玉米秸秆与污泥的腐解物对盐碱地化学指标的影响

发布时间：2018-04-25 08:17

本文选题：盐碱土 + 化学性质　；参考：《水土保持研究》2017年03期

【摘要】：为探索发酵后的玉米秸秆对内蒙古地区盐碱化土壤化学性质(有机质、ESP,pH值、EC、土壤代换性Na~+)的影响,在实验室条件下以污泥作为接种物,将玉米秸秆在不同发酵的条件下以不同梯度的秸秆还田量施加到盐碱化土壤中,以施加未发酵的玉米秸秆为对照。结果显示:(1)施加玉米秸秆对土壤的部分化学性质有着一定的改善,且发酵后的玉米秸秆比未发酵的玉米秸秆效果要好;(2)当玉米秸秆与污泥的配比为2∶1且秸秆还田量为75%时,土壤的有机质含量上升幅度最大,土壤的ESP、pH值、土壤代换性Na~+降低幅度最大;(3)施加玉米秸秆对土壤的EC作用不明显,反而使EC的含量有所上升,施用发酵后的玉米秸秆尤为明显。综合考虑,在本试验条件下针对该土壤最佳参数为:玉米秸秆与污泥配比为2∶1,发酵后的玉米秸秆还田量为75%。
[Abstract]:In order to explore the effect of fermented corn straw on the chemical properties of saline-alkali soil (organic matter ESPN pH value, soil substitution Na ~ ~) in Inner Mongolia, sludge was used as inoculum under laboratory conditions. Under different fermentation conditions, the corn straw was applied to the salinized soil with different gradient straw, and the unfermented corn straw was applied as the control. The results showed that the chemical properties of the soil were improved to some extent by adding corn straw, and the effect of fermented corn straw was better than that of unfermented corn straw.) when the ratio of corn straw and sludge was 2:1 and the amount of straw returned to the field was 75%, the effect of corn straw fermentation was better than that of unfermented corn straw. The soil organic matter content increased the most, the soil ESPN pH value, the soil substitution Na ~ (3)) the effect of maize straw on soil EC was not obvious, on the contrary, EC content was increased. The corn stalk after fermenting was especially obvious. The optimum parameters of the soil were: the ratio of corn straw to sludge was 2: 1, and the amount of corn straw returned to the field after fermentation was 755.The optimum parameters of the experiment were as follows: the ratio of corn straw to sludge was 2: 1.
【作者单位】：内蒙古科技大学能源与环境学院;包头市辐射环境管理处;晖泽水务(青州)有限公司;
【基金】：内蒙古自治区自然科学基金(2016MS0405,2016MS0221) 内蒙古科技大学产学研合作培育基金项目(2016CXY03)
【分类号】：S156.4

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