林地改造茶园对土壤养分动态变化的影响  

Effects of Forest Conversion on Tea Gardens on Dynamic Changes of Soil Nutrient

作　　者：褚旭东 朱培 刘政 张华[2] 孔力方 冯怡 王进[2] Chu Xudong;Zhu Pei;Liu Zheng;Zhang Hua;Kong Lifang;Feng Yi;Wang Jin(Changxing Forestry Bureau,Changxing,Zhejiang 313100,China;Zhejiang Academy of Forestry,Hangzhou,Zhejiang 310023,China)

机构地区：[1]浙江省长兴县林业局,浙江长兴313100 [2]浙江省林业科学研究院,浙江杭州310023

出　　处：《绿色科技》2022年第5期119-125,共7页Journal of Green Science and Technology

基　　金：浙江省科技厅院所专项(编号:2017F30015)。

摘　　要：为考察毁林种茶对林地土壤养分变化的影响规律,以长兴县3处典型茶园土壤及各自相邻的对照林地土壤为研究对象,在一年内每月采集样地土壤样品并检测有机质、碱解氮、速效磷、速效钾等指标含量,采用SPSS软件对土壤养分结果进行了统计分析,旨在揭示林地改造茶园后其土壤养分的含量特征、年变化动态规律及其原因。结果表明:茶园土壤(pH=4.28)相比较对照林地(pH=4.53)酸化程度略强,茶园土壤氮磷钾及有机质等营养成分含量较周边对照林地土壤均要高,且茶园表层土较深层土各营养成分含量要高。茶园土壤各养分指标因采样时间不同存在显著性差异(P<0.01);不同地点茶园养分年变化趋势大致相似。将林地改造成茶园且长期施肥经营,会造成茶园土壤中速效磷和速效钾的含量明显升高,茶园较林地生物多样性减少,土壤流失过程易造成周边水体富营养化。此研究结果对茶园土壤养分流失动态控制、茶园合理施肥、提高茶叶产量和品质均具有重要的指导意义。In order to study the effect of deforestation and planting tea on soil nutrient changes in forest land,three typical tea garden soils and their adjacent control forest soils in Changxing County were selected as the research objects.The soil samples of typical tea gardens and control forest land in Changxing County were collected monthly in a year.The organic matter,alkali-hydrolyzed nitrogen,available phosphorus and available potassium of samples were analyzed,which has important guiding significance for dynamic control of soil nutrient loss,rational fertilization and improvement of tea yield and quality.Based on the measured data,the annual dynamic content changes of organic matter,alkali-hydrolyzed nitrogen,available phosphorus and available potassium were analyzed,and the soil nutrient level was analyzed by SPSS.The acidification degree of tea garden soil(pH=4.28)was slightly stronger than that of control forest land(pH=4.53)in Changxing County.Meanwhile,the content of each index of tea garden surface soil was higher than that of deep soil of tea garden.There were significant differences(P<0.01)in soil nutrient index of tea garden due to different sampling time and sampling location.The nutrient content of different tea garden showed obvious similar annual change trend.The transformation of forest land into tea gardens and long-term fertilization management will cause the loss of soil nutrients and the eutrophication of surrounding water bodies.Countermeasures and suggestions are also given in this study,which has important guiding significance for the dynamic control of soil nutrient loss,reasonable fertilization,and improvement of tea yield and quality.

关 键 词：林地改造茶园 有机质 土壤养分 动态变化 长兴县 

分 类 号：S7[农业科学—林学]