干旱地区农业研究2017，Vol.35Issue(5)：79-88,10.DOI:10.7606/j.issn.1000-7601.2017.05.12
不同施肥条件下甘肃夏玉米农田灌淤土土壤氨挥发研究
The ammonia volatilization of anthropogenic-alluvial soil in summer maize farmland under different fertilization methods in Gansu Province
摘要
Abstract
The effects of different fertilization methods on the ammonia volatilization of anthropogenic-alluvial soil and maize growth and nitrogen balance were studied by intermittent closed chamber pumping method.The results showed that the ammonia volatilization of basal fertilizer and topdressing fertilizer continued for 15 days and 11 days.The accumulation of ammonia volatiles during basal fertilizer period was between 2.970 and 4.123 kg· hm-2,accounting for 0.81％ to 1.65 ％ of the total amount of fertilizer,and the accumulation of ammonia volatiles during topdressing fertilizer period was between 6.240 ～ 8.347 kg· hm-2,accounting for 3.1％ to 4.6 ％ of the amount of fertilizer applied;The loss of ammonia volatilization was lower under the condition of film and urea fertilization,and the utilization rate of nitrogen fertilizer was higher than that of conventional fertilization.The mass of 1000 grains was higher than that of conventional fertilization 3.6％ to 11.9％,and yield of maize was higher than that conventional fertilization 24.98％ to 36.73 ％;reduce the nitrogen surplus of 40.46 to 68.67 kg· hrn-2.In summary,the application of film mulching (urea deep application / surface irrigation) can reduce soil ammonia volatilization loss,promote the growth and development of summer maize and yield,increase production efficiency,decrease agricultural non-point source pollution.Therefore,film mulching will be large-scale used in anthropogenic-alluvial soil of the summer maize planting area in Gansu Province.关键词
氨挥发/灌淤土/施肥方式/夏玉米/氮素平衡Key words
ammonia volatilization/anthropogenic-alluvial soil/fertilization method/summer maize/mitrogen balance分类
农业科技引用本文复制引用
杨晓云,杨虎德..不同施肥条件下甘肃夏玉米农田灌淤土土壤氨挥发研究[J].干旱地区农业研究,2017,35(5):79-88,10.基金项目
甘肃省农业面源污染调查项目 （）
