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时间:2020-03-27
《包膜尿素减量化施用对大白菜产量品质及土壤硝酸盐含量的影响.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、农业环境科学学报2011,30(2):316—321JoumalofAgro—EnVironmentScience包膜尿素减量化施用对大白菜产量品质及土壤硝酸盐含量的影响董亮,张玉凤术,于淑芳,杨力,陈广思(山东省农业科学院土壤肥料研究所,农业部新型肥料创制重点实验室,山东省肥料工程技术研究中心,济南250100)摘要:通过埋袋法及大田试验,研究了包膜尿素的养分释放规律及其减量化施用对大白菜产量、品质及土壤硝酸盐含量的影响。结果表明,包膜尿素的氮素释放与大白菜的氮素吸收基本吻合。与习惯施肥等几个处理相比,30%减氮包膜尿素处理
2、的大白菜产量最高,为39534.6kg·hm。2,20%减氮包膜尿素处理的大白菜Vc、还原糖含量最高,硝酸盐含量最低,有效提高了大白菜品质,减氮包膜尿素处理的大白菜含氮量较高,100%包膜尿素含磷、钾量较高;减氮包膜尿素处理减少了氮素向土体深层的淋溶损失,降低了环境污染风险。因此,减量施用包膜尿素能保证大白菜的产量、提高其品质,并有效减少硝态氮在土壤中的累积。关键词:包膜尿素;大白菜;产量;品质;土壤硝酸盐中图分类号:S145.6文献标志码:A文章编号:1672—2043(2011)02一0316一06Ef.fectsofDe
3、creasingCoatedUreaApplicationonChineseCabbage7sYield,QualityandSoilNitrateDONGLiang,ZHANGYu—feng木,YUShu—fang,YANGLi,CHENGuang—si(InstituteofSoilandFertilizer,ShandongAcademyofAgriculturalSciences;KeyLaboratoryofInVentionandManufactureofNewFertilizerMinistryofAgricul
4、tuI.ethePeople7sRepublicofChina;ShandongEngineeringResearchcenterforFertilizers,Jinan250100,China)Abstract:Nitrogenreleasemleofcoatedurea(CU)wasstudiedbycoVered—bagmethodande蠡fectsofcoatedurea(CU)applicationonchi—nesecabbage7syield,qualityandsoilnitrateweI.estudiedb
5、yfieldexperiment.TheresultsindicatedthatthenitI.ogenI.eleasemleofCUwasinkeepingwiththenitI.ogenuptakingruleofchinesecabbage.Chinesecabbage7syieldtreatedbydecI.easing30%nitI.ogenCUtreatmentwas39534.6kg。hm_2whichwasthehighestcompaI.edwithtraditional氨ertilizationtI.eat
6、mentetc.Chinesecabbage7sVccontentandsugarcontentweI.ethehighesttreatedbydecreasing20%nitI.ogenCUtI.eatment,andthistI.eatmentalsocouldI.educechinesecabbage7snitratecontentef_fectiVely.Chinesecabagge7snitrogenuptakingtreatedbydecreasingnitrogenCUtreatmentwerehighertha
7、ntraditionalf.ertilizationtreatmentand100%CUtreatment,chinesecabagge7sphosphorandpotassiumuptakingtreatedby100%CUtreatmentwerehigher.DecreasingnitrogenCUtreatmentcouldreducesoilnitrate7s1eachingtosoildepth,therefore,decreasingnitrogenCUtreatmentcouldreduceenVironmen
8、tp011utionrisk.Inaword,decreasingnitrogenCUtreatmentcouldensurechinesecabbage7syield,increasequalityandreducesoilnitrate7saccumula—tiondeg
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