早春期间，气温仍然偏低，各种林木害虫活动量较小，且都有相对固定的冬眠场所。此时若采用有效防治措施，有起到事半功倍的效果。具体可取用以下四法灭虫：引诱灭虫法　　利用害虫下树冬眠的习性，可在树干上捆绑草把，引诱其到草内越冬，然后解下草把集中浇毁。对于松毛虫等? During early spring, the temperature is still low, a variety of forest pests less active, and have a relatively fixed place for hibernation. At this point if the effective prevention and treatment measures, have played a multiplier effect. Specifically desirable to use the following four methods of pest control: lure pest control pests use the habit of hibernation under the tree trunk can be bundled grass, lure it into the grass winter, and then relieve the grass to focus pouring. For pine caterpillars?