行距配置对间作玉米冠层特性及产量的影响

doi:10.3864/j.issn.0578-1752.2025.23.006

摘要/Abstract

摘要：

【目的】 玉米大豆4﹕6间作模式作为黄淮海地区主推种植模式，存在间作玉米中间行行间郁闭、通风透光差、结实不良等问题。通过优化行距配置，探索改善间作玉米群体冠层结构、提高间作系统产量的有效途径，为玉米大豆带状复合种植技术在黄淮海地区的推广应用提供理论依据。【方法】 于2023—2024年，以有限生长型大豆品种菏豆22与紧凑密植型玉米品种立原296为供试材料，在玉米大豆4﹕6间作模式下，设置间作玉米等行距60 cm（ER）与宽窄行40 cm+70 cm+40 cm（WNR1）、40 cm+80 cm+40 cm（WNR2）、40 cm+90 cm+40 cm（WNR3）、40 cm+100 cm+40 cm（WNR4）5种行距配置处理，研究间作玉米行距配置对间作系统产量，间作玉米干物质积累、植株性状、冠层特性的影响。【结果】 玉米大豆4﹕6间作模式下，间作玉米宽窄行种植显著提升间作玉米产量，WNR3处理2年平均较ER增产6.68%，花后干物质积累量增加10.49%。产量提升主要源于中间行穗粒数（增加8.24%—9.95%）和千粒重（增加2.66%—3.04%）的提高；宽窄行种植缓解了中间行“避阴反应”，WNR3处理下中间行玉米株高与边行差异缩小2.3%，茎粗增加5.7%，叶片衰老延缓，抽雄后穗位叶SPAD值较ER处理提高1.95%—14.95%。随着中间行行距的增大，冠层透光率、单株叶面积呈上升趋势，WNR3处理中间行底层透光率提升29.11%，穗位层透光率提升25.44%，但在WNR3与WNR4处理间差异不显著。尽管WNR4处理的冠层通风透光条件得到进一步改善，但间作玉米群体的光能截获率显著降低，导致花后光合产物积累与籽粒产量降低。【结论】 玉米大豆4﹕6间作模式下，采用40 cm+90 cm+40 cm宽窄行配置可显著改善玉米冠层结构，增强光合性能，提高花后干物质积累与籽粒产量，是黄淮海地区优化间作系统产量的有效途径。

关键词: 玉米大豆带状复合种植, 行距配置优化, 冠层特性, 植株性状, 产量

Abstract:

【Objective】 The 4:6 maize-soybean intercropping model, widely promoted in the Huang-Huai-Hai region, has issues such as poor ventilation and light penetration, and poor grain setting in the middle rows of intercropping maize. Therefore, this study explored optimizing row spacing configurations to improve the canopy structure of intercropping maize populations and enhance the yield of intercropping systems, for providing a theoretical basis for the promotion and application of maize-soybean strip intercropping in the Huang-Huai-Hai region. 【Method】 From 2023 to 2024, soybean variety HeDou 22 and maize variety Liyuan 296 were used as test materials. Under the maize-soybean 4:6 planting pattern, five row spacing configurations were set: equal row spacing of 60 cm (ER) and narrow-wide row spacing of 40 cm+70 cm+40 cm (WNR1), 40 cm+80 cm+40 cm (WNR2), 40 cm+90 cm+40 cm (WNR3), and 40 cm+100 cm+40 cm (WNR4) to study the impacts of row spacing configurations on the yield, accumulation of dry matter, plant traits, and canopy characteristics of intercropping maize. 【Result】 Under the maize-soybean 4:6 intercropping pattern, the wide-narrow row planting of intercropping maize significantly increased its yield. The WNR3 treatment showed an average yield increase of 6.68% compared with ER over two years, with a 10.49% increase in post-anthesis dry matter accumulation. The yield improvement primarily stemmed from increased kernel number per ear (8.24%-9.95%) and 1 000-grain weight (2.66%-3.04%) in the middle rows. Compared with ER treatment, the wide-narrow row planting alleviated the "shade avoidance response" in the middle rows. Under the WNR3 treatment, the height difference between middle-row and border-row maize plants narrowed by 2.3%, stem diameter increased by 5.7%, leaf senescence was delayed, and the SPAD value of ear-leaf at the silking stage improved by 1.95%-14.95%. As the row spacing of middle rows increased, canopy light transmittance and single-plant leaf area exhibited an upward trend. The WNR3 treatment improved bottom-layer light transmittance by 29.11% and ear-layer light transmittance by 25.44% in the middle rows. However, no significant difference was observed between WNR3 and WNR4 treatments. Although the WNR4 treatment further enhanced canopy ventilation and light conditions, the light interception rate of the intercropping maize population significantly decreased, leading to reduced post-anthesis photosynthetic product accumulation and grain yield. 【Conclusion】 Under the intercropping mode of maize and soybean 4:6, the configuration of 40 cm+90 cm+40 cm wide and narrow rows could significantly improve the crown structure of maize, enhance photosynthetic performance, increase post-flower dry matter accumulation and grain yield, which was an effective way to optimize the yield of intercropping system in Huanghuaihai region.

Key words: maize-soybean strip intercropping, row spacing configuration optimization, canopy characteristics, plant traits, yield

石德杨, 高春华, 李艳红, 赵海军, 夏德君. 行距配置对间作玉米冠层特性及产量的影响[J]. 中国农业科学, 2025, 58(23): 4872-4885.

SHI DeYang, GAO ChunHua, LI YanHong, ZHAO HaiJun, XIA DeJun. Effects of Row Spacing Configuration on the Canopy Characteristics and Grain Yield of the Intercropping Maize[J]. Scientia Agricultura Sinica, 2025, 58(23): 4872-4885.

图/表 12

图1

图2

表1

表2

表3

图3

图4

图5

图6

图7

图8

图9

参考文献 34

[1]	杨文钰, 杨峰. 发展玉豆带状复合种植, 保障国家粮食安全. 中国农业科学, 2019, 52(21): 3748-3750. doi:10.3864/j.issn.0578-1752.2019.21.003.
	YANG W Y, YANG F. Developing maize-soybean strip intercropping for demand security of national food. Scientia Agricultura Sinica, 2019, 52(21): 3748-3750. doi:10.3864/j.issn.0578-1752.2019.21.003. (in Chinese)
[2]	张璟, 王若男, 吴天龙. 大豆玉米带状复合种植: 生产实效、影响因素与困难挑战—基于黄淮海地区农户样本的分析. 干旱区资源与环境, 2024, 38(7): 96-105.
	ZHANG J, WANG R N, WU T L. Production efficiency, influencing factors, and policy demands in maize-soybean strip intercropping: Case study in Huang-Huai-Hai Region. Journal of Arid Land Resources and Environment, 2024, 38(7): 96-105. (in Chinese)
[3]	卢霖, 董志强, 董学瑞, 焦浏, 李光彦, 高娇. 乙矮合剂对不同密度夏玉米花粒期叶片氮素同化与早衰的影响. 作物学报, 2015, 41(12): 1870-1879. doi: 10.3724/SP.J.1006.2015.01870
	LU L, DONG Z Q, DONG X R, JIAO L, LI G Y, GAO J. Effects of ethylene-chlormequat-potassium on leaf nitrogen assimilation after anthesis and early senescence under different planting densities. Acta Agronomica Sinica, 2015, 41(12): 1870-1879. (in Chinese) doi: 10.3724/SP.J.1006.2015.01870
[4]	张中东, 王璞, 何雪峰, 罗坤. 不同密度处理对紧凑型玉米农大486叶片生长发育的影响. 玉米科学, 2004, 12(S1): 91-93.
	ZHANG Z D, WANG P, HE X F, LUO K. Effects of different density treatments on the growth and development of leaves of compact maize nongda 486. Journal of Maize Sciences, 2004, 12(S1): 91-93. (in Chinese)
[5]	马超, 黄晓书, 李鹏坤, 卫丽. 种植密度对夏玉米果穗叶生理功能衰退的影响. 玉米科学, 2010, 18(2): 50-53.
	MA C, HUANG X S, LI P K, WEI L. Effects of planting density on physiological decline on ear leaf of summer maize. Journal of Maize Sciences, 2010, 18(2): 50-53. (in Chinese)
[6]	赵殿忱, 陈渊. 大豆宽窄行密植栽培技术试验研究. 农业系统科学与综合研究, 2000, 16(1): 45-49, 65.
	ZHAO D C, CHEN Y. Cultivation techniques with high density in wide-narrow redge of soybean. System Sciemces and Comprehensive Studies in Agriculture, 2000, 16(1): 45-49, 65. (in Chinese)
[7]	吕丽华, 陶洪斌, 夏来坤, 张雅杰, 赵明, 赵久然, 王璞. 不同种植密度下的夏玉米冠层结构及光合特性. 作物学报, 2008, 34(3): 447-455.
	LÜ L H, TAO H B, XIA L K, ZHANG Y J, ZHAO M, ZHAO J R, WANG P. Canopy structure and photosynthesis traits of summer maize under different planting densities. Acta Agronomica Sinica, 2008, 34(3): 447-455. (in Chinese) doi: 10.3724/SP.J.1006.2008.00447
[8]	白晶, 张春雨, 丁相鹏, 张吉旺, 刘鹏, 任佰朝, 赵斌. 行距配置和覆反光膜对夏玉米产量及光能利用的影响. 中国农业科学, 2020, 53(19): 3942-3953. doi:10.3864/j.issn.0578-1752.2020.19.008.
	BAI J, ZHANG C Y, DING X P, ZHANG J W, LIU P, REN B Z, ZHAO B. Effects of row spacing and mulching reflective film on the yield and light utilization of summer maize. Scientia Agricultura Sinica, 2020, 53(19): 3942-3953. doi:10.3864/j.issn.0578-1752.2020.19.008. (in Chinese)
[9]	MOHAMMADI G R, GHOBADI M E, SHEIKHEH-POOR S. Phosphate biofertilizer, row spacing and plant density effects on corn (Zea mays L.) yield and weed growth. American Journal of Plant Sciences, 2012, 3(4): 425-429. doi: 10.4236/ajps.2012.34051
[10]	丁相鹏, 白晶, 张春雨, 张吉旺, 刘鹏, 任佰朝, 赵斌. 扩行缩株对夏玉米群体冠层结构及产量的影响. 中国农业科学, 2020, 53(19): 3915-3927. doi:10.3864/j.issn.0578-1752.2020.19.006.
	DING X P, BAI J, ZHANG C Y, ZHANG J W, LIU P, REN B Z, ZHAO B. Effects of line-spacing expansion and row-spacing shrinkage on population structure and yield of summer maize. Scientia Agricultura Sinica, 2020, 53(19): 3915-3927. doi:10.3864/j.issn.0578-1752.2020.19.006. (in Chinese)
[11]	石德杨, 李艳红, 王飞飞, 夏德君, 矫岩林, 孙妮娜, 赵健. 高密度下扩行缩株对夏玉米干物质与养分积累、转运的调控效应. 中国农业科学, 2024, 57(23): 4658-4672. doi:10.3864/j.issn.0578-1752.2024.23.007.
	SHI D Y, LI Y H, WANG F F, XIA D J, JIAO Y L, SUN N N, ZHAO J. Regulation effects of line-spacing expansion and row-spacing shrinkage on dry matter and nutrient accumulation and transport of summer maize under high plant density. Scientia Agricultura Sinica, 2024, 57(23): 4658-4672. doi:10.3864/j.issn.0578-1752.2024.23.007. (in Chinese)
[12]	蒲甜, 张群, 陈国鹏, 陈诚, 曾红, 彭霄, 杨文钰, 王小春. 行距对玉米—大豆套作体系中玉米产量及干物质积累与分配的影响. 浙江农业学报, 2016, 28(8): 1277-1286.
	PU T, ZHANG Q, CHEN G P, CHEN C, ZENG H, PENG X, YANG W Y, WANG X C. Effects of row spacing on yield, dry matter accumulation and partitioning of maize in maizesoybean relay strip intercropping system. Acta Agriculturae Zhejiangensis, 2016, 28(8): 1277-1286. (in Chinese)
[13]	曹鹏鹏, 田艺心, 高凤菊, 华方静, 王乐政. 玉米-大豆间作不同带距和行距对两作物生长及产量的影响. 山东农业科学, 2018, 50(7): 78-81, 87.
	CAO P P, TIAN Y X, GAO F J, HUA F J, WANG L Z. Effects of different band and row spacing on growth and yield of intercropping maize and soybean. Shandong Agricultural Sciences, 2018, 50(7): 78-81, 87. (in Chinese)
[14]	路笃旭, 张超, 刘蔚霞, 翟吉庆, 乔健, 翟乃家, 王光明. 带叶去雄对玉米大豆复合种植体系玉米冠层光分布及产量的影响. 农业科技通讯, 2024(8): 75-79.
	LU D X, ZHANG C, LIU W X, ZHAI J Q, QIAO J, ZHAI N J, WANG G M. Effects of detasseling on light distribution in the corn canopy and yield in maize-soybean intercropping system. Bulletin of Agricultural Science and Technology, 2024(8): 75-79. (in Chinese)
[15]	刘俊峰, 李漪濛, 梁超, 周婵婵, 王术, 贾宝艳, 黄元财, 王岩, 王韵. 施氮方式与行距配置对水稻冠层结构及产量的影响. 华北农学报, 2022, 37(1): 77-85. doi: 10.7668/hbnxb.20192614
	LIU J F, LI Y M, LIANG C, ZHOU C C, WANG S, JIA B Y, HUANG Y C, WANG Y, WANG Y. Effect of nitrogen application pattern and row spacing on canopy structure and yield of rice. Acta Agriculturae Boreali-Sinica, 2022, 37(1): 77-85. (in Chinese) doi: 10.7668/hbnxb.20192614
[16]	司纪升, 孟钰, 张亚如, 王旭清, 李升东, 孟维伟, 王娜, 王洪滨, 刘开昌. 行距配置对夏玉米群体结构的影响. 山东农业科学, 2020, 52(10): 67-70.
	SI J S, MENG Y, ZHANG Y R, WANG X Q, LI S D, MENG W W, WANG N, WANG H B, LIU K C. Effects of row spacing on population structure of summer maize. Shandong Agricultural Sciences, 2020, 52(10): 67-70. (in Chinese)
[17]	李贺丽, 罗毅, 薛晓萍, 赵玉金, 赵红, 李峰. 冬小麦冠层对入射光合有效辐射吸收比例的估算方法评价. 农业工程学报, 2011, 27(4): 201-206.
	LI H L, LUO Y, XUE X P, ZHAO Y J, ZHAO H, LI F. Assessment of approaches for estimating fraction of photosynthetically active radiation absorbed by winter wheat canopy. Transactions of the Chinese Society of Agricultural Engineering, 2011, 27(4): 201-206. (in Chinese)
[18]	SORATTO R P, SOUZA-SCHLICK G D, FERNANDES A M, ZANOTTO M D, CRUSCIOL C A C. Narrow row spacing and high plant population to short height Castor genotypes in two cropping seasons. Industrial Crops and Products, 2012, 35(1): 244-249. doi: 10.1016/j.indcrop.2011.07.006
[19]	MADDONNI G Á, MARTÍNEZ-BERCOVICH J. Row spacing, landscape position, and maize grain yield. International Journal of Agronomy, 2014, 2014(1): 195012.
[20]	苌建峰, 张海红, 李鸿萍, 董朋飞, 李潮海. 不同行距配置方式对夏玉米冠层结构和群体抗性的影响. 作物学报, 2016, 42(1) : 104-112.
	CHANG J F, ZHANG H H, LI H P, DONG P F, Ll C H. Effects of different row spaces on canopy structure and resistance of summer maize. Acta Agronomica Sinica, 2016, 42(1) :104-112. (in Chinese) doi: 10.3724/SP.J.1006.2016.00104
[21]	杨吉顺, 高辉远, 刘鹏, 李耕, 董树亭, 张吉旺, 王敬锋. 种植密度和行距配置对超高产夏玉米群体光合特性的影响. 作物学报, 2010, 36(7): 1226-1233.
	YANG J S, GAO H Y, LIU P, LI G, DONG S T, ZHANG J W, WANG J F. Effects of planting density and row spacing on canopy apparent photosynthesis of high-yield summer corn. Acta Agronomica Sinica, 2010, 36(7): 1226-1233. (in Chinese) doi: 10.3724/SP.J.1006.2010.01226
[22]	朴琳, 李波, 陈喜昌, 丁在松, 张宇, 赵明, 李从锋. 优化栽培措施对春玉米密植群体冠层结构及产量形成的调控效应. 中国农业科学, 2020, 53(15): 3048-3058. doi:10.3864/j.issn.0578-1752.2020.15.006.
	PIAO L, LI B, CHEN X C, DING Z S, ZHANG Y, ZHAO M, LI C F. Regulation effects of improved cultivation measures on canopy structure and yield formation of dense spring maize population. Scientia Agricultura Sinica, 2020, 53(15): 3048-3058. doi:10.3864/j.issn.0578-1752.2020.15.006. (in Chinese)
[23]	DORDAS C A, SIOULAS C. Dry matter and nitrogen accumulation, partitioning, and retranslocation in safflower (Carthamus tinctorius L.) as affected by nitrogen fertilization. Field Crops Research, 2009, 110(1): 35-43. doi: 10.1016/j.fcr.2008.06.011
[24]	秦德志, 崔文芳, 陈静, 刘剑, 秦丽, 王利平, 赵永来, 王利鹤. 玉米大豆间作干物质积累和氮磷吸收利用的边际效应. 西南农业学报, 2024, 37(3): 552-560.
	QIN D Z, CUI W F, CHEN J, LIU J, QIN L, WANG L P, ZHAO Y L, WANG L H. Marginal effect of dry matter accumulation and nitrogen and phosphorus uptake and utilization in maize and soybean intercropping. Southwest China Journal of Agricultural Sciences, 2024, 37(3): 552-560. (in Chinese)
[25]	武晶, 陈梦, 汪直华, 杨继芝, 李燕丽, 吴雨珊, 杨文钰. 带状间作不同带间距对玉米光能利用的影响. 中国农业科学, 2023, 56(23): 4648-4659. doi:10.3864/j.issn.0578-1752.2023.23.007.
	WU J, CHEN M, WANG Z H, YANG J Z, LI Y L, WU Y S, YANG W Y. Effect of different strip distances on light energy utilization in strip intercropping maize. Scientia Agricultura Sinica, 2023, 56(23): 4648-4659. doi:10.3864/j.issn.0578-1752.2023.23.007. (in Chinese)
[26]	杨克军, 李明, 李振华. 栽培方式与群体结构对寒地玉米物质积累及产量形成的影响. 中国农学通报, 2005, 21(11): 157-160.
	YANG K J, LI M, LI Z H. Effect of cultivation way and community construction on material accumulation and yield formation of frigid corn. Chinese Agricultural Science Bulletin, 2005, 21(11): 157-160. (in Chinese)
[27]	黄智鸿, 王思远, 包岩, 梁煊赫, 孙刚, 申林, 曹洋, 吴春胜. 超高产玉米品种干物质积累与分配特点的研究. 玉米科学, 2007, 15(3): 95-98.
	HUANG Z H, WANG S Y, BAO Y, LIANG X H, SUN G, SHEN L, CAO Y, WU C S. Studies on dry matter accumulation and distributive characteristic in super high-yield maize. Journal of Maize Sciences, 2007, 15(3): 95-98. (in Chinese)
[28]	梁熠, 齐华, 王敬亚. 行距配置对春玉米群体冠层环境与光合特性的影响. 西北农业学报, 2014, 23(8): 66-72.
	LIANG Y, QI H, WANG J Y. Effects of different row spacing on ecological environment and photosynthetic characteristics of spring maize populations. Acta Agriculturae Boreali-Occidentalis Sinica, 2014, 23(8): 66-72. (in Chinese)
[29]	MADDONNI G A, OTEGUI M E, CIRILO A G. Plant population density, row spacing and hybrid effects on maize canopy architecture and light attenuation. Field Crops Research, 2001, 71(3): 183-193. doi: 10.1016/S0378-4290(01)00158-7
[30]	金容, 李钟, 杨云, 周芳, 杜伦静, 李小龙, 孔凡磊, 袁继超. 密度和株行距配置对川中丘区夏玉米群体光分布及雌雄穗分化的影响. 作物学报, 2020, 46(4): 614-630. doi: 10.3724/SP.J.1006.2020.93034
	JIN R, LI Z, YANG Y, ZHOU F, DU L J, LI X L, KONG F L, YUAN J C. Effects of density and row spacing on population light distribution and male and female spike differentiation of summer maize in hilly area of central Sichuan. Acta Agronomica Sinica, 2020, 46(4): 614-630. (in Chinese) doi: 10.3724/SP.J.1006.2020.93034
[31]	冯海娟, 张善平, 陈海宁, 李玉岭, 胡兆平. 种植密度和行距配置对高产夏玉米冠层特性及产量的影响. 安徽农业科学, 2017, 45(25): 51-54.
	FENG H J, ZHANG S P, CHEN H N, LI Y L, HU Z P. Effects of planting population and row spacing arrangements on canopy characteristics and grain yield of summer corn. Journal of Anhui Agricultural Sciences, 2017, 45(25): 51-54. (in Chinese)
[32]	冯国艺, 姚炎帝, 罗宏海, 张亚黎, 杜明伟, 张旺锋, 夏冬利, 董恒义. 新疆超高产棉花冠层光分布特征及其与群体光合生产的关系. 应用生态学报, 2012, 23(5): 1286-1294.
	FENG G Y, YAO Y D, LUO H H, ZHANG Y L, DU M W, ZHANG W F, XIA D L, DONG H Y. Canopy light distribution and its correlation with photosynthetic production in super-high yielding cotton fields of Xinjiang, Northwest China. Chinese Journal of Applied Ecology, 2012, 23(5): 1286-1294. (in Chinese)
[33]	汤亮, 朱相成, 曹梦莹, 曹卫星, 朱艳. 水稻冠层光截获、光能利用与产量的关系. 应用生态学报, 2012, 23(5): 1269-1276.
	TANG L, ZHU X C, CAO M Y, CAO W X, ZHU Y. Relationships of rice canopy PAR interception and light use efficiency to grain yield. Chinese Journal of Applied Ecology, 2012, 23(5): 1269-1276. (in Chinese)
[34]	赵海新, 杨丽敏, 陈书强, 姜树坤, 黄晓群, 单莉莉, 潘国君. 行距对两个不同类型水稻品种冠层结构与产量的影响. 中国水稻科学, 2011, 25(5): 488-494.
	ZHAO H X, YANG L M, CHEN S Q, JIANG S K, HUANG X Q, SHAN L L, PAN G J. Effects of row-spacing on canopy structure and yield in different type rice. Chinese Journal of Rice Science, 2011, 25(5): 488-494. (in Chinese)

处理 Treatment		占地比例 Crop land ratio (%)	小区面积 Plot area (m²)	种植密度 Crop density (plants/hm²)
ER	玉米 Maize	48.08	150	64102
ER	大豆Soybean	51.92	162	144230
WNR1	玉米 Maize	44.90	132	68019
WNR1	大豆Soybean	55.10	162	153061
WNR2	玉米 Maize	46.00	138	66667
WNR2	大豆Soybean	54.00	162	150000
WNR3	玉米 Maize	47.06	144	65358
WNR3	大豆Soybean	52.94	162	147058
WNR4	玉米 Maize	48.08	150	64102
WNR4	大豆Soybean	51.92	162	144230

年份 Year	处理 Treatment	产量 Grain yield (kg·hm^-2)	中间行 Middle row			边行 Border row
年份 Year	处理 Treatment	产量 Grain yield (kg·hm^-2)	穗数 Ear number (ears/hm²)	穗粒数 Grain number per ear	千粒重 1000-grain weight (g)	穗数 Ear number (ears/hm²)	穗粒数 Grain number per ear	千粒重 1000-grain weight (g)
2023	ER	8109.7d	23530.0d	380.0c	352.4d	33439.0b	409.0a	362.6a
	WNR1	8449.0c	24688.3a	382.0c	354.4c	34488.3a	408.7a	362.3a
	WNR2	8551.9b	24469.7ab	394.7b	360.5b	34174.3a	409.3a	362.5a
	WNR3	8644.0a	24105.0bc	411.3a	363.1a	34059.7a	408.7a	362.4a
	WNR4	8564.3ab	23825.7cd	410.7a	363.0a	33920.0ab	408.0a	362.2a
2024	ER	7652.5d	23629.3b	372.0c	346.0b	33696.3c	384.7a	355.8a
	WNR1	7951.2c	24745.0a	373.3c	347.7b	34751.0a	383.3a	355.8a
	WNR2	8063.1b	24613.7a	386.7b	353.6a	34308.7b	384.7a	356.0a
	WNR3	8170.9a	24120.7b	408.7a	355.1a	34059.7bc	385.3a	355.9a
	WNR4	8062.9b	23974.3b	409.0a	355.2a	33746.3c	385.7a	355.4a

年份 Year	处理 Treatment	吐丝期干物质积累量 Dry matter accumulation at silking (kg·hm^-2)	成熟期干物质积累量 Dry matter accumulation at maturity (kg·hm^-2)	吐丝后干物质积累量 Dry matter accumulation after silking (kg·hm^-2)	吐丝后干物质转运量 Transfer amount of dry matter (kg·hm^-2)	吐丝后干物质转运对籽粒的贡献率 Contribution to grain of dry matter transportation (%)
2023	ER	7498.6d	14893.0d	7394.4c	715.4a	8.81a
	WNR1	7763.2a	15560.2c	7797.0b	652.0ab	7.71ab
	WNR2	7902.2b	15804.0b	7901.9b	650.0ab	7.58ab
	WNR3	8187.4a	16305.7a	8118.3a	525.7ab	6.07b
	WNR4	7846.2bc	15927.6b	8081.4a	483.0b	5.63b
2024	ER	7461.4c	14423.1c	6961.6c	690.9a	8.97a
	WNR1	7656.8ab	15124.9b	7468.1b	483.1b	6.06b
	WNR2	7712.2a	15304.2ab	7592.0ab	471.2b	5.79b
	WNR3	7743.1a	15488.6a	7745.4a	425.5b	5.17c
	WNR4	7562.2bc	15150.8b	7588.7ab	474.2b	5.84b