坝上地区不同类型土地退耕还草经济效果分析
——以河北省张北试区叶家村为例
袁卉馥,张立峰
The Analysis of Economic Results of Degenerating Tillage to Grass in the
Different Types Field of BaShang Area
——Taking Yejiacun in Zhangbei County for instances
Yuan Huifu, Zhang Lifeng
中国农学通报
.
2005, (5): 433
-433
.
DOI: 10.11924/j.issn.1000-6850.0505433
