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暗黑鳃金龟(Holotrichia parallela Motsch)是花生最重要的地下害虫之一。年生一代,以老熟幼虫和少数成虫越冬。8月上旬到9月中旬,即花生幼果期到成熟收获前是三龄幼虫严重为害时期。发生区内的植被组成,产卵及孵化期内的降水和土壤水分是影响种群分布和种群数量变动的主导因素。不同生境内的越冬幼虫无滞育特性,春季均不上移为害,直接在越冬处化蛹,因此,必须在花生生长期进行防治。成虫产卵盛期到幼虫孵化盛期,花生植株在封垄以前是生长期防治的有利时期。应用5%辛硫磷、地亚农颗粒剂,每亩5斤,或6%666毒土(1:80斤土)顺垄撒施复土,有明显的治虫增产效果,已在生产中推广应用。
Holotrichia parallela Motsch is one of the most important underground pests of peanuts. The older generation, overwintering with mature larvae and a few adult worms. Early August to mid-September, that is, peanut young fruit mature to harvest before the third instar larvae seriously damaged period. Vegetation in the area, precipitation and soil moisture during spawning and hatching periods are the dominant factors affecting population distribution and population changes. Overwintering larvae in different habitats have no diapause characteristics and are not upregulated in spring. They pupate directly in the winter, so they must be controlled during peanut growth. The adult spawning period to the larvae hatch peak, peanut plants before sealing the ridge is a favorable period of growth control. Applying 5% phoxim, earthnut granules, 5 pounds per acre, or 6% 666 toxic soil (1: 80 jin soil) along the ridge sprinkle the soil, there is a clear effect of increasing pest control, has been promoted in production application.