灌溉排水学报2011，Vol.30Issue(1)：24-28,5.
气候变化对长江流域早稻灌溉需水量的影响
Effects of Climate Change on Irrigation Water Requirement of Early Rice in the Yangtze River Basin
摘要
Abstract
Effect of climate change on irrigation water requirement of early rice was analyzed based on observation data from 1961 to 2003 in 35 meteorological stations in the Yangtze river basin. The results showed that water requirement and irrigation water demand of early rice had a decreasing trend in the most areas of the Yangtze river basin. Water requirement and irrigation water demgnd were negatively correlated with annual rainfall and daily mean relative humidity during the growing period of early rice, but positively correlated with daily mean temperature, daily mean wind speed and annual sunlight hours. There was a significantly negative correlation among irrigation water requirement, annual precipitation and daily mean relative humidity. The influence capacity of weather factors on water requirement of early rice was annual sunlight hours, daily mean temperature, daily mean relative humidity, annual precipitation, daily average wind speed, and the influence order of weather factors on irrigation water requirement of early rice was annual precipitation, daily mean relative humidity, annual sunlight hours, daily mean temperature, daily average wind speed.关键词
早稻/需水量/灌溉需水量/气候变化Key words
early rice/ crop water requirement/ irrigation water requirement/ climate change分类
农业科技引用本文复制引用
宋妮,孙景生,王景雷,陈智芳,刘祖贵..气候变化对长江流域早稻灌溉需水量的影响[J].灌溉排水学报,2011,30(1):24-28,5.基金项目
基本科研业务费专项(0032011025) （0032011025）
国家自然科学基金(51079154) （51079154）
