错株增密种植对夏玉米光合特性及产量的影响

doi:10.3864/j.issn.0578-1752.2020.19.007

Abstract

Abstract:

【Objective】Increasing density is one of the important ways to increase the yield of maize, but with the increase of planting density, it will usually cause the colony closure and the decrease of the utilization rate of light energy. Therefore, it is very important to explore and change the planting mode to weaken the negative effects of excessive density on plants and to improve the group canopy structure.【Method】The experiment was conducted in 2018 and 2019. Using Denghai 605 and Zhengdan 958 as test materials, two planting modes of parallel planting and staggered planting were set up under the two density conditions of 67 500 plants/hm² and 82 500 plants/hm². The effects of density on summer maize yield and photosynthetic characteristics were expected to explore and to understand the interaction mechanism of staggered planting and density, and to propose a suitable planting model for high-yield summer maize, which provided a certain theoretical basis for the scientific planting model of summer maize.【Result】Increased density reduced the uniformity of the population. The ear leaf net photosynthetic rate (Pn), photosynthetic key enzyme activities, and chlorophyll content were lower than those of low density, and the photosynthetic key enzyme activities decreased more with the growth period under high density. This meant that increasing the density would increase the leaf senescence rate, which was not conducive to plant photosynthesis. Under the staggered planting model, the group uniformity was improved, the angle between stems and leaves was increased, the leaves were more flat, the light energy interception rate was increased, the activity of Pn, photosynthetic key enzymes and chlorophyll content increased, the accumulation of dry matter in the population and the distribution of dry matter to the grain increased, thereby significantly increasing the yield. Staggered planting increased the average yield by 3.8%-6.1% compared to planting of the parallel plant. Staggered planting under the premise of ensuring the number of groups weakened the competition between individual plants within the group for light and temperature resources, ensured the full development of the individual development potential of maize, and enabled the coordinated development of maize groups and individuals.【Conclusion】Staggered planting could significantly improve the group canopy structure, optimize the group’s lighting conditions, enhance its photosynthetic performance and material production capacity, and increase maize yield. Under the conditions of this experiment, comprehensive analysis believed that the stagger planting model under 82 500 plants/hm² density conditions performs was the best, which could provide a reference for the establishment of a high-yield model of summer maize.

Key words: summer maize, stagger planting, density, photosynthetic characteristics, grain yield

ZHANG ChunYu,BAI Jing,DING XiangPeng,ZHANG JiWang,LIU Peng,REN BaiZhao,ZHAO Bin. Effects of Staggered Planting with Increased Density on the Photosynthetic Characteristics and Yield of Summer Maize[J].Scientia Agricultura Sinica, 2020, 53(19): 3928-3941.

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References 34

[1]	陈国平, 高聚林, 赵明, 董树亭, 李少昆, 杨祁峰, 刘永红, 王立春, 薛吉全, 柳京国, 李潮海, 王永宏, 王友德, 宋慧欣, 赵久然. 近年我国玉米超高产田的分布、产量构成及关键技术. 作物学报, 2012, 38(1): 80-85. doi: 10.3724/SP.J.1006.2012.00080
	CHEN G P, GAO J L, ZHAO M, DONG S T, LI S K, YANG Q F, LIU Y H, WANG L C, XUE J Q, LIU J G, LI C H, WANG Y H, WANG Y D, SONG H X, ZHAO J R. Distribution, yield structure, and key cultural techniques of maize super-high yield plots in recent years. Acta Agronomica Sinica, 2012, 38(1): 80-85. (in Chinese) doi: 10.3724/SP.J.1006.2012.00080
[2]	李猛, 陈现平, 张建, 朱德慧, 程备久. 不同密度与行距配置对紧凑型玉米产量效应的研究. 中国农学通报, 2009, 25(8): 132-136.
	LI M, CHEN X P, ZHANG J, ZHU D H, CHENG B J. Study on the yield of erectophile type maize under the different density and the row spacing. Chinese Agricultural Science Bulletin, 2009, 25(8): 132-136. (in Chinese)
[3]	杨利华, 张丽华, 张全国, 姚艳荣, 贾秀领, 马瑞崑. 种植样式对高密度夏玉米产量和株高整齐度的影响. 玉米科学, 2006, 14(6): 122-124.
	YANG L H, ZHANG L H, ZHANG Q G, YAO Y R, JIA X L, MA R K. Effect of row spacing pattern on yield and plant height uniformity in highly-densed summer maize. Journal of Maize Sciences, 2006, 14(6): 122-124. (in Chinese)
[4]	范厚明, 余莉, 余慧明. 不同种植方式对玉米生长发育及产量的影响. 贵州农业科学, 2003, 31(4): 25-26.
	FAN H M, YU L, YU H M. Effect of different planting methods on growth and yield of maize. Guizhou Agricultural Sciences, 2003, 31(4): 25-26. (in Chinese)
[5]	董树亭, 胡昌浩, 岳寿松, 王群瑛, 高荣岐, 潘子龙. 夏玉米群体光合速率特性及其与冠层结构、生态条件的关系. 植物生态学与地植物学学报, 1992, 16(4): 372-378.
	DONG S T, HU C H, YUE S S, WANG Q Y, GAO R Q, PAN Z L. The characteristics of canopy photosynthesis of summer corn (Zea Mays) and its relation with canopy structure and ecological conditions. Acta Phytoecologica et Geobotanica Sinica, 1992, 16(4): 372-378. (in Chinese)
[6]	陆雪珍, 沈雪芳, 沈才标, 徐晓梅, 张文献. 不同种植密度下糯玉米产量及相关性状研究. 上海农业学报, 2008, 24(2): 61-64.
	LU X Z, SHEN X F, SHEN C B, XU X M, ZHANG W X. Study on yields and correlated characters of waxy corn under different planting densities. Acta Agriculturae Shanghai, 2008, 24(2): 61-64. (in Chinese)
[7]	王美云, 李少昆, 赵明. 关于玉米光合作用与叶片水分利用效率关系的研究. 作物学报, 1997, 23(3): 345-352.
	WANG M Y, LI S K, ZHAO M. Relationship between water use efficiency and leaf photosynthesis of maize. Acta Agronomica Sinica, 1997, 23(3): 345-352. (in Chinese)
[8]	王敬亚, 齐华, 梁熠, 王晓波, 吴亚男, 白向历, 刘明, 孟显华, 许晶. 种植方式对春玉米光合特性、干物质积累及产量的影响. 玉米科学, 2009, 17(5): 113-115, 120.
	WANG J Y, QI H, LIANG Y, WANG X B, WU Y N, BAI X L, LIU M, MENG X H, XU J. Effects of different planting patterns on the photosynthesis capacity, dry matter accumulation and yield of spring maize. Journal of Maize Sciences, 2009, 17(5): 113-115, 120. (in Chinese)
[9]	胡昌浩, 董树亭, 岳松涛, 王群瑛, 高荣岐, 潘子龙. 高产夏玉米群体光合速率与产量关系的研究. 作物学报, 1993, 19(1): 63-69.
	HU C H, DONG S T, YUE S T, WANG Q Y, GAO R Q, PAN Z L. Studies on the relationship between canopy apparent photosynthesis rate and grain yield in high yielding summer corn. Acta Agronomica Sinica, 1993, 19(1): 63-69. (in Chinese)
[10]	李登海, 张永慧, 杨今胜, 柳京国. 育种与栽培相结合紧凑型玉米创高产. 玉米科学, 2004, 12(1): 69-71.
	LI D H, ZHANG Y H, YANG J S, LIU J G. Combining breeding and cultivation, compact corn creates high yield. Journal of Maize Sciences, 2004, 12(1): 69-71. (in Chinese)
[11]	张倩, 张洪生, 宋希云, 姜雯. 种植方式和密度对夏玉米光合特征及产量的影响. 生态学报, 2015, 35(4): 1235-1241. doi: 10.5846/stxb201305020885
	ZHANG Q, ZHANG H S, SONG X Y, JIANG W. The effects of planting patterns and densities on photosynthetic characteristics and yield in summer maize. Acta Ecologica Sinica, 2015, 35(4): 1235-1241. (in Chinese) doi: 10.5846/stxb201305020885
[12]	郝兰春, 谭秀山, 毕建杰. 玉米产量与种植密度的相关性研究. 河北农业科学, 2009, 13(5): 9-10.
	HAO L C, TAN X S, BI J J. Research on the relationship between yield and planting density of maize. Journal of Hebei Agricultural Sciences, 2009, 13(5): 9-10. (in Chinese)
[13]	张永科, 王立祥. 玉米蜂巢式高产栽培技术研究应用. 干旱地区农业研究, 2009, 27(5): 59-64.
	ZHANG Y K, WANG L X. The research and utilization of maize cellular planting technique. Agricultural Research in the Arid Areas, 2009, 27(5): 59-64. (in Chinese)
[14]	段巍巍, 李慧玲, 肖凯, 李雁鸣. 密度对玉米光合生理特性和产量的影响. 玉米科学, 2007, 15(2): 98-101.
	DUAN W W, LI H L, XIAO K, LI Y M. Effects of density on photosynthetic physiological characteristics and yield of maize. Journal of Maize Sciences, 2007, 15(2): 98-101. (in Chinese)
[15]	吕丽华, 王璞, 鲁来清. 不同冠层结构下夏玉米产量形成的源库关系. 玉米科学, 2008, 16(4): 66-71.
	LÜ L H, WANG P, LU L Q. The relationship of source-sink for yield form in summer maize under different canopy structure. Journal of Maize Sciences, 2008, 16(4): 66-71. (in Chinese)
[16]	BOWERS G R, RABB J L, ASHLOCK L O. Row spacing in the early soybean production system. Agronomy Journal, 2000, 92: 524-531. doi: 10.2134/agronj2000.923524x
[17]	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: 183-193. doi: 10.1016/S0378-4290(01)00158-7
[18]	吴霞, 隋鹏, 高旺盛, 闫鹏, 袁淑芬, 孔德超, 陶志强, 陈源泉. 种植方式对华北春玉米冠层结构与光合特性的影响. 玉米科学, 2014, 22(6): 91-96.
	WU X, SUI P, GAO W S, YAN P, YUAN S F, KONG D C, TAO Z Q, CHEN Y Q. Canopy structure and photosynthesis traits of spring maize in response to planting geometries in North China plain. Journal of Maize Sciences, 2014, 22(6): 91-96. (in Chinese)
[19]	李艳华, 张鹏, 吴国良, 李金玲, 毕建杰, 刘建栋. “双行交错”种植方式玉米干物质积累动态变化的研究. 山东农业科学, 2011(6): 35-38.
	LI Y H, ZHANG P, WU G L, LI J L, BI J J, LIU J D. Research on dynamic variation of dry matter accumulation in maize cultivated by “double-row interlaced planting” method. Shandong Agricultural Sciences, 2011(6): 35-38. (in Chinese)
[20]	卫丽, 熊友才, 马超, 张慧琴, 邵阳, 李朴芳, 程正国, 王同朝. 不同群体结构夏玉米灌浆期光合特征和产量变化. 生态学报, 2011, 31(9): 2524-2531.
	WEI L, XIONG Y C, MA C, ZHANG H Q, SHAO Y, LI P F, CHENG Z G, WANG T Z. Photosyntheticcharacterization and yield of summer corn (Zea mays L.) during grain filling stage under different planting pattern and population densities. Acta Ecologica Sinica, 2011, 31(9): 2524-2531. (in Chinese)
[21]	张中东, 王璞, 何雪峰, 张红梅. 不同密度对农大486群体结构的影响. 耕作与栽培, 2004(2): 19-20, 45.
	ZHANG Z D, WANG P, HE X F, ZHANG H M. Effect of different density on the group structure of Nongda 486. Tillage and Cultivation, 2004(2): 19-20, 45. (in Chinese)
[22]	张宪政. 植物叶绿素含量测定—丙酮乙醇混合液法. 辽宁农业科学, 1986(3): 26-28.
	ZHANG X Z. Determination of plant chlorophyll content-acetone- thanol mixture method. Liaoning Agricultural Sciences, 1986(3): 26-28. (in Chinese)
[23]	刘伟, 张吉旺, 吕鹏, 杨今胜, 刘鹏, 董树亭, 李登海, 孙庆泉. 种植密度对高产夏玉米登海661产量及干物质积累与分配的影响. 作物学报, 2011, 37(7): 1301-1307. doi: 10.3724/SP.J.1006.2011.01301
	LIU W, ZHANG J W, LÜ P, YANG J S, LIU P, DONG S T, LI D H, SUN Q Q. Effect of plant density on grain yield dry matter accumulation and partitioning in summer maize cultivar Denghai 661. Acta Agronomica Sinica, 2011, 37(7): 1301-1307. (in Chinese) doi: 10.3724/SP.J.1006.2011.01301
[24]	陈传永, 侯玉虹, 孙锐, 朱平, 董志强, 赵明. 密植对不同玉米品种产量性能的影响及其耐密性分析. 作物学报, 2010, 36(7): 1153-1160. doi: 10.3724/SP.J.1006.2010.01153
	CHEN C Y, HOU Y H, SUN R, ZHU P, DONG Z Q, ZHAO M. Effects of planting density on yield performance and density-tolerance analysis for maize hybrids. Acta Agronomica Sinica, 2010, 36(7): 1153-1160. (in Chinese) doi: 10.3724/SP.J.1006.2010.01153
[25]	宋雪, 宋碧, 钱晓刚. 玉米群体整齐度对产量的影响. 贵州农业科学, 2011, 39(5): 49-51.
	SONG X, SONG B, QIAN X G. Effect of uniformity on yield of maize. Guizhou Agricultural Sciences, 2011, 39(5): 49-51. (in Chinese)
[26]	吴雪梅. 不同种植方式对夏玉米群体光、水利用及生长发育的影响[D]. 北京: 中国农业大学, 2012.
	WU X M. Influence of planting pattern on the light and water utilization, growth development, and grain yield of summer maize[D]. Beijing: China Agricultural University, 2012. (in Chinese)
[27]	程绍义, 于翠芳, 刘绍棣. 紧凑型玉米株型及生理特性研究. 华北农学报, 1990(3): 20-27. doi: 10.3321/j.issn:1000-7091.1990.03.004
	CHENG S Y, YU C F, LIU S D. Studies on the shape and the physiological characteristics of compact-type maize. Acta Agriculturae Boreali-Sinica, 1990(3): 20-27. (in Chinese) doi: 10.3321/j.issn:1000-7091.1990.03.004
[28]	BERZONSKY W A, HAWK J A. Agronomic features of two maize synthetics selected for high and low stalk-crushing strength. Crop Science, 1986, 26(5): 871-875. doi: 10.2135/cropsci1986.0011183X002600050007x
[29]	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. doi: 10.3724/SP.J.1006.2008.00447
	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
[30]	王向阳, 白金顺, 志水胜好, 曹卫东. 施肥对不同种植模式下春玉米光合特性的影响. 作物杂志, 2012(5): 39-43.
	WANG X Y, BAI J S, ZHI S S H, CAO W D. Effects of fertilization on photosynthetic characteristics of spring maize in different planting patterns. Crops, 2012(5): 39-43. (in Chinese)
[31]	刘铁东. 不同种植方式对玉米光截获及光合特性的影响[D]. 北京:中国科学院, 2012.
	LIU T D. Light interception and photosynthesis of tow cultivars maize response to three planting patterns[D]. Beijing: Chinese Academy of Sciences, 2012. (in Chinese)
[32]	王静静, 贺洪军, 张自坤, 戴忠民, 谭月强, 常培培. 宽行窄幅错位密播种植方式对夏玉米光合特性及产量的影响. 玉米科学, 2017, 25(3): 65-72, 79.
	WANG J J, HE H J, ZHANG Z K, DAI Z M, TAN Y Q, CHANG P P. Effects of wide-narrow row interlaced thick-planting pattern on photosynthetic characteristic and yield in summer maize. Journal of Maize Sciences, 2017, 25(3): 65-72, 79. (in Chinese)
[33]	张玉斌, 曹庆军, 张铭, 崔金虎. 施磷水平对春玉米叶绿素荧光特性及品质的影响. 玉米科学, 2009, 17(4): 79-81.
	ZHANG Y B, CAO Q J, ZHANG M, CUI J H. Effects of phosphorus application on chlorophyll fluorescence characteristic and quality of spring maize. Journal of Maize Sciences, 2009, 17(4): 79-81. (in Chinese)
[34]	姚万山, 宋连启, 郭宏敏, 张慎璞. 夏玉米高产群体形态质量指标的研究. 玉米科学, 2004, 12(S2): 14-16.
	YAO W S, SONG L Q, GUO H M, ZHANG S P. Study on the morphological indexes of high-yield population in summer maize. Journal of Maize Sciences, 2004, 12(S2): 14-16. (in Chinese)

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年份 Year	试验地点 Test location	有机质 Organic matter (g·kg^-1)	全氮 Total N (g·kg^-1)	速效氮 Available N (mg·kg^-1)	速效磷 Available P (mg·kg^-1)	速效钾 Available K (mg·kg^-1)
2018	泰安市马庄镇试验基地 Test base in Mazhuang town, Tai'an city	11.20	0.71	56.43	28.32	109.01
2019	黄淮海区域玉米技术创新中心 Huang-huai-hai regional maize technology innovation center	10.38	0.78	57.11	36.51	126.87

年份 Year	品种 Maize variety	密度 Density	种植模式 Planting pattern	收获穗数 Harvested ear number (ears/hm²)	穗粒数 Number of kernels per ear	千粒重 Thousand kernel weight (g)	籽粒产量 Yield (kg·hm^-2)
2018	DH605	LD	P	65558.8b	447.2a	330.8a	9245.2c
		LD	S	66670.0b	467.9a	334.9a	10094.8c
		HD	P	82226.3a	403.3b	312.8b	11036.5b
		HD	S	81115.2a	408.3b	335.8a	11916.1a
	ZD958	LD	P	66670.0b	494.7a	316.1ab	11005.6c
		LD	S	67781.2b	484.2a	320.6a	11626.4b
		HD	P	78892.8a	461.4ab	312.0b	11459.8b
		HD	S	82226.3a	450.9b	322.4a	11801.0a
2019	DH605	LD	P	66670.0b	515.7b	330.8ab	11213.5c
		LD	S	65558.8b	535.9a	336.0a	11229.6c
		HD	P	81115.2a	486.0c	321.6b	11630.0b
		HD	S	83337.5a	519.1b	331.8a	12190.9a
	ZD958	LD	P	65558.8b	533.8b	322.3a	11150.9c
		LD	S	66670.0b	556.2a	316.3a	11786.2b
		HD	P	82226.3a	511.6c	293.7b	11390.1b
		HD	S	80004.0a	543.5a	310.9a	12384.4a
ANOVA
年份Year				ns	**	ns	**
品种Maize variety				ns	**	**	*
密度Density				**	*	*	**
种植模式Planting pattern				ns	*	ns	**
密度×种植模式Density×Planting pattern				ns	ns	**	*

年份 Year	品种 Maize variety	密度 Density	种植模式 Planting pattern	穗粒数整齐度 Uniformity of harvested ear number	干物重整齐度 Uniformity of dry matter eight	叶面积整齐度 Uniformity of leaf area
2018	DH605	LD	P	95.27ab	90.43b	95.09ab
		LD	S	99.55a	93.15a	96.32a
		HD	P	94.61b	89.73b	91.80b
		HD	S	95.06ab	91.11ab	94.09ab
	ZD958	LD	P	94.21ab	91.43ab	93.47ab
		LD	S	98.13a	93.67a	95.09s
		HD	P	89.59b	88.48b	88.34b
		HD	S	96.82a	89.87b	92.87ab
2019	DH605	LD	P	97.94ab	90.07ab	92.14a
		LD	S	99.76a	90.44ab	92.55a
		HD	P	94.08b	89.23b	90.00a
		HD	S	98.64a	91.19a	93.26a
	ZD958	LD	P	96.49a	90.06a	90.88ab
		LD	S	99.92a	90.77a	94.62a
		HD	P	90.46b	90.00a	88.48b
		HD	S	93.54b	90.81a	93.65a
ANOVA
年份Year				ns	ns	ns
品种Maize variety				*	*	ns
密度Density				**	ns	*
种植模式Planting pattern				*	*	**
密度×种植模式Density×Planting pattern				*	ns	*

Effects of Staggered Planting with Increased Density on the Photosynthetic Characteristics and Yield of Summer Maize

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