摘要
为了明确赣北地区油后直播棉适宜钾肥投入量,研究施钾量对赣北植棉区油后直播棉干物质积累与分配、产量及产量构成的影响。试验设置6个处理(分别施纯钾0 kg/hm^2、60 kg/hm^2、120 kg/hm^2、180 kg/hm^2、240 kg/hm^2、300 kg/hm^2),测定棉花收获期各器官干物质质量、产量及产量构成等指标。研究结果表明,施钾量在0~240 kg/hm^2范围内,棉花单株干物质质量随施钾量增加而增加,施钾量在180~300 kg/hm^2范围内,棉花各器官干物质质量差异未达显著水平;施钾量240 kg/hm^2处理棉花籽棉产量最高;施钾量在180~300 kg/hm^2范围内棉花单株铃数、单铃重、籽棉产量未产生显著差异。综上所述,赣北地区早熟油后直播棉施钾量为240 kg/hm^2左右可获得高产。
In order to determine the amount of potassium fertilizer suitable for direct seeding cotton after rape in northern Jiangxi province,and study the effect of potassium application on dry matter accumulation and distribution,yield and yield composition of direct seeding cotton after rape in northern Jiangxi province.Six treatments(applying pure potassium 0 kg/hm^2,60 kg/hm^2,120 kg/hm^2,180 kg/hm^2,240 kg/hm^2,300 kg/hm^2 respectively)were set up in the experiment to determine the dry matter quality,yield and yield components of all organs in the cotton harvest period.The results showed that the dry matter quality per plant increased with the increase of potassium application in the range of 0-240 kg/hm^2,and the difference of dry matter quality in different organs of cotton was not significant in the range of 180-300 kg/hm^2;the yield of cotton seed cotton was the highest in the treatment of 240 kg/hm^2.There was no significant difference in boll number per plant,boll weight per plant and seed cotton yield in the range of 180-300 kg/hm^2.In conclusion,the high yield of direct seeding cotton after rape could be obtained when the application amount of potassium was about 240 kg/hm^2.
作者
秦宇坤
陈俊英
王玉萍
张允昔
陈义桥
张丽娟
Qin Yukun;Chen Junying;Wang Yuping;Zhang Yunxi;Chen Yiqiao;Zhang Lijuan(Cotton Research Institute of Jiangxi Province.,Jiujiang,Jiangxi 332105,China;Agricultural and rural Bureau of Chaisang District,Jiujiang City.,Jiujiang,Jiangxi 332100,China)
出处
《棉花科学》
2020年第4期3-7,共5页
Cotton Sciences
基金
国家现代农业产业技术体系-棉花产业体系(CARS-15-36)
江西省重点研发计划项目(20192BBFL60005)。
关键词
油后直播棉
施钾量
干物质积累
产量
Direct seeding cotton after rape
Potassium application amount
Dry matter accumulation
Yield
