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5%三氟嘧磺草胺SC对柑橘园杂草的防效

Agrochemicals(2021)

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Abstract
[目的]5%三氟嘧磺草胺SC作为一种新型低毒低抗性除草剂,为探究其防除柑橘园杂草的可能性.[方法]采用茎叶定向喷雾法试验了5%三氟嘧磺草胺SC在40.13~160.50 g a.i./hm2处理下对柑橘园杂草的防除效果.[结果]5%三氟嘧磺草胺SC可有效控制柑橘园禾本科杂草,速效性强,持效期达30 d,对柑橘树生长无不良影响.100.31~160.50 g a.i./hm2处理在药后15、30 d对禾本科杂草株防效分别为88.71%~96.15%和82.33%~91.29%,药后30 d对禾本科杂草鲜质量防效为89.27%~95.81%.而对阔叶类杂草防效相对较低,所有处理在药后15、30 d防效均低于对照药剂70%苯嘧磺草胺WG 65.63 g a.i./hm2处理.[结论]5%三氟嘧磺草胺SC防除柑橘园禾本科杂草的推荐使用剂量为100.31~160.50 g a.i./hm2.
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