为了引进抗天牛树种，调整农田林网树种单一、病虫危害严重的不合理结构，巴盟从!“”#年起连续$年开展了引进河北杨接穗嫁接群众杨的试验，经过几年的试验。总结此法切实可行，对开展河北杨育苗是一项重要的技术措施，可以广泛应用。选择土层深厚、肥力高、含盐量在%’(以下，灌 In order to introduce anti-day bovine species, adjust the single species of farmland forest nets, pests and diseases of serious unreasonable structure, from the beginning of the year ! " # Years to carry out the introduction of Hebei Yang scion grafted poplar test, A few years of experiment. This method is concluded that this method is practicable, and it is an important technical measure to carry out seedling raising in Hebei. It can be widely used. Choose deep soil, high fertility, salt content% ’(below, irrigation