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一、灌溉定额稻田需水量减去有效利用的降水量称为灌溉定额。我省中、南部一季稻的灌溉定额为２００～２８０立方米／亩，双季稻为４００～５７３立方米／亩；淮北稻田耗水量大，能有效利用的天然降水较少，其灌溉定额高于南部地区，麦茬中稻一般为５００～６００立方米／...
First, the irrigation quota Paddy water demand minus effective use of precipitation is called irrigation quotas. The irrigation quotas of the first and second season rice in central and southern part of our province are 200 ~ 280m3 / mu and the double-season rice is 400 ~ 573m3 / mu. The heavy rainfall in Huaibei paddy field can reduce the natural precipitation effectively, and the irrigation quota is high In the southern region, wheat stubble rice is generally 500 ~ 600 cubic meters / ...