摘要
蒸发蒸腾量是水利工程规划设计、水资源规划和农田灌溉用水管理的重要依据。以江西省长系列灌溉试验资料为基础,结合分析计算方法,以50%水文频率年水稻蒸发蒸腾量为代表,分析了江西省水稻蒸发蒸腾量空间分布规律及原因,采用网格无关法进行等值线图绘制。结果表明,早、晚稻全生育期蒸发蒸腾量差异较大,晚稻明显高于早稻,幅度达33.8%;早稻高海拔山区蒸发蒸腾量较低,但赣中、赣南一带蒸发蒸腾量总体较高;晚稻同样高海拔山区蒸发蒸腾量较低,但高值区分布比较分散,赣北、赣中、赣南均有部分区域;水稻蒸发蒸腾量与海拔高度及年平均降雨量呈负相关,与生育期内参考作物蒸发蒸腾量呈现正相关。
The evapotranspiration is the important evidence of the hydraulic engineering design,water resources planning and farmland irrigation water management.Based on the the long series test data of irrigation in jiangxi and combined with the analysis and calculation methods,the spatiotemporal distribution and reasons of evapotranspiration of rice in jiangxi was analyzed in hydrological years of 50%through the charting method of isoline map by using the grid method has nothing to do.The results indicated that the evapotranspiration of whole growth period in the frequency years of 50% had great difference,the late rice was higher than early rice by33.80%;the evapotranspiration of early rice in high altitude mountainous area was lower,but it was higher in Middle and Southern Jiangxi;the evapotranspiration of late rice in high altitude mountainous area was lower too,but the distribution of high value area was more dispersed,including same areas in middle and southern Jiangxi;the evapotranspiration of rice was negative correlation with high altitude and annual rainfall,and it was positive correlation with the reference crop evapotranspiration in the growing period.
出处
《中国农村水利水电》
北大核心
2016年第3期31-33,共3页
China Rural Water and Hydropower
基金
江西省水利科技重大项目(KT201319)
关键词
水稻
蒸发蒸腾量
空间变异
等值线
rice
evapotranspiration
spatial variability
isoline
