一、春潮与春播的关系灵武川区和引黄灌区各县(市),每年春季都有不同程度的春潮发生。春潮来临的早、迟,大、小,不仅直接影响着春作物的播前整地质量、播种适期长短、播种质量、基肥肥效、土壤鹽碱大小以及出苗始期的板結程度和保苗率等,而且由于返潮返漿,也直接影响到倉庫粮食貯备及交通运輸、房屋建筑等方面。一般年份,春潮首先在低田、潮田、排水系統不良,地下水位較高、冬灌质量較差的地 First, the relationship between spring and sowing Lingwuchuan and Yellow River Irrigation District counties (cities), each spring has varying degrees of spring tide occurred. The early, late, big and small of the spring tide not only directly affect the quality of pre-sowing, the appropriate sowing duration, sowing quality, base fertilizer efficiency, soil salinity and alkalinity, , But also due to moisture return to pulp, but also directly affect the warehouse food storage and transportation, housing construction and so on. In general years, spring tide first in low fields, tidal fields, poor drainage system, high groundwater level, poor quality winter irrigation