为促进农、林、牧业的全面发展,改造现有的多灾低产面貌,建立合理的农业生态系统,就必须按不同类型区,营造农田防护林。今对我省坝上高原和河北平原两个主要农业区,如何划分防护林类型区提出如下看法。 In order to promote the all-round development of agriculture, forestry and animal husbandry, transform the existing disastrous and low-yielding features and establish a reasonable agro-ecological system, we must create farmland shelterbelts according to different types of zones. Now on the Bashang Plateau and Hebei Plain, two major agricultural areas, how to divide the type of shelterbelts to put forward the following views.