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采用粉碎的小麦秸秆覆盖模拟保护性耕作环境,研究土壤中施用家禽粪肥和传统的地表铺肥对粪肥中NH3挥发的影响。2008、2009两年的试验结果显示,与传统的地表铺施家禽粪肥相比,圆盘犁施肥平均减少NH3-N挥发67%,注肥器施肥平均减少NH3-N挥发88%。注肥器施用干家禽粪可以保证相当于保护性耕作条件的高地表覆盖,使粪肥中NH3损失最少,为植物生长提供更多的N素。
The milled wheat straw mulch was used to simulate the conservation tillage environment and the effect of poultry manure applied in the soil and traditional surface preparation on NH3 volatilization in manure was studied. The results of two years in 2008 and 2009 showed that compared with the traditional poultry manure application on the ground, disc plow fertilization reduced the average NH3-N volatilization by 67% and the fertilizer injection reduced the average NH3-N volatilization by 88%. The application of dry poultry manures to the fertilizers ensures high surface coverage equivalent to conservation tillage, minimizes the loss of NH3 in manure and provides more N for plant growth.