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试述稻小潜叶蝇的防治措施?

问答题
2022-03-12 17:55
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正确答案

稻小潜叶蝇的防治措施有:
(1)清除田边杂草,减少虫源。
(2)旱育稀植,培育壮秧。
(3)浅水勤灌。特别是该虫产卵盛期(田间)7~10天内,浅水勤灌尤为重要。当田间发生严重时,采取排水露田,可控制该虫为害的发展。
(4)药剂防治。药剂防治的重点是早插、生长嫩绿的小苗稻田。如秧田发生较重,可进行秧田喷药后移栽。药剂防治适期为成虫盛发期和卵孵化盛期。可用10%大功臣或一遍净可湿性粉剂20~30克/667m,5月中下旬插秧田可在插秧后1~2周内,6月插秧可在插秧后3~5天内,田间喷雾或撒施。施药后堵水口7天。


试题解析

标签: 昆虫学 生物学
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