新疆农业科学 ›› 2023, Vol. 60 ›› Issue (11): 2609-2617.DOI: 10.6048/j.issn.1001-4330.2023.11.002

• 作物遗传育种·种质资源·分子遗传学·土壤肥料 • 上一篇    下一篇

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

王家勇1(), 李春梅1, 徐文修1(), 李鹏程2(), 张娜1, 李玲1, 马云珍1, 王芳1   

  1. 1.新疆农业大学农学院/棉花教育部工程研究中心,乌鲁木齐 830052
    2.中国农业科学院棉花研究所, 河南安阳 455000
  • 收稿日期:2023-02-19 出版日期:2023-11-20 发布日期:2023-12-07
  • 通信作者: 徐文修(1962-),女,河北蠡县人,教授,博士,硕士生/博士生导师,研究方向为绿洲农作制度与资源高效利用,(E-mail)xjxwx@sina.com;李鹏程(1972-),男,湖北荆州人,副研究员,博士,硕士生导师,研究方向为棉花养分精准管理,(E-mail)lipengchengcr@163.com
  • 作者简介:王家勇(1997-),男,江苏沛县人,硕士研究生,研究方向为耕作制度与农业生态,(E-mail)wjyxjau@163com
  • 基金资助:
    国家重点研发计划项目(2020YFD1001001);新疆农业大学研究生科研创新项目(XJAUGRI2022035);新疆农业大学作物学重点学科(XNCDKY2021013)

Effects of planting density on canopy structure, canopy temperature and humidity and yield of 76 cm machine-picked cotton with equal row spacing

WANG Jiayong1(), LI Chunmei1, XU Wenxiu1(), LI Pengcheng2(), ZHANG Na1, LI Ling1, MA Yunzhen1, WANG Fang1   

  1. 1. Cotton Engineering Research Center, Ministry of Education/College of Agronomy, Xinjiang Agricultural University, Urumqi 830052, China
    2. Institute of Cotton, Chinese Academy of Agricultural Sciences, Anyang Henan 455000, China
  • Received:2023-02-19 Online:2023-11-20 Published:2023-12-07
  • Correspondence author: XU Wenxiu(1962-),female, Lixian County of Hebei Province, Professor, doctor, Doctoral tutor, Research direction: farming system and agricultural ecology, (E-mail) xjxwx@sina.com;LI Pengcheng(1972-),male,Jingzhou,Hubei,Associate Professor,Doctoral tutor,Research direction:Accurate mamagement of cotton nutirents,(E-mail)lipengchengcr@163.com
  • Supported by:
    The National Research and Development Program Project(2020YFD1001001);Graduate Scientific Research and Innovation Project of Xinjiang Agricultural University(XJAUGRI2022035);The Crop Project of Xinjiang Agricultural University(XNCDKY2021013)

摘要:

【目的】 筛选出适宜76 cm等行距种植的机采棉最适宜种植密度。【方法】 2020年4~10月采用76 cm等行距地膜种植,设置9×104株/hm2(A)、12×104株/hm2(B)、15×104株/hm2(C)、18×104株/hm2(D)、21×104株/hm2(E)5个种植密度进行田间试验,测定叶面积指数(LAI)、叶倾角(MLA)、冠层开度(DIFN)、光截获率(PAR)、冠层温度、湿度、产量等指标,研究不同种植密度对棉花冠层结构、冠层温湿度及产量的影响。【结果】 各处理棉花叶面积指数和叶倾角均随种植密度的增加而增加,呈现现为E>D>C>B>A,冠层开度则基本呈现出A>B>C>D>E;各处理的光截获率在空间上基本上呈现出“V”型变化趋势,且密度越大,冠层内平均温度越低、平均湿度越高。当处理水平为15×104株/hm2时,单株铃数和单铃重较对照有显著提高,同时获得的籽棉产量较高为4 849.96 kg/hm2。分别依次比其他处理增产41.94%、24.20%、4.72%和15.20%。【结论】 密度以15×104株/hm2可以获得较优的棉花群体冠层结构,有利于冠层光分布,并获得较高的产量。

关键词: 棉花; 76 cm等行距; 种植密度; 冠层结构

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 temperature, humidity, yield and other indicators were used to study the effects of different planting densities on cotton canopy structure, canopy temperature and humidity and yield. 【Results】 The LAI and leaf inclination angle 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 basically showed a "V"-shaped variation trend in space, and the higher the density, the lower the average temperature 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 structure, which is beneficial to the canopy light distribution and obtains higher yield.

Key words: cotton; 76 cm equal row spacing; planting density; canopy structure

中图分类号: 


ISSN 1001-4330 CN 65-1097/S
邮发代号:58-18
国外代号:BM3342
主管:新疆农业科学院
主办:新疆农业科学院 新疆农业大学 新疆农学会

出版单位:《新疆农业科学》编辑部
地址:乌鲁木齐市南昌路403号新疆农业科学院
邮编:830091
电话:0991-4502046
E-mail:xjnykx-h@xaas.ac.cn


版权所有 © 《新疆农业科学》编辑部
本系统由北京玛格泰克科技发展有限公司设计开发
总访问量: 今日访问: 在线人数:
网站
微信公众号
淘宝购买
微店购买