摘要
分析了昆明近５０ 年气候生产力变化特征以及气候变化对农业生产的影响。重点对气温、降水与小麦、水稻产量形成的关系进行了研究。结果表明：１２～２ 月的降水是小麦增减产的关键因子，≥１０ ℃的积温比降水更有利于水稻生产。同时，计算了逐年的旱涝、冷暖指数，针对制约我省农业增产的重要气象灾害的发生时期进行诊断，发现小春作物的主要气象灾害是１～２ 月的冬旱和２～４ 月的倒春寒，大春作物的主要气象灾害是５ 月干旱和７～８ 月的低温冷害。
Analysis is performed on the features of climatic productivity and the impacts of climate change air temperature and rainfall on agricultural production mainly wheat and rice in the past 50 years in Kunming.Results show that precipitation during Dec. to next Feb. is critical to wheat growth and accumulated temperature of ≥10℃ plays a more important role than rainfall for rice production.The time period when weather disasters restricting agricultural production of Yunnan Province happened is diagnosed with the aid of calculated annual dry and warm indices and it is indicated that the major weather for crops sown in late autumn are drought during Jan. to Feb. and cold from Feb. to April, and for those sown in late spring are drought in May and cold from July to August.
出处
《南京气象学院学报》
CSCD
1999年第4期671-679,共9页
Journal of Nanjing Institute of Meteorology
基金
国家"九五"重中之重科技项目
云南专题资助项目!96-908-05-08
关键词
气候变化
气候生产力
气象灾害
粮食生产
climate change
climate productivity
weather disaster
food production
