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稻纵卷叶螟 Cnaphalocrocis medinalis Guenee 在杂交稻株上产卵,化蛹的垂直分布调查报道很少,笔者于1985年和1989年六(四)代稻纵卷叶螟大发生期间,对其产卵、化蛹的垂直分布情况做了详细的调查,结果如下:1.产卵分布:两年共调查15块稻田,810株,745粒卵。其中1985年选10块汕优6号稻田,调查610株,查卵468粒;1989年选5块汕优64稻田,调查200株,查卵277粒。结果表明,卵的部位分布趋向稻株中上部,而又以倒三叶最多,占30.07%,倒二、四叶次之,分
Cnaphalocrocis medinalis Guenee on the hybrid rice plants spawning, pupal vertical distribution survey reported few, the author in 1985 and 1989 six (four) generations of rice leaf roller occurs, its production Eggs, pupal vertical distribution of the situation made a detailed investigation, the results are as follows: 1 spawning distribution: two years of a total of 15 paddy fields, 810, 745 eggs. Among them, 10 rice fields of Shanyou No.6 were selected in 1985, 610 were surveyed and 468 eggs were found. In 1989, 5 Shanyou 64 rice fields were selected and 200 were surveyed and 277 eggs were checked. The results showed that the distribution of the eggs tended to the upper part of the rice plant, and the most was the inverted clover, accounting for 30.07%, followed by the second and fourth leaves