温室滴灌西瓜作物系数的修正及模拟研究

rop coefficient is one of the most important parameter calculated crop water requirements using the reference crop method. According to the data of vegetable water requirement experiment in installation cultivation, crop coefficients of watermelon were calculated by single coefficient approach recommended by FAO-56, and were amended by greenhouse correct coefficient. Crop coefficient was simulated by growing stage、soil surface temperature and water requirement coefficient. Results indicated that corrected crop coefficients by inside weather data such as temperature and humidity were more coincident with measured values. 3 and 2 hypo-multinomial relation between crop coefficient and growing stage、water requirement were found respectively. Ftest reaches a significance level.