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利用非称量式渗漏型蒸渗仪对西瓜、白兰瓜全生育期的蒸腾蒸发耗水量做了系统全面研究，结果表明，西瓜、白兰瓜的蒸腾蒸发量均为４００～５００ｍ３／亩，比传统的灌溉量低１倍左右。白兰瓜叶面积指数是西瓜的３倍左右，但西瓜的蒸腾强度是白兰瓜的３倍左右。在一个生长季内，叶面积指数与蒸腾强度分别遵循一定的变化规律；西瓜、白兰瓜的蒸腾量及其变化过程较严格地依赖于叶面积指数和蒸腾强度；而且蒸腾量与生育期时间之间存在着函数关系：Ｅｔ＝∫ｂａｙｙ′ｄｘ；滴灌与沟灌相比，滴灌的水利用效率和产量均高于沟灌
The results showed that the transpirational evaporation amounts of watermelon and white melon were both 400 ~ 500m3 / mu, which was higher than that of watermelon and white melon Traditional irrigation is about 1 times lower. Brandou melon leaf area index is about three times the watermelon, but the watermelon transpiration intensity is about 3 times the white melon. In a growing season, leaf area index and transpiration intensity follow certain rules. The transpiration rate and its variation of watermelon and white melon depend on the leaf area index and transpiration intensity more strictly. And the transpiration rate and growth period There is a functional relationship between: Et = ∫ bayy’dx; drip irrigation compared with furrow irrigation, drip irrigation water use efficiency and yield were higher than furrow irrigation