| Muskmelon has become a high–quailty furit in market , it has become one of the benefit and most planted furits.In order to reach the aim of high yield, high quality and saving water,when to irrigate plants according to the requirement is very important to improve yied and quality of muskmelon.This paper ,under different irrigation cycle ,study on problems of muskmelon during its growing periods,such as irrigation mode,requirement and deficiency of water,and so on.We combine the experiment and theoretic analysis.The main results show as follows:(1)In the growing time of muskmelon, Pan coefficient using T3 (Kp = 0.75) of the Irrigation ,the Index would be better.Such as Height, leaf area and so on . the result show that T3(Kp = 0.75) benefit crop growth..(2) Different Irrigation water mount affect leaf chlorophyll content, Low and high irrigation treatments could decrease the chlorophyll content; Concentration of leaf cells appeared a single peak curve trend under different irrigation treatments; T3 irrigation water amounwas smaller than T4,but Did not lead to crop water stress.(3)The dalily change on sap flow density was a typical broad peak curve in different weather condition. In sunny days ,the different irrigations melon sap flow density trends was T4> T3>T2; In ruiny days , the different irrigations melon sap flow density trends was T2>T3>T4.Due to the different weather conditions ,the peak value of different irrigations sap flow density apperenced in difference. The resut show that the maximum value of sap flow density in blossoming stage greater than furit stage.(4)Base on the quality of different irrigation, maximum yield is T3 treatment, T4 treatment isecondly, Melon production peak corresponded to the amount of irrigation is 146.36mm. To analysis the quality index , T3 treatment w components were relatively large at the same time of the fruit picking conditions...
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