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宁夏引黄灌区春天干旱,风沙大,属干旱和半干旱地区,年降雨量少,仅20O毫米左右,且分布不均匀,多集中在7～9月份,不能满足春小麦对水分的要求,必须进行人工灌水。小麦是宁夏灌区主要夏粮作物,播种面积占引黄灌区农作物面积的一半。这里有句俗话“三秋不如一夏”,足以说明夺取小麦丰收的重要意义。实践证明,适时适量灌水,并与其他农作措施密切结合,就能不断提高土
Due to the spring droughts and large sandstorms in the Yellow River diversion irrigation areas in spring, the drought-affected and semi-arid areas of Ningxia are less arid with annual rainfall of only about 20 mm and are unevenly distributed, mostly in July and September, which can not meet the moisture requirements of spring wheat. Manual irrigation. Wheat is the main summer grain crop in Ningxia irrigation area, and the sown area accounts for half of the crop area in the Yellow River irrigated area. There is a saying here that “three autumn is better than summer,” enough to illustrate the importance of capturing the bumper harvest of wheat. Practice has proved that timely and appropriate irrigation, and with other farming practices in close association, we can continue to improve the soil