河北平原山前地区土壤氨挥发测定试验研究

Determination of Volatilization of Ammonia from Soils at the Piedmont Area, Heibei Plain

利用野外现场采样及室内测试方法,研究了河北平原山前地区土壤的田间氮肥氨挥发规律。结果表明,该地区麦田、玉米田不同时期施碳铵化肥后30d,氨挥发量为17.0%—75%。氨的挥发强度受多种因素影响,采用深施、混施方法可明显减少氨的挥发。

Influence from increasing applied amount of chemical fertilizers on the environment is growing serious in development of agriculture production. We did a research on processes of cycling and transformation of nitrogen in soils with agriculture plants at the piedmont area in Hebei Plain to understand the utilization rate of nitrogen fertilizer by plant, loss amount of nitrogen fertilizer and the degree of pollution on the environment. The study approach and method were raised for reasonable utilization of nitrogen fertilizer, prevention of nitrogen fertilizer from the loss of ammonia volatilization, higher utilization rate of nitrogen fertilizers and protection of the agricultural environment.