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水稻旱种就是水稻在旱地状态下栽培,是一项节水栽培技术。由于我国北方水资源紧缺,因而在北方地区水稻早种发展迅速,几乎遍及淮河、秦岭以北各省市,1985年推广面积达240万亩。近年来,又有向长江流域丘陵、山区的“望天田”发展的趋势。阜南县位于黄淮海平原南缘,紧靠淮河北岸,年平均降雨量916.6毫米,在夏播作物生长期(6—9月)降雨量年平均在460—540毫米之间,只要辅之以适量的补充灌溉,就能基本满足水稻早种的需水要求。因此,在我县推广水稻早种,比北方具有更大的优势。
Dry cultivation of rice is rice cultivation under dry land conditions, is a water-saving cultivation techniques. Due to the shortage of water resources in northern China, rice varieties in northern China developed rapidly and covered almost all provinces and cities of the Huaihe River and Qinling Mountains to the north of the country. In 1985, an area of 2.4 million mu was popularized. In recent years, there has been a tendency toward the development of “Hope Tiantian” in the hills and mountains in the Yangtze valley. Funan County is located in the southern edge of the Huang-Huai-Hai Plain, close to the north bank of the Huaihe River, with an average annual rainfall of 916.6 millimeters. In the summer sowing crops growing season (June-September), the annual rainfall is between 460-540 millimeters, Appropriate amount of supplementary irrigation, we can basically meet the early rice water requirements. Therefore, in our county to promote early rice varieties, have greater advantages than the north.