嘉兴平原土壤渍害及防治对策

Study on Soil Salinization in Jiaxing Plain and the Control Countermeasures.

９０年代以来，嘉兴洪涝灾害频发，造成土壤渍害，由此造成的粮食损失至少７．５万ｔ／ａ，约占全市粮食总产的３％。低洼涝渍田和粘闭滞渍田是渍害土壤的主要类型，约占全市低产田总面积的８０％。调查了渍害土壤的范围、分布，对其理化性质、土体发育特征以及渍害的发展趋势也进行了分析，提出了相应的防治对策。

Since 1990, frequent flood calamities have caused soil salinization in the area of Jiaxing municipality, resulted in the decrease of grain yield by at least 75 ?00 tons a year, accounts for about 3% of the total grain yield of the area. The waterlogged lowland and clay salinized land accounted for 80% of the area′s low yield farmland. The range and the distribution of salinized land were investigated. The soil chemical and physical properties, the characteristics of soil development and the trend of soil salinization are analyzed. Soil salinization control countermeasures have also been proposed.