发酵玉米秸秆对盐碱地土壤肥力指标的影响

发布时间：2018-06-18 01:35

  本文选题：玉米秸秆 + 发酵　； 参考：《灌溉排水学报》2017年12期

【摘要】：为探索发酵玉米秸秆施加到盐碱土后对土壤肥力指标的影响,将未发酵的玉米秸秆作为对照,采用盆栽试验方法对比分析了不同比例(1∶1、2∶1、3∶1、6∶1)秸秆和污泥混合发酵的玉米秸秆分别以不同用量(1.25、2.50、3.75、5.00 g/kg)施加到盐碱土后土壤肥力指标的变化。结果表明,施加发酵后的玉米秸秆,土壤有机质、速效钾质量分数显著增加,土壤速效氮和速效磷质量分数有所降低。经比较分析,施加2.50 g/kg发酵比例为2∶1的玉米秸秆对土壤肥力指标及土壤酶活性的影响最为显著,其中,土壤微生物量碳、氮分别较原土提高了0.90倍、1.07倍;土壤碱性磷酸酶、脲酶、纤维素酶、过氧化氢酶分别较原土提高54.47%、37.00%、33.82%、59.77%。
[Abstract]:In order to explore the effect of fermented corn straw on soil fertility, unfermented corn straw was used as control. Pot experiment was used to compare and analyze the change of soil fertility index after different ratio of 1: 1: 2: 1: 1: 1: 6: 1) straw and corn straw fermented by sludge were added to saline-alkali soil with different dosage of 1.25 ~ 2.50 ~ 3.75 ~ 5.00 g 路kg ~ (-1) 路kg ~ (-1) ~ (-1) ~ (-1) ~ (-1) ~ (-1) ~ (-1) ~ (-1) ~ (-1) ~ (-1) respectively. The results showed that the content of soil organic matter and available potassium increased significantly and the available nitrogen and phosphorus content of soil decreased after fermenting. By comparison and analysis, the effect of corn straw with the ratio of 2.50 g/kg to 2:1 on soil fertility index and soil enzyme activity was most significant. Among them, soil microbial biomass carbon and nitrogen increased by 0.90 times and 1.07 times respectively compared with the original soil, and soil alkaline phosphatase was also increased by 0.90 times and 1.07 times than that of the original soil, respectively. Urease, cellulase and catalase increased 54.47% and 37.00% and 33.82%, respectively, compared with the original soil.
【作者单位】： 内蒙古科技大学;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项目(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;S158
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本文编号：2033404