Based on soil sample data in years, it is concluded that organic matter, total N, available P and rapidly available K increased compared with National Second Soil Survey. Furthermore, contents and changes of soil nutr...Based on soil sample data in years, it is concluded that organic matter, total N, available P and rapidly available K increased compared with National Second Soil Survey. Furthermore, contents and changes of soil nutrients were analyzed, and countermeasures for improving soil quality were proposed in order to protect and improve land comprehensive productivity and promote land resource sustainable use and agricultural sustainable development.展开更多
文摘Based on soil sample data in years, it is concluded that organic matter, total N, available P and rapidly available K increased compared with National Second Soil Survey. Furthermore, contents and changes of soil nutrients were analyzed, and countermeasures for improving soil quality were proposed in order to protect and improve land comprehensive productivity and promote land resource sustainable use and agricultural sustainable development.
