改良剂对水稻育秧棚盐碱土的改良效果

Improvement Effects of Amendment on Saline-Alkali Soil in Seedling Raising Shed of Rice

为了探究综合土壤改良剂对水稻育秧棚盐碱土改良效果,通过田间小区试验,在等量石膏、菌渣及硫酸铝基础上设置不同腐殖酸用量处理,与未改良前的土壤容重、孔隙度、pH、电导率、盐基离子进行比较分析。结果表明,施用改良剂S5使土壤的容重从1.31g·cm^(-3)降低到1.21g·cm^(-3);孔隙度增加到67.50%,电导率由0.360mS·cm^(-1)下降到0.260mS·cm^(-1);pH由9.42下降到8.41,由碱性变成微碱性;全盐量由1.741g·kg^(-1)下降到0.849g·kg^(-1),且差异显著。可见,改良剂S5对水稻育秧棚盐碱土改良效果较好,可以达到生产应用要求。

In order to explore the effect of comprehensive soil amendments on the improvement of saline-alkali soil in rice seedling shed,through field experiments,different dosages of humic acid were set on the basis of equal amounts of gypsum and fungus residue-based aluminum sulfate,which were comparable to the soil bulk density before improvement,the porosity,pH,conductivity,and base ions were compared and analyzed.The results showed that the application of improver S5reduced the soil bulk density from 1.31g·cm-3 to1.21g·cm-3.The porosity increased to 67.50%and the electrical conductivity decreased from 0.36mS·cm-1to 0.260mS·cm-1.And the pH decreased from 9.42to 8.41,changed from alkaline to slightly alkaline,the total salt content significantly reduced from 1.741g·kg-1 to 0.849g·kg-1.The amendment S5had a better effect on the improvement of saline-alkali soil in rice seedling sheds,which can meet the requirements of production and application.