Page 34 - 《华农农业大学学报》2020年第4期

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华 中 农 业 大 学 学 报 第 ３９ 卷
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Effectofbiochara pp licationonp otassiumcontentofdifferent
formsinredsoilandthe g rowthof p akchoi

,
,
CONG Min gZHANG Men gy an g XIA Hao , JIANGCuncan g
Colle g eo fResourcesandEnvironment , Huazhon gA g riculturalUniversit y Wuhan４３００７０ , China
,

Abstract “ HotGreenNo．２ ” akchoiwas p otＧ p lantedwithfivetreatmentsincludin g ０％ C , １％ C ,
p
２％ C , ４％ Candnormala pp licationof p otassiumfertilizertoinvesti g atetheeffectsofbiochara pp licaＧ
tiononp otassiumcontentofdifferentformsinredsoilandtheg rowthof p akchoi．Resultsshowedthat
theeffectsofbiocharoncontentofwaterＧsoluble p otassium , exchan g eable p otassiumandnonＧexchan g eaＧ
blep otassiuminredsoilwereincreasedb y １２．６％Ｇ５１．８％ , １３．３％Ｇ４３．５％and１０．３％Ｇ２６．１％ , res p ectivel y ,
com p aredtothecontrol．Theeffectofbiocharonim p rovin gdifferentformsof p otassiumbetween４％ C
andnormal p otassium wasthemostsimilar．Biochara pp licationincreasedsoil p Hvaluesi g nificantl yb y
０．０６Ｇ０．２５units , asavailablep hos p horus , availablep otassiumandor g aniccarboninsoil．Alsothecation
,
,
exchan g eca p acit y exchan g eablecalcium and ma g nesium contentincreasedsi g nificantl y whiletheexＧ
chan g eablealuminumcontentdecreasedsi g nificantl ywithadecreaseof８７％Ｇ９８％．Biochara pp lication
couldim p rovep akchoig rowthp erformanceasincreasin gthebiomass , leafnumber , lanthei g htand
p
freshwei g htof p akchoi．
Ke y words biochar ; redsoil ; otassiumcontent ; otassiumshorta g e ; akchoi ; soilim p rovement ;
p
p
p
biocharre p lacementof p otassium
( 责任编辑: 赵琳琳)