Abstract:To understand effects of nutrient solution irrigation volume and frequency on pepper growth, fruit quality and water use efficiency, a few experiments were performed by using a commercial nutrient solution named Yangdashuai based on soilless cultivation method. In the experiments, three nutrient solution irrigation volumes were provided, namely, in seedling stage, the nutrient irrigation volumes were W1(300 mL), W2(400 mL), and W3(500 mL)per plant in every day, in blossoming period, the volumes were doubled, in fruiting stage, the volumes were tripled. Further, three solution irrigation frequencies, such as T1(2 times per day), T2(3 times per day)and T3(4 times per day), were specified, and each frequency remained through the entire pepper growth period. The results show that when the nutrient solution irrigation volume was W2, the correlation between above ground part and underground part was the best for the pepper. The water use efficiency of W1T2 treatment was the highest, 18.13 kg/m3, unfortunately the pepper yield was the lowest. The total root surface area in W3T1 treatment was the largest, 754.54 cm3. In W3T2 treatment, the pepper was subject to the best growth, namely, the tallest plant and the biggest stem diameter, excellent fruit quality and better water use efficiency. Therefore, W3T2 treatment has provided the optimal nutrient solution irrigation volume and frequency.
汪生林, 凡振伶, 高艳明, 李建设. 营养液供液量与供液频率对冬春茬辣椒的影响[J]. 排灌机械工程学报, 2018, 36(1): 69-76.
WANG Shenglin, FAN Zhenling, GAO Yanming, LI Jianshe. Effect of nutrient solution irrigation volume and frequency on winter and spring pepper under soilless cultivating conditions. Journal of Drainage and Irrigation Machinery Engin, 2018, 36(1): 69-76.
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