不同施药时期对小麦害虫的防效初报

小麦吸浆虫和麦蚜是小麦生产上的主要害虫,其中小麦吸浆虫发生情况在北京市大兴区成逐年上升的趋势.本试验选取常规种植的小麦田,研究不同时期防治小麦害虫,防治效果的差异,对产量的影响,选出最佳防治时期.结果表明小麦蚜虫防治在抽穗期或扬花灌浆期防治效果差异不明显,小麦吸浆虫不同防治时期,效果差异较大,在小麦抽穗期防治效果在98.00%以上,但是在开花灌浆期防治效果仅为68.97%.在小麦抽穗期防治小麦害虫产量增加107.08%,小麦抽穗期加上扬花灌浆期防治小麦害虫,产量增加153.37%.

The Spraying Different Period on Wheat Pest Control Effect for Early

Wheat suction pulp of worm and wheat aphid wheat production is the main insect pests,including wheat suction pulp insect situation happened in Beijing’s daxing district into the trend of rising year by year.This test selection of conventional planting cornfield,the different period control wheat pests,prevention effect difference,the influence of on yield,select the best control period.The results showed that wheat aphid prevention and control in the heading stage or flowering grouting phase control effect is not obvious difference,wheat suction pulp insect prevention and control of different period,the effect difference is bigger,on wheat heading stage control effect in more than 98.00%,but in the flowering grouting phase control effect is only 68.97%.The prevention and control of pests in wheat heading stage of wheat yield increased by 107.08%,wheat heading stage and filling stage of wheat flowering the prevention and control of pests,yield increased by 153.37%.