不同药剂催熟对棉花脱叶和产量品质的影响

摘要

This Paper studied the different spraying methods of ethephon and paraquat on the disleaving rate,boll open-ing rate,yield and fiber quality,using C619 as material.The results showed that the effect of 400g?L ethephon 900g?hm2 +200g?L paraquat 600ml?hm2 was better,Twenty -first days after treatment,its disleaving rate and boll opening rate were 60.5% and 73.25%,but the theoretical yield was signficantly lower than CK.the effects of the remain treatments to the numbers of boll per plant,the boll weight,the lint precentage,the seed index and the lint index were not obviously.In treatment 2 (two single application of ethephon)elongation rate of cotton was significantly lower than that of CK,other appli-cation treatments without significant difference on cotton fiber quality indicators and control..%以常规棉品系 C619为材料，研究乙烯利和百草枯不同施药方法对棉花脱叶吐絮和产量品质的影响。结果表明，用400 g？L 乙烯利900 ml？hm2与200 g？L 百草枯600 ml？hm2混配施用对棉花的催熟脱叶效果较好，处理后第21天的脱叶率和吐絮率分别为60.5％和73.25％，但理论籽棉产量显著低于对照。各药剂处理对棉花单株铃数、单铃重、衣分、籽指及衣指的影响不明显。除处理2（分两次单施乙烯利）棉花伸长率显著低于对照外，其他施药处理棉花纤维品质指标与对照无明显差异。