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| Evaluation of irrigation scheme with high quality and efficiency for greenhouse grown tomato |
| Liu Hao, Duan Aiwang, Sun Jingsheng, Ning Huifeng, Wang Feng |
| Key Laboratory of Crop Water Use and Regulation, Ministry of Agriculture, Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang, Henan 453002, China |
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Abstract This study was conducted to find an irrigation scheme for greenhouse grown tomato with high quality and efficiency based on evaporation determination from a 20 cm standard diameter pan placed above the crop canopy. Three irrigation intervals based on accumulate pan evaporation(Epan)values and four irrigation level combination treatments were designed. By means of results of plot experiment in greenhouse, the evaluation system of irrigation scheme with water saving and good quality for greenhouse grown tomato was determined by five main indexes such as tomato yield, water use efficiency, mean fruit weight, content of soluble solids and fruit firmness. Based on the weight of each index calculated by varia-tion coefficient method, a comprehensive evaluation model with high quality, yield and efficiency was further established with TOPSIS method. Using the evaluation model, irrigation scheme with water sa-ving and good quality was determined based on pan evaporation. Irrigation was occurred when Epan reached 10 mm±2 mm with 0.9 Epan irrigation water applied, which could improve water utilization efficiency, fruit nutritional and storage quality in some certain extent without yield reduction.
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Received: 05 January 2013
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