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中国农学通报 ›› 2024, Vol. 40 ›› Issue (35): 64-69.doi: 10.11924/j.issn.1000-6850.casb2024-0199

• 资源·环境·生态·土壤·气象 • 上一篇    下一篇

林草间作对土壤理化性质及土壤微生物状况的影响

刘晓东1(), 李玉平2(), 姜佩庆3, 李柯2, 孙逢毅2, 戴义立1, 刘静2, 徐昪4   

  1. 1 济宁市任城区自然资源局,山东济宁 272100
    2 济宁市自然资源和规划局,山东济宁 272100
    3 济宁市微山县自然资源和规划局,山东济宁 277600
    4 邹城市自然自然资源和规划局,山东邹城 273501
  • 收稿日期:2024-03-18 修回日期:2024-08-18 出版日期:2024-12-15 发布日期:2024-12-12
  • 通讯作者:
    李玉平,男,1982年出生,山东金乡人,高级工程师,硕士,主要从事造林技术、森林抚育和经营管理方面的研究。通信地址:272100 山东省济宁市任城区海关路11号 济宁市自然资源和规划局,Tel:0537-6981062,E-mail:
  • 作者简介:

    刘晓东,男,1982年出生,山东济宁人,工程师,本科,研究方向:造林、森林抚育。通信地址:272100 山东省济宁市任城区供销北路2号 济宁市任城区自然资源局,Tel:0537-2363385,E-mail:

Effects of Intercropping Between Forest and Grass on Soil Physicochemical Properties and Soil Microbial Status in Southwestern Region of Shandong Province

LIU Xiaodong1(), LI Yuping2(), JIANG Peiqing3, LI Ke2, SUN Fengyi2, DAI Yili1, LIU Jing2, XU Bian4   

  1. 1 Rencheng District Bureau of Natural Resources, Jining, Shandong 272100
    2 Jining Natural Resources and Planning Bureau, Jining, Shandong 272100
    3 Weishan District Bureau of Natural Resources, Jining, Shandong 277600
    4 Zoucheng Natural Resources and Planning Bureau, Zoucheng, Shandong 273501
  • Received:2024-03-18 Revised:2024-08-18 Published:2024-12-15 Online:2024-12-12

摘要:

为研究不同种植密度和土壤类型条件下林草间作对土壤养分含量、土壤理化性质和土壤微生物数量的影响,以杨树林下种植麦冬为研究对象,设置了3个不同造林密度和2个不同地类,通过测定,对比不同处理方式下土壤养分、土壤理化性质、土壤微生物数量变化规律。结果表明:与平原地相比,河滩地土壤有效养分含量有所下降,且不同地类之间的速效N、速效P、速效K、有效Fe、有效Mn、有效Cu、有效Zn和有机质含量的存在极显著差异(P<0.05);不同造林密度之间,速效N、速效K、有效Mn、有效Cu含量的存在极显著差异(P<0.05),其他元素和有机质含量差异不显著(P>0.1)。土壤容重平原农耕地大于河滩地,河滩地的饱和含水量、总孔隙度、细菌、真菌、放线菌和微生物总量大于平原农耕地。不同造林密度之间,平原农耕地除土壤容重和土壤总孔隙度外,其他土壤理化性质和土壤微生物数量均为LN2高,且土壤容重、饱和含水量、总孔隙度、真菌、放线菌差异极显著(P<0.05);而河滩地土壤理化性质和土壤微生物数量变化规律不明显,不同地类之间的土壤容重、饱和含水量、总孔隙度、细菌、真菌、放线菌和微生物总数差异极显著(P<0.05)。综上所述,林分密度和土壤类型对土壤养分、土壤微生物含量等因子具有明显影响,从长远来看,密度为5 m×6 m或者5 m×8 m的林分,树木长势好,养分含量较高,是较为理想的种植密度。研究以期为林草间作复合经营模式提供参考。

关键词: 杨树, 林草间作, 土壤理化性质, 土壤微生物

Abstract:

The study aims to analyze the variations in soil nutrient content, soil physicochemical properties and soil microbial quantity across different site types and planting densities during intercropping between forests and grasses, to offer insights for selecting an optimal management approach for intercropping between forests and grasses. With Ophiopogon japonicus planted under poplar forests as the subject of the study, three different afforestation densities and two different land types were established. By measuring, we compared the variations in soil nutrients, soil physicochemical properties and soil microbial quantity under different treatment methods. The results showed that compared to plain land, riverbank land had lower nutrient content in terms of available N, available P, available K, available Fe, available Mn, available Cu, available Zn and organic matter. There were significant variations in these elements among different land types (P<0.05). Additionally, there were extremely significant differences in available N, available K, available Mn and available Cu among various afforestation densities, while no significant differences were observed in other elements and organic matter content (P>0.1). In comparison to riverbank farmland, plain farmland had a greater soil bulk density but lower saturated water content, total porosity, bacteria, fungi, actinomycetes and total microbial content. In plain farmland, among various afforestation densities, all soil physicochemical properties and soil microbial numbers were higher than that in LN2, except for soil bulk density and total soil porosity. The differences in soil bulk density, saturated water content, total porosity, fungi, and actinomycetes were extremely significant (P<0.05). However, the changes in soil physical and chemical properties and soil microbial quantity in riverbank land were not significant. The variations in soil bulk density, saturated water content, total porosity, bacteria, fungi, actinomycetes, and total microbial count between various types of land are highly significant (P<0.05). To sum up, in the long run, forests with a density of 5 m×6 m or 5 m×8 m exhibit excellent tree growth and nutrient levels, making them optimal planting densities.

Key words: poplar, intercropping between forest and grass, soil physicochemical properties, soil microorganism