施加改良剂对黄河三角洲滨海盐渍土的改良效果

目的]为滨海盐渍土改良找到新的有效途径。方法]通过田间试验,研究了Encapsalt改良剂对黄河三角洲滨海盐渍土土壤盐分及作物的影响。结果]Encapsalt改良剂的最佳施用量为9 000～12 000 ml/hm2,分2次施的效果较好。第1次施Encapsalt改良剂,可明显降低土壤的含盐量和pH,提高作物的出苗率。第2次施Encapsalt改良剂,可以维持土壤的含盐量不升高,使土壤不发生返盐现象,从而减少死苗现象,保证作物的正常生长,提高作物产量。结论]Encapsalt改良剂值得进一步试验示范推广。

Improvement Effects of Encapsalt Amendment on a Coastal Saline Soil in Yellow River Delta

Objective]The research aimed to find a new and effiective approach of the improvement of coastal saline soil.Method] The experiments were carried out in the saline-alkali coastal field in Yellow River Delta to study the effects of Encapsalt amendment on soil salinity and crop.Result] The optimum application amount of Encapsalt amendment was 9 000-12 000 ml/hm2 and the applied effect was better with applying two times.The soil salinity and pH were significantly reduced with the first application of Encapsalt amendment,which could increase seedling rate of crop.With the second application of Encapsalt amendment,the soil salt content didn't increase,and the salinification didn't occur,which could reduce seedlings dead rate,promote normal growth of crops and increase crop output.Conclusion] The Encapsalt amendment was worth studying and spreading.