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5 水稻氮累积转运、氮素利用率和稻田氮含量与产量及产量构成因子的相关系数

Table 5 Correlation coefficients of nitrogen accumulation, translocation, nitrogen use efficiency and soil nitrogen concentration with rice yield and its yield components

指标 Index 有效穗 Effective panicle 千粒重 1000-grain weight 颖花数 Spikelets per panicle 结实率 Seed-setting rate 产量 Grain yield 分蘖期叶片氮累积 Leaf N accumulation at tillering stage 0.474** -0.336 0.463** 0.024 0.684** 分蘖期茎鞘氮累积 Stem-sheath N accumulation at tillering stage 0.518** -0.180 0.318 -0.139 0.631** 齐穗期叶片氮累积 Leaf N accumulation at heading stage 0.877** -0.511** 0.645** -0.447* 0.898** 齐穗期茎鞘氮累积 Stem-sheath N accumulation at heading stage 0.912** -0.325 0.789** -0.634** 0.897** 齐穗期穗氮累积 Panicle N accumulation at heading stage 0.542** -0.521** 0.452* 0.005 0.718** 成熟期叶片氮累积 Leaf N accumulation at maturity stage 0.959** -0.390* 0.577** -0.685** 0.836** 成熟期茎鞘氮累积 Stem-sheath N accumulation at maturity stage 0.033 -0.138 -0.595** 0.066 -0.280 成熟期穗氮累积 Panicle N accumulation at maturity stage 0.892** -0.354 0.801** -0.669** 0.877** 叶片氮转运量 Leaf N translocation 0.733** -0.534** 0.620** -0.250 0.843** 叶片氮转运率 Efficiency of leaf N translocation -0.211 -0.276 0.165 0.527** 0.114 茎鞘氮转运量 Stem-sheath N translocation 0.825** -0.262 0.869** -0.595** 0.889** 茎鞘氮转运率 Efficiency of stem-sheath N translocation 0.706** -0.290 0.891** -0.558** 0.790** 穗氮增加量 Panicle N translocation 0.868** -0.279 0.786** -0.738** 0.814** 转运氮贡献率 Contribution rate of N translocation 0.740** -0.407* 0.802** -0.391* 0.865** 叶片转运氮贡献率 Contribution rate of leaf N translocation 0.376* -0.499** 0.346 0.121 0.557** 茎鞘转运氮贡献率 Contribution rate of stem-sheath N translocation 0.780** -0.287 0.874** -0.565** 0.854** 氮回收利用率 N recovery efficiency 0.836** -0.221 0.369 0.155 0.844** 氮农学利用率 N agronomy efficiency 0.710** -0.088 0.478* -0.037 0.891** 氮偏生产力 N partial factor productivity 0.334 0.118 0.807** 0.112 0.742** 氮生理利用率 N physiological efficiency 0.288 0.075 0.401 -0.157 0.581** 成熟期稻田DTN DTN content in paddy soil at maturity stage 0.681** 0.477** -0.028 0.649** -0.364* 成熟期稻田NH4+ NH4+ content in paddy soil at maturity stage -0.494** -0.404* 0.443* -0.546** 0.219 成熟期稻田NO3- NO3- content in paddy soil at maturity stage 0.472** 0.382* 0.255 0.314 -0.386*