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在新疆墨玉县沙漠地区,设置4种治沙工程并比较了不同治沙工程措施培育土壤的效果。结果表明:不同治沙工程区土壤pH值和养分存在差异,pH值的大小顺序为天然稀疏植被封育区>草方格固沙-人工林区>人工林区>多种植物配置区,且天然稀疏植被封育区土壤pH值显著高于其他3个工程区(P<0.05);植物的定植时间影响了土壤养分,定植3年的人工林地土壤有机质、全氮、速效氮、全磷、有效磷、速效钾含量高于定植不久的草方格固沙-人工林地;多种植物配置区土壤有机质、全氮、速效氮、全磷和全钾含量都高于人工林区、草方格固沙-人工林区和天然稀疏植被封育区,但土壤速效磷和速效钾含量较其他工程区低,在该工程区应加强磷肥、钾肥的施用。
In the desert area of Moyu County, Xinjiang, four kinds of sand control projects were set up and the effects of different sand control measures on soil cultivation were compared. The results showed that there were differences in soil pH values and nutrients in different desertification control projects. The order of pH values was in order of natural sparse vegetation enclosure> grass-checkered sand fixation-plantation> artificial forest> Soil pH value in the sparse vegetation enclosure was significantly higher than that in the other three project areas (P <0.05). Plant colonization time affected soil nutrients and soil organic matter, total nitrogen, available nitrogen and total phosphorus in the plantation three years after planting Phosphorus and available potassium content were higher than that of the grass-framed sand-fixation plantation planted in the near future. The content of soil organic matter, total nitrogen, available nitrogen, total phosphorus and total potassium in various plant disposition areas were higher than those in artificial plantation, Plantation area and natural sparse vegetation enclosure area, but the contents of available phosphorus and available potassium in soil are lower than those in other engineering areas, and the application of phosphate fertilizer and potassium fertilizer should be strengthened in this project area.