聚马来酸对棚室次生盐渍化土壤盐分的影响

Effect of Polymaleic Acid on Salt of Secondary Salinization Soil

[目的]研究聚马来酸(PMA)对次生盐渍化土壤盐分的影响。[方法]设4个处理,其中,处理1为清水对照,处理2施用130g/m2PMA,处理3施用260 g/m2PMA,处理4施用B、Zn、Fe复合微肥1 g/m2,3次重复,随机区组设计,测定不同处理对次生盐渍化土壤盐分的影响。[结果]处理3对次生盐渍化土壤影响最大,EC值为2.6 mS/cm,其次为处理2,EC值为3.0 ms/cm;处理2 SO42-含量最低,达3.688 g/kg,其次为处理4,为7.024 g/kg;处理3 Na+浓度最低,为11.81 g/kg,其次为处理2,为15.13 g/kg;处理3 Mg2+浓度最低,为1.943 g/kg,其次为处理2,为2.254 g/kg。[结论]PMA可以降低土壤盐分,改善土壤的盐渍化程度。

[ Objective I The study aimed to research the effect of PMA on salt of secondary salinization soil. [ Method ] A randomized block design with four treatments and three repeats was adopted to determine the effect of different treatments on the salt of secondary salinization soil. [ Result ] The treatment 3 had the biggest influence on the secondary salinization soil with the EC value of 2.6 mS/cm, then followed by treatment 2 with the EC value of 3.0 mS/era ; treatment 2 had the lowest SO42 - content with 3. 688 g/kg, followed by treatment 4 with 7. 024 g/kg ; treatment 3 had the lowest Na ＋ concentration with 11.81 g/kg,then followed by treatment 2 with 15.13 g/kg; treatment 3 had the lowest Mg^2＋ concentration with 1. 943 g/kg,then tollowed by treatment 2 with 2. 254 g/kg. [ Conclusion] PMA could reduce the salt content and improve the soil salinization degree.