稻飞虱是桂林专区主要水稻害虫之一,1957和1959年都曾大面积发生为害。1965年全专区受害面积达65万亩,未經及时搶救的,一般減产1—2成,为害严重的,收成減半以上。通过对此虫的預測和大面积的防治工作,我們发現它有較强的趋稗性。而掌握这一特性,做好預测預报,对指导防治工作具有一定的实用意义。 Planthopper is one of the major rice pests in the Guilin area. Both 1957 and 1959 have been widespread damage. In 1965, the area affected by the project reached 650,000 mu. Without the timely rescue, the general reduction of 1-2% would be serious. The damage would be halved. Through the prediction of this pest and a large area of ​​prevention and control work, we found that it has a stronger tendency to attack. To master this feature and make forecasting and forecasting have certain practical significance in guiding and controlling the work.