摘要
为对比不同剂量的14%噻苯·敌草隆悬浮剂(SC)对棉花脱叶催熟及产量品质影响的差异,设置有效成分为T1(42g/hm^(2))、T2(84g/hm^(2))、T3(126g/hm^(2))和T4(168g/hm^(2))4个不同剂量的14%噻苯·敌草隆SC处理,以有效成分为225g/hm^(2)的50%噻苯隆可湿性粉剂和1200g/hm^(2)的80%敌草隆可湿性粉剂为对照药剂处理,同时以清水为对照。在北疆呼图壁县、南疆库尔勒市2个试验点同时进行田间试验,研究14%噻苯·敌草隆SC对棉花脱叶催熟及其产量、品质的影响。结果表明,T4处理的脱叶效果最好,脱叶率均达到了75%以上;T3处理的催熟效果最好,吐絮率均高于93%;除T1外各试验药剂处理均未对棉花产量及其构成因素、纤维品质产生不利影响,通过本研究探明新疆棉区使用14%噻苯·敌草隆SC进行棉花化学脱叶存在一定优势。满足机采需求的同时,综合考虑农药减施以及生产成本,推荐14%噻苯·敌草隆(SC)有效成分量84~126g/hm^(2)。
In order to compare the effects of different dosages of 14%thiobenzene-dioxalon SC on defoliation,ripening,yield and quality of cotton,this study tested four different doses of 14%thidiazuron-dioxalon SC,whose active ingredient were T1(42g/ha),T2(84g/ha),T3(126g/ha)and T4(168g/ha),respectively.50%thidiazuron WP with 225g/ha active ingredient and 80%dioxalon WP with 1200g/ha active ingredient were used as control agents,and water was also used as control.Field experiments were conducted to study the effects of 14%thiobenzene-dioxalon SC on defoliation,ripening,yield and quality of cotton in Hutubi county of northern Xinjiang and Korla of southern Xinjiang.The results showed that T4 had the best defoliation effect,and its defoliation rate was more than 75%;T3 had the best ripening effect,and the boll opening rate was higher than 93%.None of the treatments,except T1,had adverse effects on cotton yield and its components and fiber quality.The study also showed that 14%thiobenzene-dioxalon SC had certain advantages in chemical defoliation in Xinjiang cotton areas.Considering pesticide reduction and production cost,it was recommended that the active ingredient content of 14%thiobenzene-dioxalon SC should be within 84-126g/ha.
作者
吴雪琴
刘开宇
韩春华
阿力木江·克来木
崔延南
李江余
马春梅
仲文帆
赵强
Wu Xueqin;Liu Kaiyu;Han Chunhua;Alimujiang·Kelaimu;Cui Yannan;Li Jiangyu;Ma Chunmei;Zhong Wenfan;Zhao Qiang(College of Agronomy,Xinjiang Agricultural University/Engineering Research Center of Cotton,Ministry of Education,Urumqi 830052,Xinjiang,China;Institute of Cotton Research of Chinese Academy of Agricultural Sciences,Anyang 255000,Henan,China;Beijing Guangyuan Yinong Chemical Co.,Ltd.,Beijing 100083,China)
出处
《作物杂志》
北大核心
2023年第5期164-169,共6页
Crops
基金
新疆兵团科技攻关项目“棉花化学打顶整枝综合配套技术集成与示范”(2018AB039)
新疆维吾尔自治区重大科技专项“机采棉塑型封顶与脱叶催熟技术研究示范”(2020A01002-2)。
关键词
棉花
噻苯·敌草隆
脱叶率
吐絮率
产量
Cotton
Thiobenzene-dioxalon
Defoliation rate
Boll opening rate
Yield
