摘要
为了明确在喷施脱叶剂条件下新疆阿瓦提县机采棉脱叶效果较好的停水时间,研究了喷施脱叶剂对不同停水时间等行距机采棉脱叶、吐絮效果、产量性状及纤维品质的影响。以棉花品种‘新陆中54号’为试验材料,于吐絮期对不同停水时间(8月10日、8月20日、8月30日)处理喷施脱叶剂,以清水处理为对照。结果表明,与清水处理比,喷施脱叶剂可增加棉花脱叶率和吐絮率,使棉花吐絮脱叶提前且集中,但挂枝率有所增加。且使棉株个别部位产量性状及纤维品质有所下降,却不影响整体产量和纤维品质的形成。不同停水时间处理下,8月20日停水处理脱叶率、吐絮率较高且挂枝率最低,对气象因子适应性较强;棉株不同部位产量构成因素和纤维品质较协调。喷施脱叶剂条件下8月20日停水更适宜新疆阿瓦提县等行距机采棉种植。
In order to clarify the water-shutdown time of better defoliation effect under spraying defoliator,the effects of spraying defoliator on the defoliation and flocculation effect,yield traits and fiber quality of cotton harvested by different row spacing machines with different water-shutdown time were studied.The cotton variety‘Xinluzhong 54’was used as the experimental material to spray defoliants at different water-shutdown time(water treatment shutdown on 10 August,water treatment shutdown on 20 August,and water treatment shutdown on 30 August)during flocculation period,and the clean water treatment was used as the control.The results showed that spraying defoliant increased cotton defoliation rate and flocculation rate with the clean water treatment,which made cotton flocculation and defoliation earlier and more concentrated,but increased branch hanging rate.The yield traits and fibers of different parts of cotton plant were decreased,but the formation of overall yield and fibre quality was not affected.Under different water shutdown time treatments,water treatment shutdown on 20 August had higher defoliation rate,higher flocculation rate and lowest hanging rate,stronger adaptability to meteorological factors,and better coordination of yield components and fiber quality in different parts of cotton plant.Therefore,water treatment shutdown on 20 August under the condition of spraying defoliant was more suitable for mechanically picked cotton planting in Awati County,Xinjiang.
作者
阿不都卡地尔.库尔班
陈平
程强
杨培
张巨松
郭仁松
林涛
Abudukadier Kuerban;CHEN Ping;CHENG Qiang;YANG Pei;ZHANG Ju-song;GUO Ren-song;LIN Tao(Cotton Engineering Research Center,Ministry of Education,Xinjiang Agricultural University,Urumqi 830052,China;Awati County Meteorological Bureau,Aksu Prefecture,Xinjiang,Awati 843200,China;Institute of Economic Crops,Xinjiang Academy of Agricultural Sciences,Urumqi 830091,China)
出处
《新疆农业大学学报》
CAS
2018年第3期157-163,共7页
Journal of Xinjiang Agricultural University
基金
国家重点研发项目(2017YFD0101605)
新疆维吾尔自治区重点研发专项(2016B01001-2)
2017年度新疆农业大学研究生科研创新项目(XJAUGRI2017-012)
关键词
脱叶剂
停水时间
机采棉
脱叶效果
纤维品质
defoliant
water shutdown time
mechanically picked cotton
defoliation effect
fiber quality
