食心虫种类多,出土时间不同,幼虫钻入果内时间也不同,这就给防治造成困难,成为果树生产中的一大危害。根据各地食心虫出土的时间,可采用提前1个月用地膜覆盖树的办法防治食心虫。在内蒙古地区一般在4月中旬覆膜。具体方法是:按树冠大小确定地膜大小,采用正方 There are many kinds of moth worms and unearthed time, and larvae are different in the time of drilling into the fruit, which makes prevention and treatment difficult and becomes a major hazard in the production of fruit trees. According to the time of unearthed moth worms, one month in advance can be used to cover mulching trees with mulberry worm control. In Inner Mongolia generally in mid-April coated. The specific method is: Determine the size of the plastic film by crown, using square