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2 幼穗分化期高温下增施穗氮肥对水稻Pn和Tr的影响

Table 2 Effects of the increased panicle nitrogen application rates on Pn and Tr under high temperature treatment during panicle initiation stage

品种Variety 氮处理N treatment 温度处理Temperature treatment Pn [μmol/(m2·s)] Tr [mmol/(m2·s)] LYPJ LN CK 26.7±0.7a 7.4±0.4b HDT 26.0±0.7ab 9.6±0.3a HN CK 27.5±0.9a 6.8±0.3b HDT 23.7±0.8b 9.1±0.3a 方差分析Analysis of variance 温度 (T) * *** N处理 (N) ns ns T×N ns ns SY63 LN CK 21.7±1.1c 6.6±0.5b HDT 23.5±0.6bc 8.9±0.2a HN CK 28.2±0.8a 7.0±0.2b HDT 24.6±0.4b 9.0±0.2a 方差分析Analysis of variance 温度 (T) ns *** N处理 (N) ** ns T×N * ns