摘要
采用磷酸甘油-双层海绵通气法对旱地苹果产区不同有机肥和化肥配施下的氨挥发进行了研究。结果表明,不同有机肥和化肥配施显著影响了氨挥发速率和损失量。各处理氨挥发速率峰值大小和出现时间存在差异,纯化肥(100%N)处理峰值最高,达2.07kg N/(hm2.d),而纯有机肥(100%Y)处理峰值出现时间最早。氨挥发损失量以100%N处理为最大,达10.39kg N/hm2,占施氮量的3.46%,显著高于其它处理;50%N+50%Y处理氨挥发损失量和占施氮量的比例均为最低。有机无机肥配施可以有效减少氨挥发损失,以有机肥和化肥各半最好。
An experiment including six treatments,i.e.100%N,75%N＋25%Y,50%N＋50%Y,25%N＋75%Y and 100%Y,was used to monitor ammonia volatilization using a venting method in upland apple orchard.The ammonia volatilization rate and losses amount were dramatically influenced by different fertilization cooperation.There were significant differences in the amount and appeared time about the peak of ammonia volatilization rate among different treatments,the peak appeared time in 100%Y was the earliest,the biggest peak of ammonia volatilization rate（2.07 kg N/（hm^2·d）） was in 100% N.The highest gross amount of ammonia volatilization was in 100%N,reaching to 13.46 kg N/hm^2,accounted for 3.46% of the N applied and was significantly higher than the values in other treatments;Both the gross amount of ammonia volatilization and the proportion of fertilizer application lost of applied N were lowest in 50%N＋50%Y.Our study indicates that combination application of chemical fertilizer and organic manure could lower ammonia volatilization.
出处
《水土保持学报》
CSCD
北大核心
2010年第5期199-203,共5页
Journal of Soil and Water Conservation
基金
现代苹果产业技术体系(MATS)
农业部行业计划项目(nyhyzx07-024200803030)
山东省农业重大应用创新课题
关键词
旱地苹果园
化肥
有机肥
氨挥发
upland apple orchard
chemical fertilization
organic manure
ammonia volatilization
