沧州地区土地管理局科技人员从1985年开始,在南皮县高庄子村重盐碱地上,经过四年研究,采用“开沟筑背,背上覆膜,造墒压盐,沟内覆盖”等技术,实现了土体内部水、盐就地小循环,使20cm土层脱盐率达96.58—96.37％。基础土含盐量由2.712%下降为0.11—0.157％。当年进行葡萄间作瓜菜,亩纯收入达800 Since 1985, Cangzhou Bureau of Land Management has started to research on the saline-alkali soil in Gaozhuangzi Village, Nanpi County. After four years of research, it adopts the principles of " Technology, to achieve a small soil water inside the salt, salt, so that 20 cm soil desalination rate of 96.58-96.37%. Base soil salt content decreased from 2.712% to 0.11-0.157%. Grapes for the year between the vegetables, acres of net income of 800