新疆农业科学2023，Vol.60Issue(11)：2609-2617,9.DOI:10.6048/j.issn.1001-4330.2023.11.002
种植密度对76 cm等行距机采棉冠层结构、冠层温湿度及产量的影响
Effects of planting density on canopy structure,canopy temperature and humidity and yield of 76 cm machine-picked cotton with equal row spacing
摘要
Abstract
[Objective]To screen out the most suitable planting density suitable for planting with 76 cm machine pick up cotton equal row spacing.[Methods]From April to October 2020,76 cm equal row spacing plastic film was used for planting,with 9 × 104 plants/hm2(A)and 12 × 104 plants field trials were conducted at five planting densities of/hm2(B),15 × 104 plants/hm2(C),18 × 104 plants/hm2(D),and 21 × 104 plants/hm2(E).Inclination angle(MTA),canopy opening(DIFN),light interception rate,canopy temper-ature,humidity,yield and other indicators were used to study the effects of different planting densities on cot-ton canopy structure,canopy temperature and humidity and yield.[Results]The LAI and leaf inclination an-gle of each treatment increased with the increase of planting density,which always showed E＞D＞C＞B＞A,and the canopy opening basically showed A＞B＞C＞D＞E;The light interception rate of each treatment ba-sically showed a"V"-shaped variation trend in space,and the higher the density,the lower the average tem-perature and the higher the average humidity in the canopy.When the treatment level was 15 × 104 plants/hm2,the number of bolls per plant and the weight of single bolls were significantly increased compared with the control,and the yield of seed cotton was 4,849.96 kg/hm2.The yields were increased by 41.94％,24.20％,4.72％and 15.20％respectively compared with other treatments.[Conclusion]Comprehensively considering,in this experiment,the density of 15 × 104 plants/hm2 can obtain a better cotton canopy struc-ture,which is beneficial to the canopy light distribution and obtains higher yield.关键词
棉花/76 cm等行距/种植密度/冠层结构Key words
cotton/76 cm equal row spacing/planting density/canopy structure分类
农业科技引用本文复制引用
王家勇,李春梅,徐文修,李鹏程,张娜,李玲,马云珍,王芳..种植密度对76 cm等行距机采棉冠层结构、冠层温湿度及产量的影响[J].新疆农业科学,2023,60(11):2609-2617,9.基金项目
国家重点研发计划项目(2020YFD1001001) （2020YFD1001001）
新疆农业大学研究生科研创新项目(XJAUGRI2022035) （XJAUGRI2022035）
新疆农业大学作物学重点学科(XNCDKY2021013)The National Research and Development Program Project(2020YFD1001001) （XNCDKY2021013）
Graduate Scientific Research and Innovation Project of Xinjiang Agricultural University(XJAUGRI2022035) （XJAUGRI2022035）
The Crop Project of Xinjiang Agricultural University(XNCDKY2021013) （XNCDKY2021013）
