| 棉田三代玉米螟幼虫为害转移规律 |
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| 引用本文： | 王学平,曹雁萍.棉田三代玉米螟幼虫为害转移规律[J].昆虫知识,1996,33(3):144-146. |
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| 作者姓名： | 王学平 曹雁萍 |
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| 作者单位： | 江苏省如皋市植保站!226500(王学平，马宏，丁旭，李明光)，江苏省农科院植保所!210014(曹雁萍) |
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| 摘 要： | 1993年在江苏省如皋市研究了棉田三代玉米螟幼虫为害转移规律。结果表明，棉田三代玉米螟为害，因棉株生育状况而变，初龄幼虫为害表现为随机选择，在蕾、叶柄中的幼虫，2、3龄时向外转移为害。高龄幼虫绝大多数为害大铃，少量蛀杆。依据棉田发生为害规律，三代玉米螟防治时间，以卵盛期用药最佳。
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| 关 键 词： | 棉花 三代玉米螟幼虫 为害规律 |
The transfer pattern of the 3rd generation larvae of cornborer in cotton field |
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| Wang Xue-Ring , Ma Hong, Ding Xu, Li Ming-Guang.The transfer pattern of the 3rd generation larvae of cornborer in cotton field[J].Entomological Knowledge,1996,33(3):144-146. |
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| Authors: | Wang Xue-Ring Ma Hong Ding Xu Li Ming-Guang |
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| Abstract: | The feeding position of the 3rd generation of cornborer in cotton was studied in Rugao, Jiangiu province, 1993. The results showed that the damage caused by the 3rd generation cornboer in cotton vdried with theinstar stages . The damage from lst instar larvae was random in cotton, the 2nd and 3rd instar larvas generally fedin bud and leafstalk on cotton the higher instar larvae mostly harmed the bolls and a few of them bored the cotton stems. According to this, the best control time for the 3rd generaton of cornborer was the maximum hatchingperiod. |
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| Keywords: | cornborer cotton feeding position |
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