黑山县历年来春季雨少,秋季雨多,冬雪也少,加上春风持续时间较长,因此,经常受到春旱威协,以至影响适时播种。多年实践证明,如果能采取冬灌措施,不仅能保证适时播 Over the years, less spring rainfall in Heishan County, more rain in autumn and less in winter snow, and the spring breeze lasts for a long time. Therefore, it is often affected by spring drought and threatened seeding. Years of practice has proved that if we can take winter irrigation measures, not only to ensure timely broadcast