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1、安徽農(nóng)業(yè)科學(xué),JournalofAnhuiAgri.Sci.2014,42(1):107—109,155責(zé)任編輯劉月娟責(zé)任校對(duì)盧瑤不同氮肥水平對(duì)甜瓜“南海蜜”生長·品質(zhì)及產(chǎn)量的影響黃植,曹明,楊小鋒,楊沐,楊光華(三亞市南繁科學(xué)技術(shù)研究院,海南省熱帶設(shè)施農(nóng)業(yè)工程技術(shù)研究中心,海南三亞572000)摘要『目的]研究不同氮肥濃度對(duì)甜瓜“南海蜜”生長、品質(zhì)及產(chǎn)量的影響。[方法]在無土栽培模式下,設(shè)計(jì)4個(gè)氮肥濃度處理(7、10、13、16mmol/L)。『結(jié)果]在幼苗期,氮肥水平低的甜瓜較氮肥水平高的的葉面積大;在伸蔓期,中等氮肥水平的甜瓜葉面積最大;在授
2、粉期后,氮肥水平高的甜瓜葉面積最大。隨著氮肥的增加,甜瓜結(jié)果中期果實(shí)可溶性固形物和可溶性糖含量顯著增加,而過多的氮肥對(duì)結(jié)果后期和收獲期時(shí)甜瓜的可溶性圓形物和可溶性糖含量沒有影響。低氮肥水平的甜瓜V含量顯著高于高氮肥水平。高氮肥水平對(duì)甜瓜產(chǎn)量有抑制作用?!航Y(jié)論]N10處理經(jīng)濟(jì)效應(yīng)最高,其氮肥用量為125.10kg/hmz,產(chǎn)量為72730kg/hm2,除氮肥成本后產(chǎn)值為2647107L/hm。關(guān)鍵詞氮肥水平;無土栽培;經(jīng)濟(jì)效益;品質(zhì)中圖分類號(hào)S652文獻(xiàn)標(biāo)識(shí)碼A文章編號(hào)0517—6611(2014)01—00107—03EfectsofDifiere
3、ntRatiosofNitrogenNutrientonGrowth.QualityandYieldofSoillessCultivatedMelon”NanHaiMi--HUANGZhietal(SanyaScienceandTechnologyAcademyforCorpWinterMultiplication,HainanEngineeringResearchCenterforTrop—icalFacilityAgriculture,Sanya,Hainan572000)Abstract[Objective]Theeffectsofnitro
4、gennutrientlevelsonvegetativegrowth,qualityandyieldofmelon”NanHaiMi”werestudied.『Method]Undertheconditionofsoillesscultivation,fourkindsofdifferentnitrogenconcentrationinnutrientsolutionwhichincludeN7(7mmol/L),NIO(10mmol/L),N13(13mmol/L)andN16(16mmol/L)weredesigned.[Result]Nit
5、rogennutrientleveltreatmentshowedsignificanteffectsonleafai'eaincreased.melonhadlarger1earareaunderlowernitrogennutrientleve1treatmentconditionthanhighernitrogennutrientlevelinseedlingstage.melonhadlargerleafareaundermediumnitrogennutrient1eveltreatmentconditionthanothernitrog
6、ennutrientleve1instemgrowthperiod.melonhadlargerleafareaunderhighernitrogennutrientleve1treatmentconditionthan1owernitrogennutrientinpollinationperiod.Solublesolidsandsolublesugarcontentsoffruitwereincreasedsignificantlybyapplyingnitrogennutrientinmiddleperiodoffruit.Solubleso
7、lidsandsolublesugarcontentsoffruitwereincreasednosignificantlybyapplyingnitrogennutrientinharvestperiod,evenmaybegrowthwasinhibited.Vccontentsoffruitoflownitrogenlevelwashighersignificantlythanthatofhighnitrogenlevel,yieldwasinhibi—tedbyhighnitrogenleve1.『Conclusion]Theeconomi
8、ceffectreachedthehighestpointintreatmentwhichnitrogennutrient