摘要
利用安徽省78个气象台站1961—2009年的气象资料和作物资料,对农田水分供需状况进行探讨。结果表明:安徽省一季稻本田生长期总需水量自北向南逐渐增加,同时降水充足,沿淮和淮河以南的绝大部分地区多数年份农田水分供给充足有余;而冬小麦全生育期需水量与一季稻相反——自北向南逐渐减少,这主要受冬半年气温、风速和相对湿度的综合影响,加之降水量普遍不足,冬小麦主产区农田水分供应不能满足小麦生长需要,尤其需水关键期的水分亏缺十分严重。
Based on the meteorological and crop data collected by the 78 meteorological stations in Anhui Province from 1961 to 2009,water demands and precipitation in the field-growth periods of single-cropping rice and winter wheat are discussed.The results indicate that the water demand of single-cropping rice during the field-growth period gradually increased from north to south,but the water supply in most areas of Yanhuai and southen Huaihe valley was sufficient in most years because of the sufficient precipitation.On the contrary,the water demand of winter wheat during the whole-growth period gradually decreased from north to south because of the comprehensive influence of temperature,wind speed and relative humidity in the winter-half-year and the precipitation was also generally insufficient.The water supply could not meet the demand of winter wheat in main production areas,and especially during the key water demand period.
出处
《气候变化研究进展》
CSCD
北大核心
2012年第3期198-204,共7页
Climate Change Research
基金
安徽省气象局重点业务建设项目"安徽省精细化农业气候区划"
2010年度国家公益性行业(气象)科研专项"淮河流域主要农作物旱涝损失精细化评估技术"(GYHY201006027)
关键词
一季稻
冬小麦
生长期
需水关键期
水分供需
single-cropping rice
winter wheat
growth period
key water demand period
water supply and demand
