干旱区生态环境知识资源中心(Arid): 种植密度与施氮量对陇中旱农区玉米产量及光合特性的影响

Arid

	种植密度与施氮量对陇中旱农区玉米产量及光合特性的影响
其他题名	Effects of planting density and nitrogen fertilizer rate on maize yield and photosynthetic characteristics in arid areas of central Gansu,China
	康彩睿; 谢军红; 李玲玲; 王嘉男; 郭喜军; 彭正凯; 王进斌; Setor Kwami Fudjoe; 王林林
来源期刊	草业学报
ISSN	1004-5759
出版年	2020
卷号	29 期号:5 页码:141-149
中文摘要	在陇中旱农区,依托2012年布设的田间定位试验研究了种植密度与施氮量对全膜双垄沟播玉米光合特性、产量及产量构成要素的影响。采用裂区设计,主处理为种植密度:4.5(D_1)、5.25(D_2)、6(D3)、6.75万株·hm~(-2) (D_4);副处理为施氮水平:施纯氮200(N_2)和300kg·hm~(-2)(N_3)。结果表明:1)随着玉米种植密度和施氮量的增加,玉米的叶面积指数增加,但叶片的叶绿素含量减小;2)施氮量对玉米的光合作用影响不显著,但玉米光合作用随种植密度增加而减弱;3)D_2N_2处理下的玉米产量最高,D_2的籽粒产量和生物产量较D_1分别增加了15.2%和14.5%,N_2的籽粒产量和生物产量较N_3增加了10.9%和4.8%。4)玉米籽粒产量与穗数、穗粒数显著正相关,与百粒重无显著相关关系。因此,在陇中旱农区应用全膜双垄沟播技术种植玉米,密度为5.25万株·hm~(-2), 施纯氮200 kg·hm~(-2)左右时,叶片光合作用关系协调,有利于穗数和穗粒数的增加,从而提高玉米籽粒产量。
英文摘要	This research evaluated the effects of planting density and nitrogen fertilizer rate on maize photosynthetic characteristics,yield and yield components under full film double ridge plastic mulch.The research relied on a field experiment that was set up in 2012at Dingxi,in the Longzhong region.The experiment used a split plot design,with four planting densities as the main plot factor:45000(D_1),52500(D_2),60000(D3),67500 plants·ha~(-1)(D_4).The sub plot treatment comprised two nitrogen fertilizer rates:200(N_2)and 300kg N· ha~(-1)(N_3).It was found that the leaf area index of maize improved with increase in planting density and nitrogen fertilizer rate,while the chlorophyll concentration decreased with increasing planting density.With increased planting density,the photosynthesis rate of maize decreased.Nitrogen fertilizer rates had no significant effect on the photosynthesis of maize.The treatment(D_2N_2)had the highest yield.The grain yield and biomass of D_2 were,respectively,15.2%and 14.5% higher than D_1,while the grain yield and biomass under N_2 were,respectively, 10.9%and 4.8%higher than those of N_3.There was a significant positive correlation between grain yield and ear number and kernel number,but no significant correlation with hundred-grain weight.Therefore, under double furrow sowing with full film mulch in dryland farming areas of central Gansu,China,aplanting density of 52500plants·ha~(-1) and nitrogen fertilizer application of 200kg N·ha~(-1) was found to be optimal for sustainable cultivation of maize.This cultivation regime facilitated leaf photosynthesis,leading to increased numbers of ears and kernels,thus enhancing maize grain yield.
中文关键词	种植密度 ; 施氮量 ; 玉米 ; 产量 ; 光合特性
英文关键词	planting density nitrogen rates maize yield photosynthetic characteristics
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:6718700
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353356
作者单位	康彩睿, 甘肃农业大学农学院, 甘肃省干旱生境作物学重点实验室, 兰州, 甘肃 730070, 中国. 谢军红, 甘肃农业大学农学院, 甘肃省干旱生境作物学重点实验室, 兰州, 甘肃 730070, 中国. 李玲玲, 甘肃农业大学农学院, 甘肃省干旱生境作物学重点实验室, 兰州, 甘肃 730070, 中国. 王嘉男, 甘肃农业大学农学院, 甘肃省干旱生境作物学重点实验室, 兰州, 甘肃 730070, 中国. 郭喜军, 甘肃农业大学农学院, 甘肃省干旱生境作物学重点实验室, 兰州, 甘肃 730070, 中国. 彭正凯, 甘肃农业大学农学院, 甘肃省干旱生境作物学重点实验室, 兰州, 甘肃 730070, 中国. 王进斌, 甘肃农业大学农学院, 甘肃省干旱生境作物学重点实验室, 兰州, 甘肃 730070, 中国. 王林林, 甘肃农业大学农学院, 甘肃省干旱生境作物学重点实验室, 兰州, 甘肃 730070, 中国.
推荐引用方式 GB/T 7714	康彩睿,谢军红,李玲玲,等. 种植密度与施氮量对陇中旱农区玉米产量及光合特性的影响[J],2020,29(5):141-149.
APA	康彩睿.,谢军红.,李玲玲.,王嘉男.,郭喜军.,...&王林林.(2020).种植密度与施氮量对陇中旱农区玉米产量及光合特性的影响.草业学报,29(5),141-149.
MLA	康彩睿,et al."种植密度与施氮量对陇中旱农区玉米产量及光合特性的影响".草业学报 29.5(2020):141-149.