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防治辣椒烟青虫,过去用滴滴涕乳剂200倍液喷洒,角果上农药残留量超过规定指标。为此,我们于1976年在周至县终南公社双明六队和毓兴六队试验用赤眼蜂防治。具体方法是:6月下旬至7月上旬用百泉农专的松毛虫赤眼蜂或本地的拟澳洲赤眼蜂,每亩放2—4万头。结果,烟青虫卵寄生率达71.4—93.7％,百株被害角果,放蜂田44亩平均为4个,喷药防治田10亩平均为5个。同年在二、三代烟青虫产卵期间,双明
Control chili tobacco caterpillar worm, the past with DDT emulsion 200 times spray, pesticide residues on the angle fruit exceeds the required indicators. To this end, we in 1976 in Zhouzhi County Zhongnan Shuangming six teams and Yuxing six teams tested with Trichogramma control. The specific method is: late June to early July with Baiquan Agricultural Tricholoma trichogramma or local trichogramma Australia, put 20,000 to 20,000 mu per mu. As a result, the parasitism rate of tobacco budworm eggs reached 71.4-93.7%, the average number of spoiled fruit horns in 100 strains was 4, and the average yield of sprayed medicinal plants in control field was 5. The same year in the second and third generation of tobacco budworm eggs, Shuangming