施用改良剂后盐渍化土壤养分和棉花产量变化

The Analysis of the Nutrient and Cotton Yield Variation Under the Application of Different Soil Modifier in Saline Soil

为了初步阐明在施用土壤改良剂后盐渍化土壤养分和棉花生长变化。利用4种不同的土壤改良剂,通过田间试验探讨施入不同品种改良剂后棉区盐渍化土壤的养分及棉花生长和产量变化。结果表明,盐渍化土壤输入4种改良剂后,土壤有机质、速效氮、速效磷和速效钾均有不同程度的提高,说明这4种改良剂对盐渍化土壤具有明显的改土培肥效果,其中以DS1997和磷石膏的改土效果较显著。棉区盐渍化土壤输入改良剂后,土壤肥力得到明显改善,并促进了棉花的生长发育,棉花的生物产量和经济产量均有不同程度的提高。由此得出,土壤改良剂可有效减少盐分危害,改善土壤质量,进而提高土地生产能力。

Preliminary study the change of nutrients of saline soil and cotton growth under the application of soil amendment, by using of 4 kinds of soil amendments in field experiments to identify the change of growth and yield of cotton in saline soil and changes of saline soil nutrient. Results showed that, after input this four kinds of modifiers, soil organic matter, available nitrogen, available phosphorus and available potassium were all increased relatively by different degrees, indicating that these amendments which were used in saline soil for cotton grown can improve the soil fertilization effects. The effects of soil DS1997 and phosphorus gypsum to saline soil amendments were significantly compared with other two amendments. After using the soil improving in saline soil, the soil fertility was significantly improved, and promoted the growth of cotton, cotton biomass yield and economic yield was increased to different degrees. Soil amendments can effectively reduce the salt damage, improve soil quality, and improve the production capacity of the land.