A Simple Method for Drip Irrigation Scheduling of Spinach (Spinacia oleracea L.) in a Plastic Greenhouse in the North China Plain Using a 20 Cm Standard Pan Outside the Greenhouse
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Published:2023-06-16
Issue:6
Volume:9
Page:706
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ISSN:2311-7524
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Container-title:Horticulturae
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language:en
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Short-container-title:Horticulturae
Author:
Niu Junfang1, Feng Junxia2, Liu Shengyao3, Jia Songnan3, Fan Fengcui3
Affiliation:
1. Key Laboratory of Agricultural Water Resources, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050021, China 2. School of Chemical Engineering, Shijiazhuang University, Shijiazhuang 050035, China 3. The Institute of Agricultural Information and Economics (IAIE), Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051, China
Abstract
The objective of this paper is to perform drip irrigation scheduling for spinach (Spinacia oleracea L.) in a plastic greenhouse using the standard 20 cm evaporation pan. A drip irrigation experiment with four levels of irrigation, i.e., 0.6, 0.8, 1.0, and 1.2 times the cumulative evaporation of a 20 cm standard pan (Epan) were set up. The irrigation interval was controlled using a 20 mm Epan, and optimal irrigation water amounts of 0.8 Epan and 0.6 Epan were recommended for the spring and autumn growing seasons, respectively. Overirrigation (1.2 Epan) also led to yield losses, particularly for stem growth. In addition, a proper greenhouse index, defined as the ratio of the cumulative Epan inside and outside the greenhouse, could predict the Epan inside the greenhouse using the external Epan to a high degree of accuracy (daily data with r2 = 0.85, root mean square error (RMSE = 0.68 mm d−1), for a 4-day interval with r2 = 0.95, RMSE = 1.81 mm 4 day−1, and for the entire growth period with r2 = 1.0, RMSE = 2.40 mm). A simple and low-cost greenhouse index method could be used to formulate drip irrigation schedules for spinach in low-technology plastic greenhouses using a 20 cm standard pan outside the greenhouse.
Funder
S&T Program of Hebei
Subject
Horticulture,Plant Science
Reference42 articles.
1. Spatial and temporal evolution of agricultural planting structure and crop water consumption in groundwater overdraft area;Meng;Trans. Chin. Soc. Agric. Mach.,2020 2. Effects of water and nitrogen supply on spinach (Spinacia oleracea L.) growth and soil mineral N residues;Chen;Pedosphere,2002 3. Traditional and new approaches to irrigation scheduling in vegetable crops;Pardossi;Horttechnology,2011 4. McPhee, J., Eberhard, J., Melland, A., Uddin, J., Dunn, L., Hin, S., Lim, V., Touch, V., Sisouvanh, P., and Somphou, I. (2022). Simple ETo-Based rules for irrigation scheduling by smallholder vegetable farmers in Laos and Cambodia. Water, 14. 5. Irrigation Scheduling Approaches and Applications: A Review;Gu;J. Irrig. Drain. Eng.,2020
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