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以3个不同剂量的540g/L噻苯敌草隆SC(脱吐隆)和一个常用剂量的40%乙烯利AS混用及540g/L噻苯敌草隆SC单剂、40%乙烯利AS单剂为处理,以清水做对照,进行噻苯敌草隆脱叶剂对棉花脱叶、吐絮效果的研究。结果表明,药后3d、7d、15d、22d的脱叶率和吐絮率随噻苯敌草隆浓度增加而增加。药后7d,各药剂处理脱叶率较清水对照显著提高,药后22d,噻苯敌草隆与乙烯利混用3个处理脱叶率达94.8%～100%,噻苯敌草隆单剂82.6%,乙烯利单剂62.3%,清水对照43.1%;药后15d,各药剂处理吐絮率达33.4%～54.8%,其中噻苯敌草隆单剂36.1%,乙烯利单剂41.8%,清水对照9.2%,均较清水对照显著提高;霜前吐絮率(药后22d),噻苯敌草隆与乙烯利混用3个处理为35.0%～69.7%,噻苯敌草隆单剂39.8%,乙烯利单剂46.0%,清水对照17.3%。
Three different dosages of 540g / L thiophene diuron SC (desiprolone) and a common dose of 40% ethephon AS mixed with 540g / L thidiazuron SC single agent, 40% ethephon AS single Agent for treatment, with water as a control, thiophanate diuron decollet on cotton defoliation, the effect of vomiting. The results showed that the rate of defoliation and vomiting at 3d, 7d, 15d and 22d increased with increasing concentration of thidiazuron. Seven days after treatment, the rate of defoliation of each agent was significantly higher than that of fresh water. After 22 d, the rate of defoliation of thioridil and ethephon was 94.8% -100%, and that of thiophene diuron was 82.6 %, Ethephon 62.3%, water control 43.1%; 15d after treatment, the rate of each drug treatment of boll-opening was 33.4% ~ 54.8%, thiazide diuron single agent 36.1%, ethephon single agent 41.8% 9.2%, respectively, compared with that of the control group. Compared with the control, the bollworm rate (35d% -69.7%) of thidiazuron and ethephon mixed with ethephon were significantly increased 46.0% for single dose and 17.3% for water control.