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1982—1985年,在网室、稻缸和田间小区试验中观察了二化螟的蚁螟数量、为害量和稻谷损失量的关系。结果表明:第1、2代幼虫造成的水稻植株被害量和产量损失是变动的。一般呈直线和幂函数曲线相关,从而制定了若干有关回归方程式,可供研究二化螟的经济阈值及预测和防治的参考。
From 1982 to 1985, the relationship between the number of rice stem borer (Chilo suppressalis), the amount of damage and the amount of rice loss was observed in the net room, rice tank and field plot test. The results showed that the amount of damage and yield loss of rice plants caused by first and second generation larvae varied. It is generally related to the straight line and the power function curve. Therefore, some relevant regression equations are formulated, which can be used to study the economic threshold, prediction and control of Chilo suppressalis.