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通过 1 999年对二化螟种群在攸县稻区种植制中周年数量动态变化、嗜性和为害特征的观察 ,不同防治策略和防治方法的效果对比调查 ,结合当地影响其种群发生和为害的多个因子的综合分析认为 ,气候偏暖、粗秆品种的扩种、药剂防效的降低、螟虫繁殖力的提高及种植制度和作业方式的变更是近年二化螟种群突增和为害加重的重要诱因。并提出了“依托农业防治 ,突出科学用药”的控螟策略以及“狠治一、三代压基数 ,巧治二、四代减损失 ,重治桥梁田降低转化率”的周年全程控害对策
Through the investigation of the dynamic change of annual number of Chilo suppressalistulis in the rice planting area of Youxian in 1999, the observation of the characteristics of tropism and harm, the comparative investigation of the effects of different control strategies and methods of prevention and treatment, combined with the local influence on the occurrence and damage of their populations A comprehensive analysis of multiple factors suggests that the climate change is warmer, the expansion of coarse stalk varieties, the decrease of pesticide control efficacy, the increase of stem borer fecundity, and the change of planting system and operation mode are the sudden increase and the aggravating of the rice borer population in recent years Important incentive. And put forward the control strategy of “control stem borer relying on agricultural prevention and treatment, highlighting scientific medication” and the overall control measures for the entire year of “eliminating the loss and rehabilitating the bridges and fields and reducing the conversion rate” in the first and third generations