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粘虫是一种暴发性的食叶害虫,常年对小麦造成不同程度的为害.为了正确估计其为害所造成的相应损失,定出经济合理的防治指标.我们于1981-1982年对粘虫幼虫进行了食量测定,并模拟其为害征状进行了田间试验,以研究小麦不造成经济损失所耐受的最大虫量.同时,在田间作了笼罩接虫和大田调查,对模拟结果进行验正,提出了药剂防治指标.结果如下:
Mythimna separata is an outbreak of leaf-feeding pests and causes different degrees of damage to wheat in the year .In order to correctly estimate the damage caused by the corresponding losses, to determine the economic and reasonable control indicators.We in 1981-1982 against armyworm larvae The food intake was measured and field experiments were conducted to simulate the damage symptoms to study the maximum amount of insects that wheat could tolerate without economic loss.At the same time, , Proposed drug control indicators.The results are as follows: