The physio-ecological significance of night temperature and its management in agriculture under the climate change

探讨了气候变化条件下夜间温度的生理生态意义及其在农业生产中的管理，并从可持续性和效益性的角度提出了夜间温度管理的新方法。通过对呼吸作用的依赖性，定量分析了夜温对蔬菜根系吸收功能和向果实转运的影响。在此基础上，分析了茶树叶片的热平衡，以及茶树叶片的抗冻温度与夜温、抗冻相容性溶质浓度的关系。在此基础上，提出了基于向果实内迁移的节能夜温管理、应用土壤恒温层的节能局部温度管理和有效的防冻措施。

The physio-ecological significance of night temperature and its management in agriculture under the climate change was examined, and new methods for the night temperature management were proposed from the view point of sustainability and profitability. Effects of the night temperature on root absorptive function of vegetables and on translocation into fruits were analyzed quantitatively through their dependences on respiration. Furthermore, for the frost protection of tea, the leaf heat balance and the relationship of the frost tolerance temperature of tea leaves with the experienced night temperature and the concentrations of compatible solutes for frost tolerance was analyzed. From these results, an energy-saving night temperature management based on the translocation into fruits, an energy-saving local temperature management applying the constant soil temperature layer and an effective frost protection method were proposed.