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自2008年开始用采自通辽市花吐古拉的盐碱土进行玉米秸秆隔离层处理,并种植大麦,分析4年盐碱土养分及碱化指标变化情况。结果表明:A3B1处理(玉米秸秆用量6kg/m2,掩埋深度为10cm)的改良效果最佳,经过4年的玉米秸秆隔离层生态修复,土壤有机质含量比对照区增加了10.4g/kg,碱解氮、速效磷、速效钾含量分别比对照区增加了43.2,56.0,102.7mg/kg,pH值下降了2.19个单位,碱化度下降了37.3%,总盐量降低了2.251g/kg;阳离子中K+、Na+、Ca2+、Mg2+含量分别下降了78.6%,72.8%,81.5%,75.6%;阴离子中CO23-、HCO3-、SO24-、Cl-含量分别下降了60.0%,75.5%,40.0%,65.5%。其他各处理区养分都得到不同程度的增加,碱化特征指标趋于良性改善。
Since 2008, corn stalk isolates have been treated with saline-alkali soil collected from Huatugula of Tongliao City and planted with barley. The changes of nutrients and alkalization indexes in four years of saline-alkali soil were analyzed. The results showed that A3B1 treatment (6kg / m2 corn stalk, 10cm depth) had the best improvement effect. After 4 years of ecological restoration of corn stalk, the content of organic matter in soil increased by 10.4g / kg, Nitrogen, available phosphorus and available potassium were increased by 43.2, 56.0 and 102.7 mg / kg respectively, the pH value decreased by 2.19 units, the alkalization degree decreased by 37.3% and the total salinity decreased by 2.251 g / kg. The contents of K +, Na +, Ca2 + and Mg2 + decreased by 78.6%, 72.8%, 81.5% and 75.6%, respectively. The content of CO23-, HCO3-, SO24- and Cl- in the anions decreased by 60.0%, 75.5% and 40.0% 65.5%. The nutrients in other treatment areas all increased in varying degrees, and the alkalization characteristics tended to be benignly improved.