Soil fertility and mineral N accumulation of slope apple orchard on the Loess Plateau are studied. Results show that soil appears low-fertility due to the serious lack of N and P. Soil is sandy loam, with better soil aeration and poor water and nutrient retention. Fertility status of slope apple orchard on the Loess Plateau is low on the whole. The content of soil nutrients of the 0—60 cm soil layer is as follows: organic matter is 9.24~28.12 g/kg; total N is 0.22~0.60 g/kg; available P is 0.17~16.08 mg/kg;...
修改评论