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为了摸清干旱地区灌水保苗的规律,建平县建立起五处旱田灌溉实验站.根据多年试验资料分析,搞好春灌应掌握以下几点:1.砂壤土晚春灌水:试验表明,砂壤上春灌比冬灌好,晚春灌比早春灌好.砂壤土春灌宜在惊蜇至春分进行,春分前5~10天灌水效果最好.如果灌溉水源条件好,灌溉设备能力高,能在10~15天就灌完地的,可在春分前5天灌水:
In order to find out the law of irrigation and seedling in arid areas, Jianping County established five dry-field irrigation experimental stations.According to many years of experimental data analysis, do a good job of spring irrigation should grasp the following points: 1. Sandy soil late spring irrigation: Spring irrigation is better than winter irrigation, late spring irrigation is better than early spring irrigation. Sand loam soil spring irrigation should start at spring sting to spring, 5 ~ 10 days before spring equinox irrigation best .If the irrigation water conditions are good, irrigation equipment capacity is high, in 10 ~ 15 End of the day irrigation, irrigation can be 5 days before the equinox: