李廷轩 马国瑞 等. 紫色丘陵区县级农田养分平衡与土壤养分变化趋势研究—以四川省犍为县为例[J]. 水土保持学报, 2003,17(1):103-106.

Farmland Nutrients Balance and Dynamic Variation Tendency of Soil Nutrients on County Level in Purple Hilly Area of Qianwei County, Sichuan Province[J]. 2003, 17(1): 103-106.

李廷轩 马国瑞 等. 紫色丘陵区县级农田养分平衡与土壤养分变化趋势研究—以四川省犍为县为例[J]. 水土保持学报, 2003,17(1):103-106. DOI：

Farmland Nutrients Balance and Dynamic Variation Tendency of Soil Nutrients on County Level in Purple Hilly Area of Qianwei County, Sichuan Province[J]. 2003, 17(1): 103-106. DOI：