【摘要】 通过棉花有机—无机长效复混肥的田间试验 ,分析了土壤氮磷钾养分在不同土层中的分布状况 ,论述了棉花有机—无机长效复混肥对新疆策勒地区土壤肥力的影响 ,并对棉花各生育时期土壤中氮磷钾养分的变化做了进一步探讨。更多还原

【Abstract】 Bases on the experiments of the long effective organic-inorganic compound fertilizer in a large cotton field, this paper analyzes the nutrient distribution of nitrogen, phosphorus and potassium in the different soil depths, discusses the effect of the fertilizer on soil fertility, and investigates the nutrient change of nitrogen, phosphorus and potassium in the soil of cotton field during the growth period of cotton. The results show that the long effective organic-inorganic compound fertilizer can satisfy the demand of cotton growth to the nutrient of nitrogen, phosphorus and potassium. The volatilization and permeation of N-nutrient can be effectively reduced because the N-nutrient of the long effective organic-inorganic compound fertilizer releases into soil and is assimilated by cotton trunks slowly. Thus, the utilization efficiency of N-nutrient is raised and the pollution to soil environment is reduced, which are advantageous for the sustainable development of cotton growing. The long effective organic-inorganic compound fertilizer can also provide more effective phosphorus and quick-acting potassium for cotton growth.更多还原