摘要
以直播棉冈棉11号为材料,设置3个不同种植密度、5个不同施氮量处理,探究鄂东植棉区种植密度和施氮量对直播棉产量及其相关性状的影响,为冈棉11号的推广应用提供理论支持。结果表明,在一定范围内,随着施氮量增加,冈棉11号产量增加,当施氮量高于112.5 kg/hm^2时,产量不增反减;高种植密度处理即82500株/hm^2下产量最高,与中种植密度71250株/hm^2条件下相差不大,差异不显著。综上,冈棉11号在鄂东植棉区种植密度应控制在7.2万~8.2万株/hm^2、施氮量可减少至112.5 kg/hm^2,此条件下可以获得高产。
In order to provide theoretical support for the popularization and application of direct-seeded cotton Gangmian 11,three densities and five nitrogen fertilizer treatments were used to study the effects of density and nitrogen application on the yield and relat⁃ed characters in eastern Hubei province.The results showed that in a certain range,with the increasing of nitrogen application,the yield of Gangmian 11 increased.When the nitrogen application was higher than 112.5 kg/hm^2,the yield was lower than that under this nitrogen application level.when the high density treatment was 82500 plants/hm^2,the yield was the highest,and there was no signifi⁃cant difference between the high density treatment and the medium density treatment of 71250 plants/hm^2.To sum up,in eastern Hu⁃bei province,to obtain high yield,the density was controlled at 72000 plants/hm^2 to 82000 plants/hm^2 and the nitrogen application could be reduced to 112.5 kg/hm^2.
作者
赵树琪
闫振华
张华崇
李蔚
黄晓莉
戴宝生
ZHAO Shu-qi;YAN Zhen-hua;ZHANG Hua-chong;LI Wei;HUANG Xiao-li;DAI Bao-sheng(Huanggang Academy of Agricultural Sciences,Huanggang 438000,Hubei,China)
出处
《湖北农业科学》
2020年第23期48-50,67,共4页
Hubei Agricultural Sciences
基金
国家现代农业产业技术体系资金资助项目(CARS-18-41)
湖北省农业科技创新中心资助项目(2018-620-001-03)。
关键词
棉花
冈棉11号
直播
种植密度
施氮量
产量
cotto
Gangmian 11
direct-seeded
planting density
nitrogen application
yield
