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1、恩施州耕地土壤剖面理化特征及養(yǎng)分分布變化規(guī)律李衛(wèi)東陳永波*黃光昱張朝陽胡百順秦邦劉淑琴陳娥熊倩(恩施州硒應(yīng)用技術(shù)與產(chǎn)品開發(fā)研究院,湖北,恩施,445000)摘要:對恩施州利川市齊岳山蔬菜、汪營糧食、恩施市芭蕉茶葉基地等3個觀測點土壤剖面的理化特征及養(yǎng)分分布規(guī)律進(jìn)行了研究。3個觀測點土壤容重在1.23-1.43g/cm3之間,為壤土或砂壤土;電導(dǎo)率23.57-38.83μS/cm,無鹽堿化;pH值4.22-6.61,偏酸性或強(qiáng)酸性;有機(jī)質(zhì)12.97-52.88g/kg、銨態(tài)氮16.09-31.72mg/kg、有效磷1.59-185.56mg/kg、速效鉀0-131.
2、03mg/kg、總硒0.30-1.32mg/kg,屬富硒土壤、有效硒0.02-0.23mg/kg,剖面有效養(yǎng)分從表層到底層呈下降趨勢,相關(guān)系數(shù)R2在0.1329-0.9399之間,不同養(yǎng)分差異大,剖面間分布規(guī)律基本一致。該項研究是土壤質(zhì)量長期監(jiān)測的基礎(chǔ)工作,目的是監(jiān)測不同施肥方式對蔬菜、糧食、茶葉基地土壤質(zhì)量變化的影響,為修復(fù)土壤、提高農(nóng)產(chǎn)品質(zhì)量奠定基礎(chǔ)。關(guān)鍵詞:恩施州土壤剖面;理化特征;養(yǎng)分;分布規(guī)律Physicalandchemicalcharacteristicsandnutrientdistributionofcultivatedlandprofilesi
3、nEnshiPrefectureLIWeidong,CHENYongbo,HUANGGuangyu,ZHANGChaoyang,HUBaishun,QINBang,LIUShuqin,CHENE,XIONGQianEnshiSeleniumApplicationTechnologyandProductDevelopmentResearchInstitute,Hubei,Enshi,445000Abstract:Thephysicalandchemicalcharacteristicsandnutrientdistributionofsoilprofilesofve
4、getableinQiyuemountain,graininWangying-LichuanCityandteainBajiao-EnshiCitywerestudied.Thebulkdensityofsoilat3observationpointsisbetween基金項目:與新西蘭林肯大學(xué)合作項目-恩施州耕地土壤質(zhì)量監(jiān)控與改良技術(shù)研發(fā)專項。作者簡介:李衛(wèi)東(1961-),男,湖北恩施,正高職高級農(nóng)藝師,主要從事硒資源開發(fā)利用研究,E-mail:360842122@qq.com。通訊作者:陳永波(1967-),男,大學(xué)本科,湖北恩施,正高職高級農(nóng)藝師,現(xiàn)主要從
5、事硒應(yīng)用技術(shù)與產(chǎn)品開發(fā)工作,E-mail:545529518@qq.com。1.23-1.43g/cm3,whichisloamorsandyloam.Conductivity23.57-38.83μS/cm,nosalinization.pH4.22-6.61,slightlyorstronglyacidic.Organicmatter12.97-52.88g/kg,Ammoniumnitrogen16.09-31.72mg/kg,Availablephosphorus1.59-185.56mg/kg,Availablepotassium0-131.03mg/k
6、g,Totalselenium0.30-1.32mg/kg,Serichsoil,Availableseleniumwas0.02-0.23mg/kg.Theavailablenutrientsintheprofiledecreasedfromthesurfacetothebottom,thecorrelationcoefficientR2wasbetween0.1329-0.9399,thedifferenceofdifferentnutrientswaslarge,andthedistributionoftheprofileswasbasicallythesa
7、me.Thepurposeofthisstudyistomonitortheeffectsofdifferentfertilizationmethodsonsoilqualitychangesinvegetable,grainandteabases,andtolayafoundationforsoilrestorationandimprovementofagriculturalproductquality.Keywords:Enshiprefecture;Soilprofile;Physicochemicalproperties;Totalselenium;Ava
8、ilabl