山东禹城实验区经过20多年的综合治理,改良了11万亩盐碱薄地,使农作物赖以生存的土壤经历了脱盐与培肥的过程;使亩产只有100多公斤粮食的盐碱地变成了高产稳产农田。1989年粮食亩产750公斤,皮棉亩产85公斤。群众生活和自然面貌都发生了变化。实验区耕地13.9万亩,治理前有各类盐碱地11万 After more than 20 years of comprehensive treatment, Yucheng Experimental Zone in Shandong Province has improved 11 million mu of saline-alkali soil so that the soil on which crops depend for survival has undergone the process of desalination and fertilization; the saline-alkali land of only 100 kg of grain per mu has become High-yield and stable farmland. In 1989, 750 kg of grain per mu, lint mu 85 kg. Changes have taken place in people’s lives and in their natural appearance. The experimental area of ​​13.9 mu of cultivated land, before the treatment of various types of saline-alkali land 110,000