增施穗氮肥缓解水稻穗分化期高温伤害的生理机制研究

闫娜, 谢可冉, 高逖, 胡秋倩, 崔克辉

Physiological Mechanism of Increased Panicle Nitrogen Fertilizer Application on Alleviating High-Temperature Damage during the Rice Panicle Initiation Stage

Yan Na, Xie Keran, Gao Ti, Hu Qiuqian, Cui Kehui

表3 幼穗分化期高温下增施穗氮肥对花前叶片和穗NSC含量和积累量的影响

Table 3 Effects of the increased panicle nitrogen application rates on NSC concentration and accumulation in leaves and panicles before flowering under high temperature treatment during panicle initiation stage

品种 Variety 氮处理 N treatment 温度处理 Temperature treatment 叶片NSC含量 Leaf CNSC (mg/g) 叶片NSC积累量（g/株） Leaf TMNSC (g/plant) 穗NSC含量 Panicle CNSC (mg/g) 穗NSC积累量（g/株） Panicle TMNSC (g/plant) LYPJ LN CK 35.5±1.0c 0.36±0.0c 259.2±13.1a 0.28±0.0a HDT 44.9±3.3ab 0.48±0.0ab 209.3±11.2c 0.10±0.0b HN CK 39.1±1.1bc 0.47±0.0b 263.5±6.3a 0.29±0.0a HDT 48.3±3.3a 0.55±0.0a 223.7±16.3b 0.10±0.0b 方差分析Analysis of variance 温度 (T) ** ** ** *** N处理 (N) ns ** ns ns T×N ns ns ns ns SY63 LN CK 44.5±2.5a 0.53±0.0b 255.5±16.4a 0.28±0.0a HDT 43.2±2.6a 0.52±0.0b 231.2±13.6a 0.21±0.0b HN CK 45.0±3.5a 0.66±0.0a 241.7±14.6a 0.23±0.0ab HDT 46.7±0.4a 0.69±0.0a 214.2±8.8a 0.19±0.0b 方差分析Analysis of variance 温度 (T) ns ns ns * N处理 (N) ns ** ns ns T×N ns ns ns ns