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1、華中農(nóng)業(yè)大學(xué)2013屆碩士研究生學(xué)位論文綜上所述,推薦施肥量為N0.8kg/株,磷肥P2050.40kg/株,鉀肥為K20為O.50kg/株,同時(shí)配施0.25k∥株MgS04、40∥株ZnS04·7H20、60g/株EDDHA—Fe螯合鐵。關(guān)鍵詞:臍橙;果實(shí)產(chǎn)量;可溶性固形物;糖積累;轉(zhuǎn)化酶;蔗糖合成酶;蔗糖磷酸合成酶不同施肥處理對(duì)紐荷爾和紅肉臍橙果實(shí)糖積累的影響ABSTRACTFieldtrialswithtwonavelorangecultivars,‘Newhall’and‘Caracal'a’,we
2、reconductedintwoconsecutiveyears.Thepaperstudiedtheeffectofdifferentfertilizationtreatmentsonfruityieldandtotalsolublesolid,accumulationofsugarsofthefruitandmetabolism,SOastoprovidereferenceforfertilization.Themainresultsare嬲f(shuō)ollows:(1)Nitrogen,phosphatean
3、dpotassiumfertilizersapplicationincreasedfruitweight,fruityieldandfruitqualityofNewhallandCaracaranavelorange,therearedifferencesbetweenannual.Withtheincreaseofphosphorusandpotassiumfertilizerrate,thefruityieldofNewhallandCarataranavelorangeincreased,thefe
4、rtilizerrateswereN:0.80kg/hill,P205:0.40kg/hill,K20:O.50kg/hillwhenthef“tityieldofNewhallandCaracardnavelorangewerethehighest.Inaddition,applyingdifferentmicronutrientsandmesonutrientsfertilizersCanalsoincreasedthefruityield.Nitrogen,phosphate,andpotassium
5、fertilizerapplicationcanincreasethecontentoftotalsolublesolidinfruit.Accordingtheresultsoffertilizereffects,theoptimumfertilizerrateswereN:0.80kg/hill,P205:O.40kg/hill,K20:0.50kg/hill,inNewhallandCaracardorchards.WiththeapplicationofthePKtreatment,applying
6、micronutrientsandmesonutrientsfertilizerscanincreasethesolublesolidanddecreasedtitratableacidinfruit.ThefruitqualityinthetotaJofMgFeandZntreatmentWasthebestinthedifferentmicronutrientsandmesonutrientsfertilizerstreatments.(2)NPKandmicronutrientsfertilizers
7、appHcafionincreasedfructose,glucoseandsucrosecontentinfruit.Withtheincreaseofphosphorusandpotassiumfertilizerrate,thesugarcontentincreased,buthighphosphorusandpotassiumlimittedthesugarinthefruitcontinuestorise.Accordingtheresultsofsugarcontent,theoptimumfe
8、rtilizerrateswereN:0.80kgghill,P20s:0.40-4).60kg/hill,K20:0.50--0.75k∥hill.Fordifferentmicronutrientsandmesonutrientsfertilizerstreatments,theamountofsugarinthefruitwasintheorderofthetotalofMgFeandZn>Mg>Zn,F(xiàn)e