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

图1 水稻各生育期茎鞘、叶片和穗部氮含量 N0,空白对照;PUN100,常规施氮;PUN80,减氮20%;CRFN80-BC,缓控释肥减氮20%+生物炭;SFN80-BC,稳定性复合肥减氮20%+生物炭。FI,常规淹灌;AWD,干湿交替灌溉。图中不同处理数据后不同字母表示有显著性差异（P<0.05）。下同

Fig. 1 Nitrogen contents in steam-sheaths, leaves and panicles of rice at different growth stages N0: Zero nitrogen; PUN100:Traditional nitrogen level; PUN80: 80% of traditional nitrogen level; CRFN80-BC: 80% of control-released fertilizer-nitrogen (CRF-N) plus biochar; SFN80-BC: 80% of stable fertilizer-nitrogen (SF-N) plus biochar. FI: Flood irrigation; AWD: Alternate wet and dry irrigation. Bars marked with the different letters indicate significant difference at P<0.05. The same as below