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随着机采棉面积的逐年增加,棉花脱叶剂的选择和使用技术成为八师发展机采棉的关键技术之一,开展机采棉脱叶剂剂型筛选和使用技术示范推广工作显得尤为重要。本试验对噻苯·敌草隆悬浮剂进行了棉田脱叶效果调查,结果表明,脱叶效果与施药时间存在一定相关性,应适时施药,施药偏晚对棉花脱叶和吐絮均有一定的影响;噻苯·敌草隆13 mL/667 m2+40%乙烯利100 mL/667 m2+助剂52 mL/667 m2脱叶效果较好,药后20 d脱叶率最高可达97.2%。
With the increasing area of machine-picked cotton area, the selection and application of cotton defoliants become one of the key technologies in the development of machine-applied cotton for the eight divisions. It is particularly important to carry out screening and use of machine-applied decolorant formulations . The test thiophene diuron suspension agent cotton field defoliation effect, the results show that the defoliation effect and application time there is a certain correlation should be timely application of pesticides, late application of cotton leaf defoliation and boll Had a certain effect; thiophene diuron 13 mL / 667 m2 + 40% ethephon 100 mL / 667 m2 + auxiliaries 52 mL / 667 m2 defoliation better effect, 20 d after drug defoliation rate up to 97.2 %.