论文部分内容阅读
1981年,我们在观察稻纵卷叶螟生命表时发现,稻纵卷叶螟Cnaphalocrocis medinalis幼虫不同虫龄对纵卷叶螟绒茧蜂Apanteles cypris Nixon的发育历期有明显的影响。现将结果整理如下。方法采回稻纵卷叶螟成虫在室内稻苗上产卵,幼虫孵化后分别进入一、二、三、四龄时,各按一定数量(100～200头)接于田间无虫的稻苗上,每龄设四个小区,每小区禾20丛,每丛禾接虫1～3头,让天敌自然寄生。当各龄将进入或刚进入下一龄时,将其采回饲养。根椐接放虫与回收各龄日期及室内寄生蜂最先与最后钻出的日期,计算寄生蜂产卵至幼体钻出时的发育历期。结果与讨论结果列于表1。
In 1981, when we observed the life table of rice leaf roller, we found that the different larval ages of Cnaphalocrocis medinalis had a significant effect on the developmental period of Apanteles cypris Nixon. The results are now organized as follows. Methods The adults of Cnaphalocrocis medinalis oviposited on indoor rice seedlings. After the larvae hatched, they entered the first, second, third and fourth instar, respectively, and were each fed with a certain amount of rice seedlings On each of the four communities, each district Wo 20 plexus, each Cong Wo 1 to 3, let natural enemies naturally parasitic. When each age will enter or just enter the next age, they will be collected back to raise. Root 椐 access and recovery of insects and dates back to the date of the first and last drilled parasitoid bees, calculate the parasitoid bee eggs to the larvae development period. The results and discussion are summarized in Table 1.