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盐碱土种水稻最根本的问题就是防治盐害,必须根据“盐随水来,盐随水走,水随气散,气散盐存”的基本规律进行综合治理。在盐碱土地区种稻,要排灌工程配套,完善排水系统,排水是关键,排水措施的主要作用是:及时排除水稻生长期间与降雨等造成的地表水。水稻成熟后,及时排除各级灌排渠道内积存的水和土壤水,不留尾水以利收割和防止返盐,整个排灌期间有效地降低地下水位。一、盐碱地种稻的工程设施 1、沟网化。干、支、斗、农、毛各级排水沟系统配套,保证排水畅通。一般采用浅沟密网或浅深结合的排水系统。排水网能否起到应有的作用,主要看
Salt and alkali soil rice is the most fundamental issue of salt control, must be based on “salt with the water, salt with the water go, water with gas scattered, gas and salt stored” the basic rules of comprehensive management. In saline-alkali soil planting paddy, irrigation and drainage projects to complete, improve the drainage system, drainage is the key, the main role of drainage measures are: the timely exclusion of rice during the growth and precipitation caused by surface water. After the rice is ripe, the water and soil water accumulated in irrigation and drainage channels at all levels are promptly excluded, and the tail water is not leftover for harvesting and salt return prevention, and the water table is effectively reduced during the irrigation and drainage period. First, the project of saline-alkali rice planting 1, ditch network. Dry, branch, bucket, agriculture, fur drainage system at all levels of drainage to ensure smooth drainage. Generally use shallow ditch dense network or shallow drainage system. Drainage network can play its due role, mainly to see