再生水灌溉时期和方式对作物生长及品质的影响

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1、第二届全国农业环境科学学术研讨会论文集2007年7月再生水灌溉时期和方式对作物生长及品质的影响黄占斌，苗战霞，侯利伟，焦志华，马敏(中国矿业大学(北京)化学与环境工程学院，北京100083)摘要：采用北京高碑店污水处理厂再生水(二沉池出水)，以清水为对照进行二年玉米和大豆种植盆栽试验，比较再生水不同灌溉方式(纯灌、与清水混灌和交替灌)和灌溉时期(全生育期、生育前期和后期)下对作物生长、产量及品质影响。结果表明：再生水在玉米苗期灌溉对生长有一定抑制作用，但在拔节期后灌溉能明显促进玉米生长，不降低或有所增加玉米籽粒产量；再生水以纯灌和混灌方式，各个时

2、期灌溉都能促进大豆整个生育期生长，明显促进籽粒产量提高。再生水灌溉对玉米和大豆籽粒粗蛋白、粗淀粉无显著影响，但粗灰分效应有男4。再生水灌溉降低玉米籽粒铁含量。重金属铅和镉在玉米和大豆不同器官内含量不同，分布规律是含量：根>茎、叶>>籽粒．再生水灌溉玉米和大豆的籽粒铅和镉含量，均满足国家粮食安全标准，但再生水灌溉有增加大豆籽粒中镉含量的趋势。这些结果对评价再生水灌溉对作物生产影响及应用有重要参考。关键词：再生水；玉米；大豆；生长；品质；重金属EnhtonGrowthandQualityofCropstoIrrigationTimeandModeof

3、ReclaimedWaterHUANGZhan—bin，MIAOZhan-xia，HOULi—wai，J1AOZhi—hua，MAMin(SchoolofChemicalmidEnvironmentalEngineering．ChinaUniversityofMiningandTechnology-Beijing，Beijing100083．China)Abs打act：Theexperimentsusedpotmethodtocomparetheeffectongrowth，yieldandqualityofmaize(ZeamaysL)ands

4、oybean(Phaseol∞vulgⅢ,isL．)toirrigationtimetreatments．such∞wholegrowthperiod．ante—developmentperiodsodstep—developmentperiod,andirrigationmodetreatments，suchagallreclaimedirrigation,reclaimedwaterwithtapwatermixedirrigation，reclaimedwaterwithtapwaterrotatingirrigation，therecla

5、imedwaterisfromthedi-sinkingpoolinBeijingGaoBeidiansewageIreatmentplantBeijing．China,andthecontroltreatmentisusedtapwaterin2005-2006．Theresultsshowthatgrowthofmaizeinbreedings“gewⅡinhibitedatSomedegreewithreclaimedwaterirrigation，andafterjaimingstagewithreclaimedwaterirrigati

6、on．theFowthshowedapositiveeffect．andtheyieldofmaizenotdecrea8eorincreasealittledeFee．Tothesoybean,reclaimedirrigationormixedwithtapwaterirrigationatinanygrowthstageofsoybeanallenhancedthegrowth．andincreasedthegrainyield,markedly，Tothequalityofcrops．thesurveycertifiedthatthe酽n

7、dralqualityofcrudeproteinandcrudestarchinthegrainarenotsignificantdifferencehetwE∞thecontrolandthetreatmentsirrigatedwithreclaimedwater．onlycrudeashisdifferentinmaizeand”ybean．Theresidualquantityofheavymetalssuch∞Lead口b)andCadmium(Cd)variesgreatlywithdiffemntpartsofthecrop，wh

8、ichishigheatinroots，midgeinshootsandleav∞，andlowestingrain．However,t