土壤学报2018，Vol.55Issue(3)：754-763,10.DOI:10.11766/trxb201711240476
不同生育期增温对水稻产量及氮、磷含量的影响
Effects of Warming at Different Growth Stages on Rice Yield and Nitrogen and Phosphorus Contents
摘要
Abstract
[Objective]Human activities have caused global warming. So it is essential to get to know how warming affects rice yield and contents of nitrogen (N) and phosphorus (P) in rice, which may provide a certain basis for prediction of yield and quality of rice grains in future climate conditions.[Method]In the present study, rice cultivars of Tairuifeng 5 and Zhendao 16 were planted in pots, which were placed into a growth chamber with controlled temperature, 5℃ higher than the air temperature outside for 7 days, at their tillering stage, booting stage, heading stage, flowering stage and filling stage, separately. Then effects of warming at different growth stages on rice yield and content of N and P in the plant were analysed. [Result]Results show that warming at different growth stages affected significantly yield compositions of rice, with the warming at the booting stage and heading stage being the highest in the effect. The plants of Tairuifeng 5 and Zhendao 16 treated with warming at the booting stage were the lowest in number of grains, seed setting rate and grain weight. On the whole, warming at different growth stages increased significantly nitrogen content in stem, leaf, husk and grain of Tairuifeng 5 and Zhendao 16 (p<0.05). The effect of warming on P content depended on duration of the warming and rice cultivar. Compared with the control, Tairuifeng 5 treated with warming at the tillering stage, heading stage, flowering stage or filling stage was significantly lower in nitrogen harvest index, while Zhendao 16 treated with warming at the heading stage was. Compared with the control, Tairuifeng 5 treated with warming at the heading stage and filling stage significantly was significantly lower in phosphorus harvest index, while Zhendao 16 treated with warming at the tillering stage and heading stage was. [Conclusion]All the findings in the present study show that the booting stage and heading stage are the critical periods when warming affects rice yield and uptake of nitrogen and phosphorus.关键词
水稻/温度/产量/氮收获指数/磷收获指数Key words
Rice/ Temperature/ Yield/ Nitrogen harvest index/ Phosphorus harvest index分类
农业科技引用本文复制引用
常少燕,李仁英,谢晓金,徐向华,张婍,杨健伟,刘煜椿..不同生育期增温对水稻产量及氮、磷含量的影响[J].土壤学报,2018,55(3):754-763,10.基金项目
江苏省自然科学基金项目(BK20141479)、国家自然科学基金项目(41001190,41671318)和国家水体污染控制与治理科技重大专项(2015ZX07204-002)共同资助Supported by the Natural Science Foundation of Jiangsu Province in China (No. BK20141479),the National Natural Science Foundation of China (Nos.41001190 and 41671318) and the National Major Science and Technology Program for Water Pollution Control and Treatment of China (No. 2015ZX07204-002) （BK20141479）
