不同土壤水分条件下华北冬小麦基施不同氮肥的氨挥发研究

Research on the relationship of ammonia volatilization rate and fertilizer type with irrigation treatments for winter wheat in North China

研究了不同氮肥在不同水分管理下的氨挥发损失情况。在冬小麦播种施肥后的一个月时期内,对尿素一次基施、尿素50%基施、缓释肥、有机无机复合肥的氨挥发状况进行研究,实验表明,在较低水平土壤含水量条件下(20%左右),以上各处理的氨挥发分别占总施氮量的0.84%、1.08%、0.44%、1.07%;在较高水平土壤含水量条件下(>25%),以上各处理的氨挥发分别占总施氮量的0.77%、0.73%、0.70%、1.36%。

The research was for the ammonia volatilization status of different types of nitrogen fertilizers with irrigation treatments for one month after the base fertilization. The result showed that＇, for the fertilizers of urea treatment, half amount of urea, slow- released fertilizer, compound fertilizer, the amount of ammonia volatilized account for 0.84%, 1.08%, 0.44% and 1.07% of the total fertilizer under low soil water content （20%）, and 0.77%, 0.73%, 0.70% and 1.36% for high soft water content （above 25%）.