苹果树山楂红蜘蛛的防治一、人工防治１．树干缠草。危害苹果大树的山楂红蜘蛛，一般从每年的８份开始陆续回到树干的老翘皮下潜伏越冬。根据这一特性，可于８月上旬以前，收集园边杂草织成草绳，从树干基部，一圈挨一圈一直缠到主枝分权处以上，诱集其在草绳中越冬。次年... Apple tree hawthorn red spider prevention and control, artificial prevention 1. Trunk wrapped in grass. Hawthorn red apple spider harm the apple tree, usually from the beginning of each of the eight gradually returned to the trunk of the old Alice lurking overwintering. According to this feature, before the first ten days of August, garden weeds can be collected and weaved into grass ropes. From the base of the tree trunk, one circle lapped around the main branch to cover the branches and trapped it for wintering in grass ropes. The following year ...