不同配方腐植酸型土壤调理剂对滨海盐碱地土壤性质及小麦产量的影响

Effects of Different Humic Acid Soil Conditioners on Wheat Yield and Main Properties of Coastal Alkali-saline Soil

通过田间试验研究了不同配方腐植酸型土壤调理剂对滨海盐碱地土壤性质和小麦产量的影响。结果表明:3种配方腐植酸型土壤调理剂均能改善土壤理化性状,不同程度地降低盐碱地土壤容重和电导率;提高土壤碱性磷酸酶活性,降低土壤多酚氧化酶活性,有助于土壤中有机磷向无机磷转化;显著促进小麦生长,增加小麦产量,增产率19.06%~37.37%。可见,腐植酸型土壤调理剂对盐碱障碍土壤修复和小麦增产有效,3种配方中以腐植酸+糠醛渣+硫酸铝+硫酸镁(T4)处理效果最佳,可在北方盐碱障碍土壤上进一步试验示范。

The field experiment was conducted to study the effects of different humic acid soil conditioners on wheat growth and main properties of coastal alkali-saline soil.The results showed that all 3 different formulations of humic acid soil conditioners could improve soil physical and chemical properties,while reduce the soil bulk density and conductivity.Furthermore,3 different formulations of humic acid soil conditioners could improve the activity of alkaline phosphatase in soil and reduce the activity of soil polyphenol oxidase,contribute to soil organic phosphorus to inorganic phosphorus conversion.All 3 formulations of humic acid soil conditioners could significantly increase the growth of winter wheat and the wheat yield ranged 19.06%~37.37%compared with the control.Therefore,humic acid soil conditioner was effective to saline-alkali obstacle soil remediation and wheat yield increase.The combination humic acid+furfural-residue+aluminum sulfate+magnesium sulfate(T4)was the best among 3 kinds of formula,that could be further tested and demonstrated on saline-alkali obstacle soil in north China.