有机缓释肥在黄瓜无土栽培上的应用分析

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1、ABSTRACTSTUDY0NTHEAPPLICATIoNOF0RGANICSLOW—RELEASEFEIⅡILIZERTOSOⅡ。LESSCUIJUREINCUCUMBERAimmingatthecrucialproblemsofcausingthelowyield，badqualityanddifficulttoproducethegreenvegetableororganicvegetableinsoillessculture，thestudyusingcucumber,tomato，sweetpepp

2、eranalyzedanddiscussedtheeffectoforganicslow-releasefertilizerintheexperimentsofculturingthethreevegetableseedlings，keytechniquescultivationinspringandautumningreenhouse．Thisstuaygottheproperquantityoforganicslow—releasefertilizeronthethreevegetableseedling

3、andcultivationperiod，andthereleaseruleoforganicslow—releasefertilzer．Theprimarilyresultsareasfollows：Thevolumetricratiovermiculitetotheslow-releaseorganicfertilizerwas30：1inseedlingperiod．Undertheoptimalratio，thephysiologiealindiceofcucumberseedlings，suchas

4、relativeprolificacyindex，soundseedlingindex，chlorophyllcontent’androotactivity,werebetter．Thecomprehensivecomparisonshowedthatthisratiowasbest，andunderthisoptimalratiothesoundseedlingsofcucumbercouldbecultured，andtheirrigationbyclearwatercouldreplacetheirri

5、gationbynutrientfluid，andthereforetheseedlingmanagementcouldbesimplified．Thevolumetricratiovermiculitetotheslow-releaseorganicfertilizerwas20：1incultivationperiod．ResultsshowedthatOSRFpossessedthecharacteristicsofoverallsupplyandslow—releaseofnutrients．Thep

6、lantheight，stemdiameter,leafarea，numberofleavesandfreshfruitweightofOSRFweresuperiortothoseofthecontr01．TheaveragefreshfruitweightappliedwithOSRFwashigherthanthatofthecontrolby35．6％．Underthisratio，thebestperformanceofgrowthandyieldofcucumberwasachieved．Thee

7、xperimentindicatedthatvermiculitecombinedwithorganicslow·releasefertilizerandcirclewaterirrigationcouldsubstitutecompostedsubstrateswithnutrientsolutionirrigationinlarge—scaleproduction．CompostedsubstrateirrigatedⅥimnutrientsolution、vermiculitewith1／20organ

8、icfertilizerirrigated、Ⅳimwaternosignificantly2南京农业大学硕士学位论文有机缓释肥在黄瓜无土栽培上的应用研究differencewereobservedintheplantgrowthpotential，plantheight，stemdiameter，leafarea，numberofleavesandyield．Sothestudyinductorga