灌溉排水学报2023，Vol.42Issue(12)：22-27,6.DOI:10.13522/j.cnki.ggps.2023185
设施滴灌土壤水分调控对水果萝卜生长和产量的影响
Effects of Soil Water Regulation on Growth and Yield of Fruit Radish under Drip Irrigation in Greenhouse
摘要
Abstract
[Objective]The fruit radish is a cash crop commonly cultivated in greenhouses in central and northern China.This study aims to determine the most effective drip irrigation schedule to enhance its yield while simultaneously increasing water use efficiency.[Method]The cultivar"Ice Cream"was used as the model plant.The irrigation was based on soil matric potential measured at the depth of 20 cm in that whenever it dropped to-10(Tl),-20(T2),-30(T3),-40(T4)or-50 kPa(T5),we irrigated the crops by 10 mm of water.In each treatment,we measured thegrowth,yield and quality,as well as irrigation water use efficiency(IWUE)of the crop.[Result]The total irrigation amount for T1-T5 decreased from 120 to 70 mm.Reducing the soil matric potential threshold for irrigation resulted in reductions in area and fresh weight of leaves,root diameter and length,and weight of the radish,albeit the reduction in root length was not significant.Compared with T1,T2-T5 increased the yield by 2.2％ to 44.0％,T2 increased IWUE by 17.3％,and T3-T5 reduced IWUE by 4.1％ to 6.6％.With the decrease in the soil matric potential threshold,the soluble solid content and electrical conductivity of the radish both increased first followed by a decline,the soluble solid content peaked in T2 and Vc content increased monotonically.[Conclusion]Setting soil matric potential at depth of 20 cm at-20 kPa as the threshold and the irrigating 10 mm of water each time is optimal for improving the yield and IWUE of greenhouse fruit radish.关键词
灌溉制度/滴灌/萝卜/产量/灌溉水利用效率Key words
irrigation system/drip irrigation/radish/yield/irrigation water use efficiency分类
农业科技引用本文复制引用
陈柯,刘文欣,冯棣,祝海燕,张敬敏,桑晓明,丁发强,孙小桉..设施滴灌土壤水分调控对水果萝卜生长和产量的影响[J].灌溉排水学报,2023,42(12):22-27,6.基金项目
山东省自然科学基金面上项目(ZR2021ME154) （ZR2021ME154）
潍坊科技学院校级课题(2022XJSK06) （2022XJSK06）
