海水倒灌致水田盐渍化特点及脱盐措施

Study on Characteristics of Salinity of Paddy Field Induced by Seawater Flowing Backward and Ameliorative Measures

海水倒灌可导致水田土壤严重盐渍化．盐渍水田的盐分组成较接近于海水，因犁底层阻隔，土壤盐分分布、运动主要在耕层，是“无根之盐”，易于脱除．采取排水、翻耕、泡田洗盐、冬种等综合配套技术措施，可加速土壤脱盐．应用抗盐栽培技术，可获得灾后冬种、早稻生产的好收成．

The seawater flowing backward can result in serious salinity of paddy soil. The salt compositions of salinized soil is similar with seawater's. Because of the obstruction of the plough sole, the salt is mainly distributed and moved in the cultivated layer. Hence, it is 'non-root salt' that can be easily desalinated, we can adopt the comprehensive techniques of drainage. ploughing, irrigation for washing salt, winter crops productions, etc for accelerating the desalination of soil. Meanwhile, using the anti-salt cultivation techniques can achieve harvest of winter crops production and early rice.