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山地杨树在此特指在土层较厚且具有一定坡度的地方栽培杨树。隆化县现有适宜发展杨树的坡地约在20万亩以上,尤其是自2002年实施退耕还林项目以来,多数坡地即山地成为退耕地,对效果好的需继续巩固其成果,对效果差的可通过集中承包或联营的办法改换树种,建立山地杨树速生丰产林,以此来提高经济效益,本文仅从进一步巩固退耕还林成果与经济利用山地资源角度积极倡导山地杨树的发展,供同行讨论。
In this case, the mountainous poplar is especially cultivated for poplar where the soil layer is thick and sloped. The available slopes of poplar trees in Longhua County are about 200,000 mu or above, especially since the implementation of the project of returning farmland to forestry in 2002, most of the slopes become mountainous areas for conversion to cultivated land. For good results, it is necessary to continue to consolidate the achievements. Poor can change the tree species through the method of centralized contracting or affiliation, and establish the fast-growing and high-yield forest of mountain poplar in order to improve the economic benefits. This paper advocates the development of mountain poplar only from the perspective of further consolidating the results of the conversion of cropland to forest and the economical utilization of mountainous resources For peer discussion.