Negative-pressure irrigation improves water and fertilizer use efficiencies and fruit yield of greenhouse tomato on the North China Plain*
文献类型： 外文期刊
作者： Li, Yinkun 1 ; Xue, Xuzhang 1 ; Xu, Fan 1 ; Guo, Wenzhong 1 ; Duan, Minjie 2 ; Lin, Sen 1 ; Li, Youli 1 ; Wang, Zhan 1 ;
作者机构： 1.Beijing Acad Agr & Forestry Sci, Beijing Res Ctr Intelligent Equipment Agr, 11 Shuguang Huayuan Middle Rd, Beijing 100097, Peoples R China
2.Beijing Inst Landscape Architecture, A7 Huajiadi, Beijing 100102, Peoples R China
3.Beijing Key Lab Ecol Funct Assessment & Regulat T, Beijing, Peoples R China
关键词： drip irrigation; fruit yield; greenhouse tomato; negative‐ pressure irrigation; water and fertilizer use efficiencies
期刊名称：IRRIGATION AND DRAINAGE （ 影响因子：1.202； 五年影响因子：1.222 ）
ISSN： 1531-0353
年卷期：
页码：
收录情况： SCI
摘要： Water and fertilizer supply are the main factors limiting greenhouse vegetable production on the North China Plain. This study tested the hypothesis that negative-pressure irrigation is advantageous for reducing water and fertilizer application compared with drip irrigation in a greenhouse. Three treatments (drip irrigation + optimal fertilizer [DOF], drip irrigation + Yamazaki tomato nutrient solution [DNS], and negative-pressure irrigation + Yamazaki tomato nutrient solution [NNS]) were applied in a greenhouse tomato double-cropping system conducted in consecutive spring-summer and autumn-winter seasons. Soil moisture content, nitrate-nitrogen (N) concentration, fruit yield, total N uptake (N-u), irrigation water productivity, and partial factor productivity of applied fertilizer were analysed. The seasonal variation of soil moisture and nitrate-N contents in the 0-20-cm soil layer for NNS treatment was stable. Nitrate-N accumulated after the final harvest in the autumn-winter season of NNS treatment was significantly less than under DOF and DNS. Despite lower water and nutrient inputs, NNS showed higher N-u and fruit yield than DOF and DNS. These results demonstrated that negative-pressure irrigation can reduce irrigation water and nutrient inputs and nitrate-N accumulation in the soil, and significantly improve water and fertilizer use efficiency in greenhouse-grown tomato compared with those under drip irrigation.
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