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Water 2018, 10(2), 130; https://doi.org/10.3390/w10020130

Research on Validity Examination of Simulated Results of Eggplant Water Requirements with Drip Irrigation under Mulch in Sunlight Greenhouse

School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou 450045, China
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Received: 8 December 2017 / Revised: 18 January 2018 / Accepted: 23 January 2018 / Published: 31 January 2018
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Abstract

In order to explore the validity of the single and dual crop coefficient approaches in sunlight greenhouses, eggplant with drip irrigation was taken as the study object, and the crop water requirement was calculated via field experiments in a sunlight greenhouse. Results indicated that the results of the two model simulations are satisfactory. Model parameters of the single crop coefficient approach are perfect with a correlation index (R2) of 0.8374, a regression coefficient of 0.8281, an average mean absolute error of 0.2335 mm/day, an average standard error of 0.28 mm/day, a consistency index of relative unbiasedness of 0.9530, and a residual variance of 0.0785. For the dual crop coefficient approach, the model parameters had a correlation index (R2) of 0.8597, a regression coefficient of 0.8220, an average mean absolute error of 0.2196 mm/day, an average standard error of 0.27 mm/day, a consistency index of relative unbiasedness of 0.9543, and a residual variance of 0.0685. The results indicated that the dual crop coefficient model was better than the single crop coefficient model. Our research can provide some reference for the study of crop water requirements with drip irrigation under mulch in a sunlight greenhouse. View Full-Text
Keywords: sunlight greenhouse; single crop coefficient; dual crop coefficient; crop water requirement; validity examination sunlight greenhouse; single crop coefficient; dual crop coefficient; crop water requirement; validity examination
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Wang, S.; Li, B.; Gong, X. Research on Validity Examination of Simulated Results of Eggplant Water Requirements with Drip Irrigation under Mulch in Sunlight Greenhouse. Water 2018, 10, 130.

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