| 苏南丘陵不同林分类型土壤养分的动态特性 |
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| 引用本文： | 俞元春,赵永艳.苏南丘陵不同林分类型土壤养分的动态特性[J].浙江林学院学报,1998,15(1):32-36. |
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| 作者姓名： | 俞元春 赵永艳 |
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| 作者单位： | 南京林业大学森林资源与环境学院 |
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| 摘 要： | 对苏南丘陵区的杉木林、火炬松林、次生栎林及毛竹林生长期内林下土壤养分含量的动态特性进行了研究。结果表明：４－６月各森林林下土壤各种养分含量的呈下降趋势，而且速度很快，是氮、磷、钾施用的适当时期；６－８中种养分含量均比较稳定，变幅甚微，是土壤样品采集的季节；８－１０月有效钾的含量上升，速效磷的含量继续下降，全氮变化不明显，有机质除栎林迅速下降外，其他林分基本平稳，８－１０月是补充土壤磷素的又一季节。
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| 关 键 词： | 林分 土壤氮素 土壤磷素 土壤钾素 林地施肥 |
Status in Soils Under Different Forest Stands on the Hilly Regions of Southern Jiangsu Province. |
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| Yu Yuanchun.Status in Soils Under Different Forest Stands on the Hilly Regions of Southern Jiangsu Province.[J].Journal of Zhejiang Forestry College,1998,15(1):32-36. |
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| Authors: | Yu Yuanchun |
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| Abstract: | Dynamic properties of nutrient status in soils under Chinese fir plantation, olblolly pine plantation, secondary oak plantation at the same ages of 25 and phyllostachys pubescens plantation on the hilly regions of Jiangsu Province were studied. Results were as follows: (1) Nutrient contents fell at rairly high speed between April and June.It was a suitable season for fertilization.(2)From June to August,all the nutrient contents kept stable,so it was a good season for sampling.(3)Dynamics of nutrient contents from August to October varied, with available Krising,available P falling,total N keeping unchanging and organic matter keeping stable except oak falling.P fertilizer could be applied to some plantations during this period of time.Comparism ofnutrient status in soils of different forest stands was also given. |
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| Keywords: | forest stand soilnitrogen soil phosphorus soil potassium seasonal variations forest fertilization soil sampling |
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