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首页> 外文会议>Congress of Asia and Pacific Division of International Association of Hydraulic Engineering and Research >STUDY ON POLLUTION DEDUCTION AND ENVIRONMENTAL IMPACT OF WATER-SAVING IRRIGATION FOR PADDY FIELDS
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STUDY ON POLLUTION DEDUCTION AND ENVIRONMENTAL IMPACT OF WATER-SAVING IRRIGATION FOR PADDY FIELDS

机译：稻田节水灌溉的污染扣除与环境影响研究

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摘要

Paddy is one of the most important grain crops in China. Paddy field irrigation takes up the main part of agricultural water use in southern China. Meanwhile, drainage water from paddy fields has been the principal non-point agricultural pollution source. Different irrigation mode needs different quantity of irrigation water, while drains different load of pollutants in different procedures.Comparative tests of water-saving irrigation and the traditional flooding irrigation were carried out in two irrigation test stations in Zhejiang Province, south eastern China, in order to observe and research the differences of drained pollutants and environmental compacts on the surrounding water quality and the soil quality of the paddy fields resulting from the testing paddy fields of different irrigation modes. The research shows that water-saving irrigation not only saves water resources, but also deducts pollutants and friendly to the environment. During the whole growing season, main water pol-lutants, like total nitrogen, total phosphor and chemical oxygen demands decreased by at least 22%,deducts the water environmental loads obviously. In the water-saving irrigated paddy field, the total quantity of reducing agents decreased by 20%, meanwhile active substances increased obviously, microorganism carbon increased by 14%; microorganism nitrogen increased by 19.5%, there fore thesoil quality was improved obviously.
机译：帕迪是中国最重要的粮食作物之一。稻田灌溉占据了中国南方农业用水的主要部分。同时，来自稻田的排水水已经是主要的非点农业污染源。不同的灌溉模式需要不同数量的灌溉水，而在不同程序中排出不同的污染物负荷..浙江省浙江省东南部的两次灌溉试验站进行了污染物的污染物的普遍试验。观察和研究排水污染物和环境契约对周围水质的差异和不同灌溉模式的稻田导致的稻田的土壤质量。该研究表明，节水灌溉不仅节省了水资源，而且还扣除了污染物和友好环境。在整个生长季节期间，主要水毒剂，如总氮，总磷光体和化学氧需求量减少至少22％，明显扣除水环境载荷。在节水灌溉稻田中，还原剂的总量减少了20％，同时活性物质明显增加，微生物碳增加了14％;微生物氮素增加了19.5％，术语质量明显提高了。

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