密度、打顶时间与施氮量对长绒棉BMC79产量的影响  

Effects of density,topping time,and nitrogen application rate on the yield of long staple cotton BMC79

作　　者：罗长成 王清连 LUO Changcheng;WANG Qinglian(College of Life Science and Technology,Henan Institue of Science and Technology,Xinxiang 453003,China;Modern Biological Breeding Henan Provincial Collaborative Innovation Center,Xinxiang 453003,China)

机构地区：[1]河南科技学院生命科技学院,河南新乡453003 [2]现代生物育种河南省协同创新中心,河南新乡453003

出　　处：《河南科技学院学报（自然科学版）》2023年第4期1-10,共10页Journal of Henan Institute of Science and Technology(Natural Science Edition)

基　　金：河南省国际科技合作项目(232102521010);新乡市重大科技专项(22ZD003)。

摘　　要：用二次旋转通用组合设计方案,以长绒棉BMC79为试验材料,通过设置密度、打顶时间、施氮量三个试验因子在五个不同水平下进行处理,研究结果表明:单因素中,施氮量、打顶时间对籽棉产量影响显著.交互作用中,密度与打顶时间的交互作用对籽棉产量影响显著.当密度为13549.951株/667m^(2),打顶时间为7月11日,施氮量15.234 kg/667m^(2)时,籽棉产量最大为332.998 kg/667m^(2).单因素中,打顶时间、施氮量对皮棉产量的影响最显著.交互作用中,密度与打顶时间的交互作用对皮棉产量影响显著.当密度为13805.945株/667m^(2),打顶时间为7月10日,施氮量21.444 kg/667m^(2)时,皮棉产量最大为102.798 kg/667m^(2).Using a secondary rotation universal combination design scheme,long-staple cotton BMC79 was used as the test material,and the treatment was carried out at five different levels by setting three test factors:density,topping time and nitrogen application amount.The results showed that:among the single factors,nitrogen application amount and topping time had significant effects on seed cotton yield.When the density is 13549.951 plants/667m2,the topping time is July 11th,and the nitrogen application rate is 15.234 kg/667m2,the maximum yield of seed cotton is 332.998 kg/667m2.Among single factors,topping time and nitrogen application rate have the most significant impact on lint yield.In the interaction,the interaction between density and topping time has a significant impact on lint yield.When the density is 13805.945 plants/667m2,the topping time is July 10th,and the nitrogen application rate is 21.444 kg/667m2,the maximum lint yield is 102.798 kg/667m2.

关 键 词：长绒棉BMC79 密度 打顶时间 施氮量 

分 类 号：S562[农业科学—作物学]