论文部分内容阅读
上海郊区三麦的主要病虫害有“二虫一病”,即蚜虫、粘虫和赤霉病。实践证明,积极开展群测群防工作,做到情况明、打得准,可以减轻病虫为害的损失。一、麦蚜:主要在春季盛发为害,轻则影响三麦结实和粒重,重则全株枯死;此外,蚜虫还会传播病毒。1963年,我县有近万亩三麦,因遭蚜虫为害而抽不出穗,小虫成大灾,教训十分深刻。如何开展群众性的预测来指导防治呢?
The main pests and diseases of Sanmai in the suburbs of Shanghai are “a bug, a disease,” aphids, armyworms and scab. Practice has proved that actively carry out mass group prevention work, so that the situation clear, play accurate, you can reduce pests damage. A wheat aphid: Sheng flourish mainly in the spring, ranging from three wheat strong impact and grain weight, weight is dead; in addition, aphids will spread the virus. In 1963, there were nearly 10,000 mu of Sanmai in our county. Because of aphid infestation, no spikes were found and the bugs became a catastrophe. The lesson was very profound. How to carry out mass prediction to guide the prevention?