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豆荚螟是黄豆主要害虫。其虫体较小、为害隐蔽、钻蛀性强、来势猛。近年来随着黄豆种植面积的增大,豆荚螟的发生有逐渐加重的趋势。一般田块黄豆荚被害率为40—50％左右,严重田块高达80%以上,有的甚至被蛀成空壳,颗粒无收。防治豆荚螟在黄豆那个生育期效果最佳?对这个问题,多年来不少人认为黄豆初盛花期施药效果最好。为了验证这一效果,笔者于1978—1987年作了反复调查、试验,得出了不同的结果。
The pod borer is the main pest of soybean. Its parasites smaller, hidden harm, borers strong, the trend fierce. In recent years, with the increase of soybean planting area, the occurrence of pod borer has gradually increased. The general field of yellow pods damage rate of about 40-50%, severe field up to 80% or more, and some even moth into the shell, crop failure. Prevention and control of pod borer in the soybean that the best results of this growth period? To this issue, many people think over the years soybean flowering the best early flowering. In order to verify this effect, the author made repeated investigations and experiments in 1978-1987 and obtained different results.