中国生态农业学报（中英文）2024，Vol.32Issue(5)：780-789,10.DOI:10.12357/cjea.20230594
不同氮肥类型对稻-油轮作氨挥发和氮肥利用率的影响
Effects of different nitrogen fertilizer types on ammonia volatilization and nitro-gen use efficiency of rice-oilseed rape rotation systems
摘要
Abstract
The rice-oilseed rape rotation is one of the main rotational patterns in China.However,excessive nitrogen fertilizer applic-ation reduces nitrogen use efficiency and causes nitrogen loss during rotation.In this study,a field experiment with a randomized block design was conducted to investigate the effects of different nitrogen fertilizer types on ammonia volatilization and nitrogen use efficiency during rice-oilseed rape rotation.Five treatments were applied:urea(UF),slow-release fertilizer+urea(SF),urea+nitri-fication inhibitor+urease inhibitor(DF),biochar+urea(BF),and no nitrogen fertilizer(CK).The results showed that the nitrogen fertilizer type significantly affected NH3 volatilization,nitrogen use efficiency,and grain yield.1)Ammonia volatilization was higher during the rice season than during the oilseed rape season.Compared with the CK,the UF,SF,DF,and BF treatments significantly increased the annual NH3 volatilization by 1.6,1.0,1.1,and 0.8 times,respectively.Moreover,compared with the UF,the SF,DF,and BF treatments significantly reduced the annual cumulative NH3 volatilization by 20.5％,19.7％,and 30.9％,respectively.2)Com-pared with the UF,the SF,DF,and BF treatments increased the nitrogen recovery efficiency by 27.9％,10.3％,and 19.3％in the oil-seed rape season and by 49.3％,32.8％,and 41.5％in the rice season,respectively.3)Compared with the UF,the SF,DF,and BF treatments increased the oilseed rape yield by 6.7％,2.8％,and 4.3％,and the rice yield by 36.7％,14.0％,and 23.4％,respectively.Compared with the UF,the SF treatment significantly increased the economic benefit in the oilseed rape season by 24.3％,whereas the SF,DF,and BF treatments increased the economic benefit in the rice season by 70.7％,21.1％,and 1.1％,respectively,with the highest economic benefit observed in the SF treatment.The results of this study show that slow-release fertilizer plus urea is an eco-nomic and ecological fertilization mode for reducing the NH3 volatilization loss of rice-oilseed rape rotation and improving nitrogen recovery efficiency,yield,and economic benefits.关键词
水稻-油菜轮作/缓释肥/氨挥发/氮肥利用率/经济效益Key words
Rice-oilseed rape rotation systems/Slow-release fertilizer/Ammonia volatilization/Nitrogen recovery efficiency/Eco-nomic benefit分类
农业科技引用本文复制引用
饶怡晴,岳子钦,汪金平,李成芳..不同氮肥类型对稻-油轮作氨挥发和氮肥利用率的影响[J].中国生态农业学报（中英文）,2024,32(5):780-789,10.基金项目
国家重点研发计划项目(2022YFD2301405)资助 This study was supported by the National Key Research and Development Program of China(2022YFD2301405). （2022YFD2301405）
