秸秆覆盖与施磷对丘陵旱地小麦产量和磷素吸收利用效应的影响

doi:10.3864/j.issn.0578-1752.2021.24.003

摘要/Abstract

摘要：

【目的】冬干春旱、土壤有机质和速效磷缺乏是四川丘陵旱地冬小麦生产的主要限制因素,通过研究休闲期秸秆覆盖还田和施磷对旱地冬小麦产量和磷素吸收利用的影响,以期为四川丘陵旱地小麦高产稳产及磷素高效利用提供技术方案。【方法】试验于2018—2020年在四川仁寿进行,采用裂区设计,以秸秆覆盖（SM）和不覆盖（NSM）为主区;3个磷水平0（P0）、75 kg·hm^-2（P75）和120（P120）kg·hm^-2为副区。分析秸秆覆盖和施磷下小麦干物质积累与转运、产量性状及磷素吸收利用的差异。【结果】秸秆覆盖的增产效应高于施磷效应。2018—2019和2019—2020年度秸秆覆盖处理较不覆盖处理小麦有效穗分别增加17.7%和8.48%,穗粒数增加15.6%和11.2%,产量提高18.6%和13.5%;两年度施磷75 kg·hm^-2较不施磷处理小麦有效穗分别增加18.2%和8.79%,穗粒数增加21.1%和6.09%,产量提高30.2%和16.1%;施磷120 kg·hm^-2比不施磷处理有效穗分别增加21.2%和9.53%,穗粒数增加20.2%和4.03%,产量提高31.8%和17.9%。秸秆覆盖显著提高了小麦开花期和成熟期的干物质、磷素积累量,且均随施磷量的增加而增加;同时秸秆覆盖与施磷均可显著提高小麦花前干物质和磷素转运、花后干物质和磷素积累能力。秸秆覆盖显著提高花前干物质转运量对籽粒的贡献率,但降低了花前磷素转运量对籽粒的贡献率,而施磷显著提高了花前干物质转运量对籽粒的贡献率和花前磷素转运量对籽粒的贡献率。秋闲季秸秆覆盖还田促进了磷的吸收利用,磷肥吸收效率2年分别提高27.3%和23.7%,磷肥偏生产力提高17.8%和14.7%。【结论】秸秆覆盖更有利于促进花前干物质和磷素转运,同时促进花后磷素积累和提高磷肥吸收利用效率,通过增加有效穗和穗粒数实现增产。在本试验条件下,秸秆覆盖+75 kg·hm^-2磷肥是适用于四川丘陵旱地小麦高产高效的耕作栽培措施和磷肥管理方案。

关键词: 冬小麦, 秸秆覆盖, 施磷, 产量, 磷素吸收与利用

Abstract:

【Objective】 The main limiting factors of winter wheat production are less rainfall in winter and spring, low content of soil organic matter and serious lack of available phosphorus in hilly dryland of Sichuan province. In order to provide a technical scheme for the high and stable yield of wheat and phosphorus efficient utilization of dryland wheat in hilly region of Sichuan province, this experiment studied the effects of straw mulching in idle season and phosphorus application on dryland winter wheat yield, phosphorus absorption and utilization. 【Method】 A two-year experimental design from 2018 to 2020 in Renshou, Sichuan province was as follows: straw mulching (SM) or without straw mulching (NSM) as the main-plot treatment, and three kinds of phosphorus application of 0 (P0), 75 (P75) and 120 (P120) kg·hm^-2 as the sub-plot treatment. The differences of dry matter accumulation and transport, yield traits and phosphorus uptake and utilization of wheat were analyzed under straw mulching and phosphorus application. 【Result】 The yield increasing effect of straw mulching was higher than that of phosphorus application. In 2018-2019 and 2019-2020, compared with the non-mulched treatments, the effective spike, grain number per spike and yield of wheat in the mulched treatments were increased by 17.7% and 8.48%, 15.6% and 11.2%, 18.6% and 13.5%, respectively. Compared with no P application, the effective spike, grain number per spike and yield of wheat in 75 kg·hm^-2 P application for the two seasons of wheat increased by 18.2% and 8.79%, 21.1% and 6.09%, 30.2% and 16.1%, respectively. Similarly, compared with no P application, the effective spike, grain number per spike and yield of wheat in 120 kg·hm^-2 P application increased by 21.2% and 9.53%, 20.2% and 4.03%, 31.8% and 17.9% respectively. In addition, the straw mulching significantly increased the dry matter and phosphorus accumulation of wheat at anthesis and maturity stages, which were increased with the increase of phosphorus application. Additionally, straw mulching and phosphorus application significantly enhanced the amount of pre-anthesis dry matter and phosphate translocation, and improved the dry matter and phosphate accumulation of grain. Straw mulching also significantly increased the contribution rate of pre-anthesis dry matter transporting to grain, but did not increased the contribution rate of pre-anthesis phosphorus transport to grain. While phosphate application significantly increased the contribution rate of pre-anthesis dry matter and phosphorus transport to grain. Straw mulching before sowing promoted the absorption and utilization of phosphorus, the absorption efficiency of phosphorus fertilizer increased by 27.3% and 23.7%, respectively, and the partial productivity of phosphorus fertilizer increased by 17.8% and 14.7%, respectively. 【Conclusion】 Straw mulching was more beneficial to promote dry matter and phosphorus transport before anthesis, but also to promote phosphorus accumulation after anthesis and to improve the absorption and utilization efficiency of phosphorus fertilizer. The yield increase was achieved by increasing effective spike and grain number per spike. Overall, the straw mulching combined with 75 kg·hm^-2 phosphorus fertilizer was a high-yield and high-efficiency cultivation measure and phosphorus fertilizer management plan for wheat in hilly dryland in Sichuan.

Key words: winter wheat, straw mulching, phosphorus application, yield, phosphorus absorption and utilization

向晓玲,陈松鹤,杨洪坤,杨永恒,樊高琼. 秸秆覆盖与施磷对丘陵旱地小麦产量和磷素吸收利用效应的影响[J]. 中国农业科学, 2021, 54(24): 5194-5205.

XIANG XiaoLing,CHEN SongHe,YANG HongKun,YANG YongHeng,FAN GaoQiong. Effects of Straw Mulching and Phosphorus Application on Wheat Yield, Phosphorus Absorption and Utilization in Hilly Dryland[J]. Scientia Agricultura Sinica, 2021, 54(24): 5194-5205.

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参考文献 39

[1]	吴晓丽, 汤永禄, 李朝苏, 吴春, 黄钢. 秋季玉米秸秆覆盖对丘陵旱地小麦生理特性及水分利用效率的影响. 作物学报, 2015, 41(6):929-937. doi: 10.3724/SP.J.1006.2015.00929
	WU X L, TANG Y L, LI C S, WU C, HUANG G. Effects of autumn straw mulching on physiological characteristics and water use efficiency in winter wheat grown in hilly drought region. Acta Agronomica Sinica, 2015, 41(6):929-937. (in Chinese) doi: 10.3724/SP.J.1006.2015.00929
[2]	向晓玲, 陈松鹤, 高仁才, 吴东明, 陈艳琦, 杨洪坤, 樊高琼. 麦-玉轮作玉米秸秆还田与施氮对后茬玉米产量和养分吸收的影响. 华北农学报, 2021, 36(1):169-176.
	XIANG X L, CHEN S H, GAO R C, WU D M, CHEN Y Q, YANG H K, FAN G Q. Effects of maize straw returning nitrogen application on yield and nutrient uptake of later maize under wheat-maize rotation system. Acta Agriculturae Boreali-Sinica 2021, 36(1):169-176. (in Chinese)
[3]	张玉芳, 吴冰洁, 陈超. 四川省小麦生长季农业气候资源的时空分布特征. 西南大学学报(自然科学版), 2020, 42(4):25-37.
	ZHANG Y F, WU B J, CHEN C. Characteristics of spatial and temporal distribution of agro-climatic resources during wheat growing season in Sichuan province. Journal of Southwest University (Natural Science), 2020, 42(4):25-37. (in Chinese)
[4]	XIA L L, WANG S W, YAN X Y. Effects of long-term straw incorporation on the net global warming potential and the net economic benefit in a rice-wheat cropping system in China. Agriculture, Ecosystems and Environment, 2014, 197:118-127. doi: 10.1016/j.agee.2014.08.001
[5]	赵亚丽, 郭海斌, 薛志伟, 穆心愿, 李潮海. 耕作方式与秸秆还田对冬小麦-夏玉米轮作系统中干物质生产和水分利用效率的影响. 作物学报, 2014, 40(10):1797-1807. doi: 10.3724/SP.J.1006.2014.01797
	ZHAO Y L, GUO H B, XUE Z W, MU X Y, LI C H. Effects of tillage and straw returning on biomass and water use efficiency in a winter wheat and summer maize rotation system. Acta Agronomica Sinica, 2014, 40(10):1797-1807. (in Chinese) doi: 10.3724/SP.J.1006.2014.01797
[6]	刘冲, 贾永红, 张金汕, 孙鹏, 罗四维, 王欢, 李鹏, 石书兵. 施磷量对不同播种方式下冬小麦干物质转运及养分吸收利用的影响. 植物营养与肥料学报, 2020, 26(05):975-986.
	LIU C, JIA Y H, ZHANG J S, SUN P, LUO S W, WANG H, LI P, SHI S B. Effects phosphorus application rates on dry matter translocation and nutrient uptake and utilization of winter wheat under different seeding patterns. Journal of Plant Nutrition and Fertilizers, 2020, 26(05):975-986. (in Chinese)
[7]	惠晓丽, 王朝辉, 罗来超, 马清霞, 王森, 戴健, 靳静静. 长期施用氮磷肥对旱地冬小麦籽粒产量和锌含量的影响. 中国农业科学, 2017, 50(16):3175-3185.
	HUI X L, WANG Z H, LUO L C, MA Q X, WANH S, DAI J, JIN J J. Winter wheat grain yield and Zn concentration affected by long-term N and P application in dryland. Scientia Agricultura Sinica, 2017, 50(16):3175-3185. (in Chinese)
[8]	王昆昆, 廖世鹏, 任涛, 李小坤, 丛日环, 鲁剑巍. 连续秸秆还田对油菜水稻轮作土壤磷素有效性及作物磷素利用效率的影响. 中国农业科学, 2020, 53(1):94-104.
	WANG K K, LIAO S P, REN T, LI X K, CONG R H, LU J W. Effect of continuous straw returning on soil phosphorus availability and crop phosphorus utilization efficiency of oilseed rape-rice rotation. Scientia Agricultura Sinica, 2020, 53(1):94-104. (in Chinese)
[9]	闫湘, 金继运, 梁鸣早. 我国主要粮食作物化肥增产效应与肥料利用效率. 土壤, 2017, 49(6):1067-1077.
	YAN X, JIN J Y, LIANG M Z. Fertilizer use efficiencies and yield-increasing rates of grain crops in China. Soils, 2017, 49(6):1067-1077. (in Chinese)
[10]	丛宏斌, 姚宗路, 赵立欣, 孟海波, 王久臣, 霍丽丽, 袁艳文, 贾吉秀, 谢腾, 吴雨浓. 中国农作物秸秆资源分布及其产业体系与利用路径. 农业工程学报, 2019, 35(22):132-140.
	CONG H B, YAO Z L, ZHAO L X, MENG H B, WANG J C, HUO L L, YUAN Y W, JIA J X, XIE T, WU Y N. Distribution of crop straw resources and its industrial system and utilization path in China. Transactions of the Chinese Society of Agricultural Engineering, 2019, 35(22):132-140. (in Chinese)
[11]	YIN H J, ZHAO W Q, LI T, CHENG X Y, LIU Q. Balancing straw returning and chemical fertilizers in China: Role of straw nutrient resources. Renewable and Sustainable Energy Reviews, 2018, 81:2695-2702. doi: 10.1016/j.rser.2017.06.076
[12]	LI C S, LI J G, TANG Y L, WU X L, WU C, HUANG G, ZENG H. Stand establishment, root development and yield of winter wheat as affected by tillage and straw mulch in the water deficit hilly region of southwestern China. Journal of Integrative Agriculture, 2016, 15(7):1480-1489. doi: 10.1016/S2095-3119(15)61184-4
[13]	常磊, 韩凡香, 柴雨葳, 包正育, 程宏波, 黄彩霞, 杨德龙, 柴守玺. 秸秆带状覆盖对半干旱雨养区冬小麦耗水特征和产量的影响. 应用生态学报, 2019, 30(12):4150-4158.
	CHANG L, HAN F X, CHAI Y W, BAO Z Y, CHENG H B, HUANG C X, YANG D L, CHAI S X. Effects of bundled straw mulching on water consumption characteristics and grain yield of winter wheat in rain-fed semiarid region. Chinese Journal of Applied Ecology, 2019, 30(12):4150-4158. (in Chinese)
[14]	WEI K, BAO H X, HUANG S M, CHEN L J. Effects of long-term fertilization on available P, P composition and phosphatase activities in soil from the Huang-Huai-Hai Plain of China. Agriculture, Ecosystems and Environment, 2017, 237:134-142. doi: 10.1016/j.agee.2016.12.030
[15]	史燕捷, 金梦灿, 朱远芃, 马超, 叶新新, 郜红建. 水稻秸秆还田下磷肥减量对小麦产量及养分利用效率的影响. 中国土壤与肥料, 2020(1):75-81.
	SHI Y J, JIN M C, ZHU Y P, MA C, YE X X, GAO H J. Effects of reducing phosphorus fertilizer on wheat yield and nutrient use efficiency under rice straw return condition. Soil and Fertilizer Sciences in China, 2020(1):75-81. (in Chinese)
[16]	SHAO Y H, XIE Y X, WANG C Y, YUE J Q, YAO Y Q, LI X D, LIU W X, ZHU Y J, GUO T C. Effects of different soil conservation tillage approaches on soil nutrients, water use and wheat-maize yield in rainfed dry-land regions of North China. European Journal of Agronomy, 2016, 81:37-45. doi: 10.1016/j.eja.2016.08.014
[17]	陈轩敬, 赵亚南, 柴冠群, 张珍珍, 张跃强, 石孝均. 长期不同施肥下紫色土综合肥力演变及作物产量响应. 农业工程学报, 2016, 32(S1):139-144.
	CHEN X J, ZHAO Y N, CHAI G Q, ZHANG Z Z, ZHANG Y Q, SHI X J. Integrated soil fertility and yield response to long-term different fertilization in purple soil. Transactions of the Chinese Society of Agricultural Engineering, 2016, 32(S1):139-144. (in Chinese)
[18]	CHEN S H, GAO R C, XIANG X L, YANG H K, MA H L, ZHENG T, XIAO Y, ZHANG X, LI H, FAN G Q, YU Y. Straw mulching and nitrogen application altered ammonia oxidizers communities and improved soil quality in the alkaline purple soil of southwest China. AMB Express, 2021, 11(1):52. doi: 10.1186/s13568-021-01211-x
[19]	鲍士旦. 土壤农化分析第3版. 北京: 中国农业出版社, 2000.
	BAO S D. Soil Agrochemical Analysis 3rd Edition. Beijing: China Agriculture Press, 2000. (in Chinese)
[20]	仝锦, 孙敏, 任爱霞, 林文, 余少波, 王强, 冯玉, 任婕, 高志强. 高产小麦品种植株干物质积累运转、土壤耗水与产量的关系. 中国农业科学, 2020, 53(17):3467-3478.
	TONG J, SUN M, REN A X, LIN W, YU S B, WANG Q, FENG Y, REN J, GAO Z Q. Relationship between plant dry matter accumulation, translocation, soil water consumption and yield of high-yielding wheat cultivars. Scientia Agricultura Sinica, 2020, 53(17):3467-3478. (in Chinese)
[21]	陈玉章, 柴守玺, 程宏波, 柴雨葳, 杨长刚, 谭凯敏, 常磊. 秸秆还田结合秋覆膜对旱地冬小麦耗水特性和产量的影响. 作物学报, 2019, 45(2):256-266. doi: 10.3724/SP.J.1006.2019.71081
	CHEN Y Z, CHAI S X, CHENG H B, CHAI Y W, YANG C G, TAN K M, CHANG L. Effects of straw-incorporation combined with autumn plastic mulching on soil water consumption characteristics and winter wheat yield in arid farming areas. Acta Agronomica Sinica, 2019, 45(2):256-266. (in Chinese) doi: 10.3724/SP.J.1006.2019.71081
[22]	刘义国, 林琪, 房清龙. 旱地秸秆还田对小麦花后光合特性及产量的影响. 华北农学报, 2013, 28(4):110-114.
	LIU Y G, LIN Q, FANG Q L. Effects of dryland with straw return on photosynthetic characteristics and yield of wheat after flowering stage. Acta Agriculturae Boreali-Sinica, 2013, 28(4):110-114. (in Chinese)
[23]	马冬云, 郭天财, 王晨阳, 朱云集, 宋晓, 王永华, 岳艳军. 施氮量对冬小麦灌浆期光合产物积累、转运及分配的影响. 作物学报, 2008, 34(6):1027-1033. doi: 10.3724/SP.J.1006.2008.01027
	MA D Y, GUO T C, WANG C Y, ZHU Y J, SONG X, WANG Y H, YUE Y J. Effects of nitrogen application rates on accumulation, translocation, and partitioning of photosynthate in winter wheat at grain filling stage. Acta Agronomica Sinica, 2008, 34(6):1027-1033. (in Chinese) doi: 10.3724/SP.J.1006.2008.01027
[24]	崔正勇, 李新华, 裴艳婷, 高国强, 张凤云, 孙明柱, 李鹏. 氮磷配施对冬小麦干物质积累、分配及产量的影响. 西北农业学报, 2018, 27(3):339-346.
	CUI Z Y, LI X H, PEI Y T, GAO G Q, ZHANG F Y, SUN M Z, LI P. Effects of nitrogen-phosphorus-combined application on characteristics of dry matter accumulation, distribution and yield of winter wheat. Acta Agriculturae Boreali-Occidentalis Sinica, 2018, 27(3):339-346. (in Chinese)
[25]	田中伟, 王方瑞, 戴廷波, 蔡剑, 姜东, 曹卫星. 小麦品种改良过程中物质积累转运特性与产量的关系. 中国农业科学, 2012, 45(4):801-808.
	TIAN Z W, WANG F R, DAI T B, CAI J, JIANG D, CAO W X. Characteristics of dry matter accumulation and translocation during the wheat genetic improvement and their relationship to grain yield. Scientia Agricultura Sinica, 2012, 45(4):801-808. (in Chinese)
[26]	王健波, 严昌荣, 刘恩科, 陈保青, 张恒恒. 长期免耕覆盖对旱地冬小麦旗叶光合特性及干物质积累与转运的影响. 植物营养与肥料学报, 2015, 21(2):296-305.
	WANG J B, YAN C R, LIU E K, CHEN B Q, ZHANG H H. Effects of long-term no-tillage with straw mulch on photosynthetic characteristics of flag leaues and dry matter accumulation and translocation of winter wheat in dryland. Journal of Plant Nutrition and Fertilizer, 2015, 21(2):296-305. (in Chinese)
[27]	李廷亮, 谢英荷, 洪坚平, 冯倩, 孙丞鸿, 王志伟. 施磷水平对晋南旱地冬小麦产量及磷素利用的影响. 中国生态农业学报, 2013, 21(6):658-665. doi: 10.3724/SP.J.1011.2013.00658
	LI T L, XIE Y H, HONG J P, FENG Q, SUN C H, WANG Z W. Effects of phosphorus application rates on winter wheat yield and phosphorus use efficiency in drylands of south Shanxi province. Chinese Journal of Eco-Agriculture, 2013, 21(6):658-665. (in Chinese) doi: 10.3724/SP.J.1011.2013.00658
[28]	庞党伟, 陈金, 唐玉海, 尹燕枰, 杨东清, 崔正勇, 郑孟静, 李勇, 王振林. 玉米秸秆还田方式和氮肥处理对土壤理化性质及冬小麦产量的影响. 作物学报, 2016, 42(11):1689-1699. doi: 10.3724/SP.J.1006.2016.01689
	PANG D W, CHEN J, TANG Y H, YIN Y P, YANG D Q, CUI Z W, ZHENG M J, LI Y, WANG Z L. Effect of returning methods of maize straw and nitrogen treatments on soil physicochemical property and yield of winter wheat. Acta Agronomica Sinica, 2016, 42(11):1689-1699. (in Chinese) doi: 10.3724/SP.J.1006.2016.01689
[29]	陈金, 唐玉海, 尹燕枰, 庞党伟, 崔正勇, 郑孟静, 彭佃亮, 杨卫兵, 杨东清, 李艳霞, 王振林, 李勇. 秸秆还田条件下适量施氮对冬小麦氮素利用及产量的影响. 作物学报, 2015, 41(1):160-167. doi: 10.3724/SP.J.1006.2015.00160
	CHEN J, TANG Y H, YIN Y P, PANG D W, CUI Z Y, ZHENG M J, PENG D L, YANG W B, YANG D Q, LI Y X, WANG Z L, LI Y. Effects of straw returning plus nitrogen fertilizer on nitrogen utilization and grain yield in winter wheat. Acta Agronomica Sinica, 2015, 41(1):160-167. (in Chinese) doi: 10.3724/SP.J.1006.2015.00160
[30]	胡雨彤, 郝明德, 付威, 赵晶, 王哲. 不同降水年型和施磷水平对小麦产量的效应. 中国农业科学, 2017, 50(2):299-309.
	HU Y T, HAO M D, FU W, ZHAO J, WANG Z. Effect of precipitation patterns and different phosphorus nutrition levels on winter wheat yield. Scientia Agricultura Sinica, 2017, 50(2):299-309. (in Chinese)
[31]	王文翔, 孙敏, 林文, 任爱霞, 薛建福, 余少波, 张蓉蓉, 高志强. 不同降雨年型磷肥对旱地小麦根系特征、磷素吸收利用和产量的影响. 应用生态学报, 2021, 32(3):895-905.
	WANG W X, SUN M, LIN W, REN A X, XUE J F, YU S B, ZHANG R R, GAO Z Q. Effects of phosphorus fertilizer on root characteristics, uptake utilization of phosphorus and yield of dryland wheat with contrasting yearly rainfall pattern. Chinese Journal of Applied Ecology, 2021, 32(3):895-905. (in Chinese)
[32]	ZHOU Z J, ZENG X Z, CHEN K, LI Z, GUO S, SHUANGGUAN Y X, YU H, TU S H, QIN Y S. Long-term straw mulch effects on crop yields and soil organic carbon fractions at different depths under a no-till system on the Chengdu Plain, China. Journal of Soils and Sediments, 2019, 19(5):2143-2152. doi: 10.1007/s11368-018-02234-x
[33]	刘盼盼, 周毅, 付光玺, 高祥, 张平, 张磊, 汪建飞. 基于秸秆还田的小麦-玉米轮作体系施肥效应及其对土壤磷素有效性的影响. 南京农业大学学报, 2014, 37(5):27-33.
	LIU P P, ZHOU Y, FU G X, GAO X, ZHANG P, ZHANG L, WANG J F. Effects of fertilization on crop yield and soil phosphorus availability based on the returning straw. Journal of Nanjing Agricultural University, 2014, 37(5):27-33. (in Chinese)
[34]	YANG Y H, DING J L, ZHANG Y H, WU J C, ZHANG J M, PAN X Y, GAO C M, WANG Y, HE F. Effects of tillage and mulching measures on soil moisture and temperature, photosynthetic characteristics and yield of winter wheat. Agricultural Water Management, 2018, 201:299-308. doi: 10.1016/j.agwat.2017.11.003
[35]	刘彦伶, 李渝, 白怡婧, 黄兴成, 张雅蓉, 张萌, 张文安, 蒋太明. 长期不同施肥对水稻干物质和磷素积累与转运的影响. 植物营养与肥料学报, 2019, 25(7):1146-1156.
	LIU Y L, LI Y, BAI Y J, HUANG X C, ZHANG Y R, ZHANG M, ZHANG W A, JIANG T M. Effect of long-term fertilization patterns on dry matter and phosphorus accumulation and translocation in rice. Journal of Plant Nutrition and Fertilizers, 2019, 25(7):1146-1156. (in Chinese)
[36]	董昭芸. 沟垄集雨种植模式下施肥与补灌对冬小麦生长及水肥利用效率的影响[D]. 杨凌: 西北农林科技大学, 2020.
	DONG Z Y. Effects of fertilization and supplemental irrigation on winter wheat growth and water and fertilizer use efficiency under furrow and ridge rain harvesting planting mode[D]. Yangling: Northwest Agriculture and forestry University, 2020. (in Chinese)
[37]	LI H, HUANG G, MENG Q, MA L, YUAN L, WANG F, ZHANG W, CUI Z, SHEN J, CHEN X, JIANG R, ZHANG F. Integrated soil and plant phosphorus management for crop and environment in China. A review. Plant and Soil, 2011, 349(1/2):157-167.
[38]	吕盛, 王子芳, 高明, 黄容, 田冬. 秸秆不同还田方式对紫色土微生物量碳、氮、磷及可溶性有机质的影响. 水土保持学报, 2017, 31(5):266-272.
	LÜ S, WANG Z F, GAO M, HUANG R, TIAN D. Effects of different straw returning methods on soil microbial biomass carbon, nitrogen, phosphorus and soluble organic matter in purple soil. Journal of Soil and Water Conservation, 2017, 31(5):266-272. (in Chinese)
[39]	XU Y H, CHEN Z M, FONTAINE S, WANG W J, LUO J F, FAN J L, DING W X. Dominant effects of organic carbon chemistry on decomposition dynamics of crop residues in a Mollisol. Soil Biology and Biochemistry, 2017, 115:221-232. doi: 10.1016/j.soilbio.2017.08.029

年份 Year	pH	有机质 Organic matter (g·kg^-1)	全氮 Total N (g·kg^-1)	碱解氮 Available N (mg·kg^-1)	速效磷 Available P (mg·kg^-1)	速效钾 Available K (mg·kg^-1)
2018—2019	7.94	15.5	0.86	62.3	5.09	151
2019—2020	7.83	19.9	0.93	62.6	5.20	160

年份 Year	处理 Treatment		结实小穗 Effective small spikes	不实小穗 Invalid small spikes	有效穗 Effective spike (×10⁴ hm^-2)	穗粒数 Grain number per spike	千粒重 Thousand-grain weight (g)	实际产量 Actual yield (kg·hm^-2)
2018—2019	NSM	P0	13.5±0.27b	1.87±0.07c	272±10c	36.7±0.38b	47.2±0.83a	5071±134b
		P75	14.4±0.47a	2.07±0.09b	319±6b	44.6±2.38a	46.5±1.04a	6706±116a
		P120	14.2±0.37ab	2.34±0.13a	329±10a	44.2±1.58a	46.5±0.61a	6634±140a
	均值Mean		14.0	2.09	307	41.8	46.7	6137
	SM	P0	16.4±0.06a	1.81±0.04a	319±6b	42.6±1.25b	46.1±0.54a	6046±84b
		P75	16.7±0.82a	1.83±0.06a	379±5a	51.4±0.96a	45.8±0.80a	7773±127a
		P120	16.6±0.48a	1.88±0.08a	386±5a	51.1±0.42a	45.6±1.14a	8020±289a
	均值Mean		16.6	1.84	361	48.4	45.8	7280
	F值 F-value	M	322.04**	24.7*	104.44**	1051.71**	2.21ns	2121.44**
		P	2.11ns	30.8**	197.65**	51.58**	1.11ns	160.32**
		M×P	0.51ns	17.3**	2.03ns	0.13ns	0.07ns	1.88ns
2019—2020	NSM	P0	13.9±0.22b	2.79±0.19b	311±15c	40.3±0.10b	53.8±0.15a	6285±290b
		P75	14.7±0.38a	2.89±0.25ab	360±3a	40.4±0.89b	53.3±0.72a	7196±240a
		P120	14.8±0.44a	3.09±0.12a	333±4b	42.3±0.33a	54.3±0.22a	7037±184a
	均值Mean		14.5	2.92	335	41.0	53.8	6839
	SM	P0	15.3±0.17b	2.76±0.02a	347±8b	43.5±0.11c	52.1±2.27a	6836±333b
		P75	15.9±0.44a	2.80±0.03a	355±2b	48.5±0.55a	53.7±0.38a	8032±334a
		P120	15.4±0.09ab	2.84±0.25a	387±11a	44.9±0.82b	54.6±0.45a	8429±214a
	均值Mean		15.56	2.80	363	45.6	53.5	7766
	F值 F-value	M	23.9*	44.6*	128.09**	149.83**	1.47ns	59.02**
		P	9.66**	2.19ns	25.85**	34.36**	2.81ns	31.43**
		M×P	3.58ns	0.69ns	19.05**	46.90**	1.77ns	3.45ns

年份 Year	处理 Treatment		花前积累的干物质DMABA			花后积累的干物质DMAAA
年份 Year	处理 Treatment		转运量 TA (kg·hm^-2)	转运率 TR (%)	对籽粒的贡献率 CG (%)	花后积累量 AA (kg·hm^-2)	对籽粒的贡献率 CG (%)
2018—2019	NSM	P0	2834±65c	26.8±0.10b	46.5±0.14c	3261±85b	53.5±0.14a
		P75	3449±74b	28.2±0.37a	47.6±0.47b	3798±94a	52.4±0.47a
		P120	3636±66a	28.3±0.73a	48.9±1.36a	3801±175a	51.1±1.36b
	均值Mean		3306	27.8	47.7	3620	52.3
	SM	P0	3537±20c	27.4±0.44b	47.4±0.67b	3929±90b	52.6±0.67a
		P75	4316±195b	30.3±0.71a	50.7±1.33a	4190±97a	49.3±1.33b
		P120	4636±148a	30.7±0.14a	51.7±0.41a	4331±73a	48.3±0.41b
	均值Mean		4163	29.5	49.9	4150	50.1
	F值 F-value	M	254.54**	117.90**	112.94**	352.23**	113.80**
		P	110.56**	57.32**	29.63**	36.40**	29.60**
		M×P	2.51ns	7.60*	3.71ns	2.71ns	3.70ns
2019—2020	NSM	P0	2083±79c	19.5±0.35c	29.7±0.58b	4929±61c	70.3±0.58a
		P75	2663±29b	21.8±0.09b	34.3±0.20a	5105±91b	65.7±0.20b
		P120	2896±39a	23.1±0.43a	35.1±0.13a	5352±76a	64.9±0.13b
	均值Mean		2547	21.5	33.0	5129	67.0
	SM	P0	2703±75c	22.6±0.48b	34.1±0.22c	5228±113b	65.9±0.22a
		P75	3560±132b	25.5±1.39a	40.0±1.05b	5390±96a	60.0±1.05b
		P120	3936±134a	26.8±0.70a	42.1±1.10a	5411±102a	57.9±1.10c
	均值Mean		3413	25.0	38.7	5343	61.3
	F值 F-value	M	1543.94**	165.52**	624.84**	218.89**	613.27**
		P	167.61**	44.80**	136.52**	22.60**	136.73**
		M×P	7.21*	0.29ns	4.67*	4.42ns	4.69*

年份 Year	处理 Treatment		花前积累的磷素PABA			花后积累的磷素PAAA
年份 Year	处理 Treatment		转运量 TA (kg·hm^-2)	转运率 TR (%)	对籽粒的贡献率 CG (%)	花后积累量 AA (kg·hm^-2)	对籽粒的贡献率 CG (%)
2018—2019	NSM	P0	11.79±0.47c	84.43±0.50b	76.91±0.31b	3.54±0.20a	23.1±0.31a
		P75	15.77±0.43b	85.45±0.27a	81.32±0.98a	3.62±0.17a	18.7±0.98b
		P120	17.62±0.13a	84.38±0.23b	80.98±0.66a	4.14±0.18a	19.02±0.66b
	均值Mean		15.06	84.75	79.74	3.77	20.26
	SM	P0	14.14±0.20c	82.23±0.60c	71.92±1.51b	5.52±0.36b	28.1±1.51a
		P75	18.02±0.59b	83.37±0.21b	73.56±1.08b	6.49±0.55a	26.4±1.08a
		P120	21.47±0.51a	84.33±0.10a	77.07±0.82a	6.39±0.44a	22.9±0.82b
	均值Mean		17.87	83.31	74.18	6.13	25.8
	F值 F-value	M	564.57**	707.40**	166.57**	629.26**	166.55**
		P	283.37**	23.37**	27.58**	5.22*	27.60**
		M×P	5.19*	23.13**	4.94*	1.85ns	4.95*
2019—2020	NSM	P0	13.31±0.74c	89.34±0.47b	86.87±1.27b	2.01±0.13b	13.1±1.27a
		P75	17.60±0.55b	90.55±0.31a	89.25±0.63a	2.12±0.10b	10.8±0.63b
		P120	19.01±0.58a	90.98±0.10a	88.23±1.40a	2.53±0.26a	11.8±1.40ab
	均值Mean		16.64	90.29	88.11	2.22	11.9
	SM	P0	14.65±0.51c	86.60±0.43b	79.02±0.93b	3.89±0.08b	21.0±0.93a
		P75	19.54±0.50b	87.10±0.53ab	81.64±1.37a	4.39±0.31a	18.4±1.37b
		P120	21.20±0.35a	87.57±0.23a	82.58±0.56a	4.47±0.14a	17.4±0.56b
	均值Mean		18.47	87.09	81.08	4.25	18.9
	F值 F-value	M	141.86**	167.07*	2567.86**	9783.88**	2793.79**
		P	518.02**	20.22**	15.40**	13.23**	15.37**
		M×P	2.43ns	1.72ns	2.71ns	1.94ns	2.69ns

指标 Index	相关系数 Correlation coefficient	直接通径系数 Direct path coefficient	间接通径系数 Indirect path coefficient
指标 Index	相关系数 Correlation coefficient	直接通径系数 Direct path coefficient	干物质积累量 DMA	磷素养分积累量 PA	结实小穗 ESS	不实小穗 ISS	有效穗 ES	穗粒数 GNPS	千粒重 TGW
干物质积累量DMA	0.89**	0.865	—	-0.364	0.034	-0.015	0.290	0.096	-0.019
磷素养分积累量PA	0.76**	-0.444	0.710	—	0.032	-0.002	0.304	0.150	0.009
结实小穗ESS	0.78**	0.040	0.735	-0.350	—	-0.019	0.282	0.106	-0.013
不实小穗 ISS	0.04	0.089	-0.149	0.007	-0.009	—	0.048	0.041	0.011
有效穗ES	0.85**	0.381	0.659	-0.354	0.030	0.011	—	0.131	-0.004
穗粒数 GNPS	0.59**	0.199	0.418	-0.334	0.022	0.018	0.251	—	0.018
千粒重 TGW	0.31	-0.049	0.332	0.078	0.010	-0.020	0.032	-0.074	—