不同灌溉和施肥模式对水稻产量、氮利用和稻田氮转化特征的影响

曹小闯,吴龙龙,朱春权,朱练峰,孔亚丽,陆若辉,孔海民,胡兆平,戴锋,张均华,金千瑜

Effects of Different Irrigation and Nitrogen Application Regimes on the Yield, Nitrogen Utilization of Rice and Nitrogen Transformation in Paddy Soil

CAO XiaoChuang,WU LongLong,ZHU ChunQuan,ZHU LianFeng,KONG YaLi,LU RuoHui,KONG HaiMin,HU ZhaoPing,DAI Feng,ZHANG JunHua,JIN QianYu

表4 不同处理水稻氮素利用率指标

Table 4 Nitrogen use efficiency of rice in different treatments

处理Treatment 氮回收利用率 Nitrogen recovery efficiency (%) 氮农学利用率 Nitrogen agronomy efficiency (kg·kg-1) 氮生理利用率 Nitrogen physiological efficiency (kg·kg-1) 氮偏生产力 Nitrogen partial factor productivity (kg·kg-1) 氮肥类型 N 灌溉模式 W N0 FI — — — — AWD — — — — PUN100 FI 37.8±0.8cd 8.4±0.7de 22.6±3.1c 44.8±0.7f AWD 42.6±0.2bc 10.0±0.6d 23.5±1.3c 49.6±0.6e PUN80 FI 23.9±1.4e 7.8±0.3e 33.3±3.2b 53.4±0.3d AWD 34.5±1.2d 7.1±0.9e 20.8±3.4c 56.5±0.9c CRFN80-BC FI 38.6±2.4cd 13.3±0.8c 34.6±0.2ab 58.9±0.8c AWD 47.0±0.5b 16.5±0.6b 35.0±1.3ab 65.9±0.6b SFN80-BC FI 46.9±2.3b 15.2±0.3bc 32.5±0.9b 60.7±0.3b AWD 53.6±3.1a 19.4±0.8a 42.2±3.9a 68.8±0.8a F值 F value W 33.4** 19.4** 154.0** 0.04ns N 43.6** 99.8** 292.1** 14.0** W×N 0.9ns 5.3* 5.8** 6.6**