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红松球蚜(Pineus sp)属同翅目球蚜科,是我省红松幼树和苗木的主要害虫之一。该虫在伊春林区每年发生3代,由于它是刺吸式口器,体外又有一层白色蜡丝层,防治难度较大。为保护人工幼林与种子园的红松幼树健康生长,我们进行了释放异色瓢虫(L. axyridis)防治红松球蚜试验,取得了初步效果。一、试材准备及标准地选设1.瓢虫来源:供试瓢虫成虫55斤,系1979年9月末10月初和1980年5月上旬从石砬周围招引和捕获的。供试的卵和幼虫是从稠李、柳树等非目的树种上采集的。2.标准地选设:标准地I设在大青川林
Pine cusp is a Homoptera aphididae, which is one of the main pests of Korean pine and saplings in our province. The insect in Yichun forest every 3 generations occur, because it is sucking mouthparts, in vitro there is a layer of white wax layer, prevention and control more difficult. In order to protect the young growth of young Korean pine and young Korean pine seedlings in the garden, we carried out the release of L. axyridis to control P. koraiensis aphid and achieved preliminary results. First, the test material preparation and selection of standard 1. Ladybugs Source: The test ladybug adult 55 pounds, Department of September 1979 early October and early May 1980 from Shijie around attracting and capture. The tested eggs and larvae were collected from non-target tree species such as Prunus dulcis and Willow. 2 standard selection: standard I set in the large Qingchuan Lin