Effect of different drip irrigation threshold on water use and biomass of melon in solar greenhouse
Niu Yong1,2, Liu Honglu3,4, Wu Wenyong3,4, Zhang Baolong5, Wang Kewu6
1.College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China; 2.Key Laboratory of Soil and Water Conservation & Desertification Combating of Ministry of Education, Beijing 100083, China; 3.Beijing Hydraulic Research Institute, Beijing 100044, China; 4.Beijing Engineering Technique Research Center for Exploration and Utilization of Non-Conventional Water Resources and Water Use Efficiency, Beijing 100044, China; 5.Beijing Changping District Water Authority, Beijing 102200, China; 6.Beijing Plant Protection Station, Beijing 100029, China
Abstract:In order to explore appropriate irrigation mode of melon, effect of drip irrigation with diffe-rent irrigation threshold on water utilization and biomass of melon in greenhouse were investigated. The low irrigation threshold was designed based on the proportion of irrigating substrate moisture content with the substrate feild capacity(FC), and treatments including 90% of FC(T1), 75% of FC(T2)and 60% of FC(T3). Results show that the lower irrigation threshold is good at increasing leaf area and stem diameter, but the plant height is not sensitive with it. The yield of T2 is the highest followed by T3 and T1. The root is distributed in a circle with a radius of 20 cm in the horizontal direction, and is distributed in the depth of 40 cm in the vertical direction. The water use efficiency(WUE)of T3 is the highest followed by T1 and T2. The highly efficient irrigation schedule is made with the value of crop factor(Kc)in different periods are 1.81, 1.61, 2.21 and 2.19.
牛勇,, 刘洪禄,, 吴文勇,, 张宝龙, 王克武. 灌水下限对甜瓜生长及水分利用效率的影响[J]. 排灌机械工程学报, 2013, 31(10): 901-906.
Niu Yong,, Liu Honglu,, Wu Wenyong,, Zhang Baolong, Wang Kewu. Effect of different drip irrigation threshold on water use and biomass of melon in solar greenhouse. Journal of Drainage and Irrigation Machinery Engin, 2013, 31(10): 901-906.
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