论文部分内容阅读
蛴螬是川中丘陵区花生的主要地下害虫,在为害严重的土块,花生减产十分严重。我们采取了在收获期调查果荚被害率;越冬期调查虫种、虫量和入土深度;生长期调查虫卵的密度及其消长;春天调查越冬幼虫化蛹及移动情况;从3～9月观察成虫的出现规律及交尾、产卵、取食特性;配合室外调查进行室内饲养观察其各虫态的历期和生活周期,最后进行了室内及田间的药剂防治效果试验。结果表明:1.蛴螬是一种杂食牲的地下害虫,危害的作物很多。经过三年对76块花生地的调查,
Scallop is the main underground pest of peanut in hilly area of central Sichuan Province. In severely damaged clods, the peanut yield is very serious. We surveyed the harvest rate of pod damage at harvest period; investigated the species of insects, the amount of insects and the depth of penetration into the soil during the wintering period; investigated the density and growth of the eggs during the growing season; investigated the pupation and movement of overwintering larvae in spring; from March to September Observe the emergence regularity and the mating, spawning and feeding characteristics of adults; observe the duration and life cycle of each insect state with the outdoor investigation, and finally test the effect of pesticides in the field and in the field. The results showed that: 1. Scrofa is a kind of underground pests of omnivorous animals, endangering a lot of crops. After three years of 76 peanut land survey,