莫志安,赖武婷,李俊杰,等.石门国家森林公园典型杉木林土壤理化特性分析[J].广东农业科学,2020,(7-8):- |
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石门国家森林公园典型杉木林土壤理化特性分析 |
Analysis of soil physical and chemical properties of the represented Chinese fir stands in Shimen National Park of China |
投稿时间:2020-06-18 修订日期:2020-06-18 |
DOI: |
中文关键词: 杉木 大径材 土壤养分 理化特性 平衡施肥 相关性 |
英文关键词: Chinese fir Large diameter timber Soil Nutrient Physical and chemical properties Balanced fertilization Correlation |
基金项目::“石门公园储备林杉木多目标经营示范林建设项目”(穗石门公园资合字[2018]13号) |
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中文摘要: |
【目的】为提高石门国家森林公园杉木林地生产力,满足杉木大径材生长及森林多目标经营需求,测定其土壤养分含量,为平衡施肥提供参考。【方法】通过对其土壤理化性质进行系统测评,测算试杉木大径材土壤养分需求量,从而达到平衡施肥的效果。【结果】调查区土壤pH值介于4.60~4.87间,土壤容重≤1.35g/cm3,总孔隙度在30.46%~50.25%之间。土壤有机质和氮素含量均在三级及以上标准;磷素含量在五级及以下标准;钾素含量在四级及以下标准。相关分析结果显示,土壤pH值与有机质、全氮、碱解氮、有效磷、速效钾极显著负相关,土壤有机质与全氮和有效氮、磷、钾呈极显著正相关,而全氮与碱解氮之间同样呈极显著正相关关系。【结论】石门国家森林公园各工区土壤容重和总孔隙度水平层次特性一致,属酸性土壤,土壤有机质、氮元素含量较为丰富,土壤磷、钾元素含量低。 |
英文摘要: |
【Objective】In order to improve the productivity of Chinese fir forest land in Shimen National Forest Park, meet the needs of large-diameter timber growth and forest multi-objective management, measure the soil nutrient content, and provide reference for balanced fertilization.【Method】Through the systematic evaluation of the soil physical and chemical properties, the nutrient demand of the large-diameter wood soil was calculated, so as to achieve the effect of balanced fertilization.【Result】The pH value of soil in the survey area is between 4.60 and 4.87, the bulk density of soil is ≤ 1.35g/cm3, and the total porosity is between 30.46% and 50.25%. The content of soil organic matter and nitrogen were in the third level and above; the content of phosphorus was in the fifth level and below; the content of potassium was in the fourth level and below.The results of correlation analysis showed that the pH value of soil was negatively correlated with organic matter, total nitrogen, alkali hydrolyzed nitrogen, available phosphorus and available potassium, while the organic matter was positively correlated with total nitrogen and available nitrogen, phosphorus and potassium, while the total nitrogen was positively correlated with alkali hydrolyzed nitrogen.【Conclusion】In Shimen National Forest Park, the soil bulk density and total porosity level are the same, which belong to acid soil. The content of soil organic matter and nitrogen is rich, and the content of soil phosphorus and potassium is low. |
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