缺水山地果园病虫的防治王郁民农药加水稀释后喷雾的扩散性和附着性都比较好，药效期也较长，但费工且受水源的限制。缺水山地果园病虫害的防治应选用以下几种方法。１、涂药环刮去树干上的老翘皮，涂抹宽约１０厘米的药环，药剂选用４０％乐果（或氧化乐果）乳油兑水１～... Prevention and control of pest and disease in orchards orchards Wang Yumin Spraying of pesticides diluted with water is better in diffusibility and adhesion, and the expiration date is also longer, but it is also laborious and limited by water sources. Water mountain orchard pest control should use the following methods. 1, the coating ring scrape off the old tree on the warped, smear the drug ring about 10 cm wide, 40% dimethoate drug (or omethoate) EC 1 ...