高密度重化控技术对小麦后直播棉花成铃时空分布的调控  

Impact of high planting density with heavy chemical regulation technique on boll spatio-temporal distribution of cotton under direct seeding modes after wheat harvested

作　　者：韦陈华 邓国强 颜超 董振杰 耿吉嘉 宋美珍[2] 张西岭[2] 陈德华[1] 张祥[1] 陈源[1] WEI Chen-hua;DENG Guo-qiang;YAN Chao;DONG Zhen-jie;GENG Ji-jia;SONG Mei-zhen;ZHANG Xi-ling;CHEN De-hua;ZHANG Xiang;CHEN Yuan(Jiangsu Provincial Key Laboratory of Crops Genetics and Physiology,College of Agronomy,Yangzhou University,Yangzhou 225009,China;Cotton Research Institute,Chinese Academy of Agricultural Sciences,Key Laboratory of Cotton Genetic Improvement,Ministry of Agriculture,Anyang 455004,China)

机构地区：[1]扬州大学农学院江苏省作物遗传生理重点实验室,江苏扬州225009 [2]中国农业科学院棉花研究所,农业部棉花遗传改良重点实验室,河南安阳455004

出　　处：《江苏农业学报》2018年第5期1022-1026,共5页Jiangsu Journal of Agricultural Sciences

基　　金：中国农业科学院棉花研究所植棉技术标准化研究与示范团队项目(2016PCTS-1);国家现代农业产业技术体系项目(CARS-18-18);江苏省高校优势学科建设工程资助项目;江苏高校品牌专业建设工程资助项目;扬州大学大学生科技创新训练计划项目;国家博士后基金项目(2016M591934);江苏省博士后基金项目(1601116C)

摘　　要：以特早熟棉花品种国欣12-1为材料,在江苏省扬州市小麦后直播方式下探讨高密度(1 hm^2120 000～150 000株)配合重化控技术(缩节胺施用量240～480 g/hm^2)对棉花集中成铃的影响。结果表明,在1 hm^2150 000株密度下配合使用240 g/hm^2缩节胺可获得较高籽棉产量,2016年、2017年分别达到3 415.5 kg/hm^2、4 416.3kg/hm^2。在此处理组合下实现棉铃在7月20日至8月30日集中成铃,且成铃部位在棉株顶部向下50 cm内。因此,高密度配合适宜化控技术可实现小麦后直播方式下集中成铃于棉株中上部,从而为机械化采收奠定基础。Guoxin 12-1(an especially early-maturing cotton cultivar)was planted under direct seeding modes after wheat harvested in Yangzhou,Jiangsu province.The effect of high planting density(1 hm 2 120 000-150 000 plants)and heavy chemical regulation technique[240-480 g/hm 2 1,1-dimethyl piperidine chloride(DPC)]on centralized boll-setting of cotton was studied.The results showed that yield under the treatment of 1 hm 2 150 000 plants with DPC of 240 g/hm 2 was higher,and reached 3 415.5 kg/hm 2 and 4 416.3 kg/hm 2 in 2016 and 2017,respectively.For this treatment,bolls centrally formed from July 20 th to August 30 th and distributed 50 cm below the top of plant.In conclusion,the high planting density with appropriate chemical regulation technique can realize centralized boll-setting in time and spatial,and lay foundation for mechanized harvesting of cotton.

关 键 词：棉花 小麦后直播 集中成铃 密度 化控技术 

分 类 号：S562.048[农业科学—作物学]