Nguyễn Ngọc Nông (trang 117-122)
Từ khoá: đặc điểm, dinh dưỡng, sử dụng, phân bón, đất dốc, thung lũng, miền núi phía Bắc
Chemical characteristics of colluvial soils in northern mountainous region and rational using of fertilizer
Characteristics of this soil are acid and imbalance of nitrogen and phosphorus. Only phosphorus is clearly effected on less fertile colluvial soils. But on barren land the effect of nitrogen, phosphorus and potassium is clear. It should select the suitable form of phosphorous fertilizer for each type of soils. If the soils are acid, it’d better to use magnesium phosphate. It should pay attention on using phosphorus ad balanced NPK.