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- W2392118026 abstract "The objective of this study is to search after the effective rainwater-collecting methods and managed irrigation ways to increase rainwater use efficiency(RUE) and vegetable water use efficiency(WUE) in greenhouse,and further to establish the sustain technology system for the vegetable culture in greenhouse in semi-arid region.The experiment was carried out from 2001 to 2004.In the three years,the collected rainwater amounts,vegetable water consumptions,vegetable economic yields and rainfall were nonstop monitored and recorded,and the irrigation efficiency,yield and water consumption in sub-irrigation,drip irrigation under mulched plastics film,furrow irrigation under mulched plastics film and open-furrow irrigation(control) with sufficient water supply were investigated.The result showed that the rainwater-collecting coefficient is closely related to the rainfall.As the rainfall increased,the rainwater-collecting coefficient and the rainwater-collecting amount increased.The average rainwater-collecting coefficient was 64.75% over the three years;in the rainy year(2003),the rainwater-collecting coefficient was 71.25%,11.92 % higher than the average;in the drought year(2002),the rainwater-collecting coefficient was 59.33%,5.42% lower than the average.The sub-irrigation had the highest irrigation efficiency and water use efficiency,followed by the drip irrigation,and the furrow irrigation under mulched plastic film and the controls had the lowest one.The WUEs in sub-irrigation and drip irrigation separately increased by 49.41%,27.20% in cucumber(Cucumis sativus L) and 69.20%,65.34% in tomato(Lycopersicum esculentum Mill) compared with the open furrow irrigation. Plastic film mulching could save water by 27.36% in cucumber and by 26% in tomato compared with the treatment without plastic film mulching.The sub-irrigation had the highest water saving efficiency,saving water by 42.64 % in cucumber and 31.3 % in tomato compared with the controls.Mushroom(Pleurotus sajor-caju (Fr.) Sing) was the vegetable with the highest water saving efficiency and the lowest water requirement in this experiment,its saved water could be supplied to the vegetables with high water requirement,and thus maintaining the water balance and increasing the economic incomes of the greenhouse as a whole,and accordingly,the mushroom should be integrated in the rotation of vegetable planting in the greenhouse." @default.
- W2392118026 created "2016-06-24" @default.
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- W2392118026 date "2007-01-01" @default.
- W2392118026 modified "2023-09-25" @default.
- W2392118026 title "Artificial Rainwater-collecting System of Greenhouse and Managed Irrigation for Three Vegetables in Semi-arid Regions of Middle Gansu" @default.
- W2392118026 hasPublicationYear "2007" @default.
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