施肥对毛竹笋材两用林土壤养分分布与肥力状况的影响

《施肥对毛竹笋材两用林土壤养分分布与肥力状况的影响》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、世界竹藤通讯学术园地AcademicFieldWORLDBAMBOOANDRATTAN施肥对毛竹笋材两用林土壤养分分布与肥力状况的影响112345郑蓉　郑维鹏　连华萍　王生华　曹光明　廖鹏辉（1福建省林业科学研究院福州350012；2福建三明市林业局三明3650003福建三明市岩前林业站三明365005；4福建将乐县林业局将乐3533005福建省林业科技推广总站福州350001）摘要：研究了三明市毛竹笋材两用林施肥前后土壤10项养分指标分布特性及施肥后土壤综合养分状况。结果表明：施肥后土壤养分指标变异系数为3.2%

2、～76.5%，属弱变异至中等变异程度；除pH值、全磷含量偏斜量绝对值小于5%之外，其它养分指标分布发生不同程度偏斜。应用主成分分析法，取前3个主成分作为土壤养分的综合指标，土壤的有机质、碱解氮、全氮、速效钾首先反映出土壤养分状况，其次为有效磷，第3为pH值、交换性镁。14个试验处理的土壤养分水平差异较明显，试验处理N2P2K2、N1P2K1、N2P2K1的养分综合得分值最高，而缺素试验处理（N0P2K2、N2P0K2、N2P2K0）综合得分值分列第11、13、12位，说明氮、磷、钾肥的合理配比施肥可有效提高土壤养分

3、综合水平。关键词：毛竹；施肥试验；土壤养分含量；主成分分析EffectsofFertilizationonSoilNutrientDistributionandFertilityStatusofShootandTimberStandofPhyllostachysedulis1123ZhengRongZhengWeipengLianHuapingWangShenghua45CaoGuangmingLiaoPenghui(1.FujianAcademyofForestryScience,Fuzhou350012,Chi

4、na;2.ForestryBureauofSanmingMunicipality,Sanming365000,China;3.YanqingForestryStationofSanmingCity,Sanming365005,China;4.ForestryBureauofJiangleCounty,Jiangle353300,China;5.GeneralStationofForestryScienceandTechnologyExtensionofFujianProvince,Fuzhou350001,Chin

5、a)Abstract:Thedistributingcharacteristicandsynthesizedfertilitystatusof10soilnutrientindexeswerestudiedinshootandtimberstandsofPhyllostachysedulisbeforeandafterthefertilization.Theresultshowedthatvariationcoefficientsofsoilnutrientindexeswereintherangeof3.2%-7

6、6.5%afterfertilization,andthevariationpresentedasfromweaktomedium.Therewerecommonlydeflectionsindifferentdegreeofthesoilnutrientindexeswhencomparedwiththosebeforethetreatment,exceptthatthedeflectionofpHvalueandtotalphosphoruscontentwerelessthan5%.Theprecedingt

7、hreeprincipalcomponentswereusedascompositeindicatorstoreflectthe10indexesofsoilnutrients.Thefirstprincipalcomponentincludedorganicmatter,availablenitrogen,totalnitrogenandavailablepotassiumwhichcanreflectthestatusofsoilnutrients;thesecondwasavailablephosphorus

8、;andthethirdwerepHvalueandexchangeablemagnesium.Thesoilnutrientcontentsweresignificantlydifferentamong14treatments.Thehighestcomprehensivescoresofsoilnutrientswerethetreatmentsresp