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Study on Water-demand Regularities and Water Use Efficiencies of Rice under Paper mulching

机译:覆膜水稻的需水规律和水分利用效率研究

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It is great significant for field water management of the rice to study water-demand regularities of rice under paper mulching. In order to explore the evapotranspiration characteris-tics of rice during various growing stage and analyze the regu-larities of influence on the soil water and yield of rice under pa-per mulching, a potted experiment under paper mulching was done in Shenyang, China, 2010. The results show that the water requirement of rice is attaining maximum in booting stage, and the watersaving effect of paper mulching is obvious (P< 0.05) from reviving to booting stage. Paper mulching can suppress the water leakage effectively, and its effect on soil moisture content is significant. The yield and water use efficiency of rice under paper mulching improve 6.82% and 10.91% respectively than without paper mulching. Taking good usage of controlling irrigation technology and effective utilization of agricultural water re-sources must improve water use efficiency, which will give full play roles to saving water and increasing production of paper-mulching planting technology.
机译:研究稻草覆盖下水稻的需水规律,对水稻田间水分管理具有重要意义。为了探讨水稻在不同生育时期的蒸散特性,并分析其对纸水覆盖对土壤水分和产量的影响规律,在沈阳进行了盆栽的纸膜覆盖试验。 2010年。结果表明,在孕穗期水稻需水量达到最大值,从恢复期到孕穗期覆膜节水效果明显(P <0.05)。覆膜可以有效抑制渗水,对土壤含水量的影响显着。覆膜水稻的产量和水分利用效率分别比不覆膜水稻提高6.82%和10.91%。充分利用节水灌溉技术,有效利用农业水资源,必须提高用水效率,充分发挥节水增肥的作用。

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