中晚熟抗黑腐病青花菜新品種種子生產(chǎn)與高產(chǎn)栽培技術(shù)研究.pdf

1、西北農(nóng)林科技大學(xué)碩士學(xué)位論文中晚熟抗黑腐病青花菜新品種種子生產(chǎn)與高產(chǎn)栽培技術(shù)研究姓名：楊竹瑩申請學(xué)位級別：碩士專業(yè)：農(nóng)業(yè)推廣園藝指導(dǎo)教師：黨永華200711011’HERESEARCHONT肛TECHNOLOGYOFHIGHYIELDCU珊、誚LTIONANDSEEDPROI)1ICTIONOFTHEhⅡDDLELA：IEM，叮UREDNEWV剮RIETYWITHBLACKROTRESIS刪CEOFSHENGIⅣERHAOOFBROCC

2、OLIABSTRACTTheBlackrotresistanthybridJ98068584xB68withfineintegratedtraitswasproducedbytheutilizationofselfcrosssterilelinesandbackcrossThehybridhasbeenidentifiedbyShanghaiIdentificationCommitteeforNewVarietiesofCropsand

3、wasgivenaidentifiedname“ShenglvErhao”Thehybfidismiddle—latematuredanditsgrowingperiedvariesfrom120daysto130daysindownstreamofYangtzeRivera_relLThetopheadisitsmainpartoftheyieldanditsshapelookslikehighmumTheaverageweighti

4、nessperheadis450—5009Thebudisverysmall，uniformandarrangedtightlyThefloweringbranchisshortIt’SsteakisenrichwithoutemptyheartThehybndiSstrongresistanttoblackrotdiseaseComparedwiththemainvariety”Shenglv”，importedfromJapanSh

5、englvErhaogrowsstrongeLmaturesthreedaysearlierandtheendharvesttimeisalmostthesameTheaverageweightinessperheadofShenglvErhaois4949thatis46％heavierthanShenglvIt’Saverageyieldgets9101kg／667m：thatis87％higherthanShenglvIt’Sco

6、mmercialrategets813％thatisthesanleasShenglvFivedemonstratingfieldsof15hm2wasestablishedinZhejiang，Shanghaiandotherdistricts66hm2‘demonstratinglandforexportingWasestablishedinJinshandistrictsrme姍2000hm2hasbeenpopularizedt

7、ollsethehybridShenglvErhaoinbroccolicultivationwithin20022006Theproductionvaluegets45millionYuanandincreasedproductionvaluegets5millionⅥlanWhentheseedsofhybdaofShenglvErhaoistobeproducedinordertoguaranteefloweringtimeoft

8、hemaleparentsandfemaleparentstomeetthesuitablesowingtimeoffemaleparemisfrom27Augtol，SepSowingtimeofmaleparentsisrecommendeddelayfor25daystoonemonthTheoptimumratioofmaleandfemaleparentshouldbe1：1WhenShenglvErhaoisutilized

9、tobroccoliproduction，Thebestsowingdateissuggestedfrom31julyto20AugustWithinthisperiodearliersowed，moreyieldThehybridistoleranttothinfieldandSensitivetoOVerfertilizerWhenfertilizerisreducedby20％，theaverageweightinessperhe