近年来,一些水果产区纷纷采取药液环扎法来防治果树害虫,取得了理想的效果,但要注意以下事项: 1、环扎时期 以防虫为主的,一般不受季节影响,但要掌握在关键时期或虫害大发生之前一个星期处理最为理想。如防治蚧壳虫,应在成虫羽化前;防治红蜘蛛,可在各次梢即将老 In recent years, some fruit producing areas have adopted the liquid cerclage method to prevent and control fruit pests and achieved the desired results. However, the following should be paid attention to: 1. Insect-killing during cerclage is generally not affected by the seasons, but to It is best to handle one week before the critical period or pest occurs. Such as the prevention and control scale insects, insects should be before the emergence of; control spider mite,