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1、微噴條件下不同灌溉量對芹菜產量品質的影響郭月萍(北京市大興區(qū)農業(yè)技術推廣站,北京102600)摘要;針對水資源日益短缺現(xiàn)狀,開展微噴條件下不同灌溉量田間試驗。試驗設定5個灌溉量處理(T+5;283mm/hm2;T+10;296mm/hm2;T-5;256mm/hm2;T-10;242mm/hm2;CK:269mm/hm2),進行春大棚小區(qū)試驗。結果表明:在植株生長勢中,灌溉量增加的太多或減少的太少會影響芹菜的生長,試驗中T-5處理在莖粗、葉柄數(shù)、干物質重方面表現(xiàn)較好,尤其在產量方面有顯著提高,T-5處理產量為85009.15kg/hm2,比CK處理增加16.
2、2%,在灌溉水利用率方面與CK處理間差異達到顯著水平。品質方面提升,蛋白質含量增加69.6%、、礦物質Ca含量增加6.6%,T-5處理1hm2產值為127513.7元,比CK處理多收入17808.9元,增收13.9%,純收入提高16.6%,同時節(jié)水率4.8%。因此說明本試驗設定的灌溉定額256mm/hm2為春大棚芹菜種植最優(yōu)灌溉措施。關鍵詞:微噴;灌溉量;芹菜;產量;灌溉水利用率;經(jīng)濟效益MicrojetundertheconditionofdifferentirrigationquantityaffectceleryproductionqualityGuo
3、YuepingDaxingDistrictagro-technicalextensionstationOfBeijing,?Beijing102600Inthispaper.Accordingtocurrentsituationofwaterresourcesshortage,tocarryoutthemicrojetundertheconditionofdifferentirrigationquantityfieldexperiment.Testsetfiveirrigationquantityprocessing(T+5,283mm/hm2;T+10;2
4、96mm/hm2;T-5,256mm/hm2;10;T-242-mm/hm2;CK:269mm/hm2),plottestforspringgreenhouse.Theresultsshowedthatintheplantgrowthpower,reducedirrigationquantityincreasetoomuchortoolittlewillinfluencethegrowthofcelery,T-5processingintestinthenumberofthickstems,petioles,thedrymatterweightperform
5、anceisbetter,Hasincreasedsignificantly,especiallyintheproductionofT-5processingproductionof85009.15kg/hm2,thanthatofCKtreatmentincreasedby16.2%,theirrigationwaterutilizationandCKtreatmentbetweenthedifferencereachedsignificantlevel.Qualityimprovement,proteincontentincreasedby69.6%,m
6、inerals,Cacontentincreasedby6.6%,thenitratecontentwasreducedby8.5%,T-5with1hm2outputvalueis127513.7yuan,17808.9yuanmorethanCKtreatmentandincrease13.9%,netincomeincreasedby16.6%,whilewatersavingrateof4.8%.Sothistestsettheirrigationquotaof256mm/hm2optimalirrigationforspringgreenhouse
7、celerycultivationmeasures.Keywords:microspray;Irrigationamount;Celery;Production;Irrigationwaterutilization;Economicbenefits芹菜在我國北方冬、春季廣泛種植,對土壤濕度十分敏感,土壤水分的供應狀況對其生長發(fā)育和產量及品質有很大影響[1]。近年來,春茬冷棚芹菜由于效益高、見效快,栽培面積迅速擴大,但在實際生產中,冷棚芹菜的栽培仍然繼續(xù)沿襲大田栽培經(jīng)驗,水分管理缺乏科學的量化指標[2],芹菜生長期灌水較為頻繁,但如果水分過多,通氣不好,又會使
8、芹菜根系發(fā)育及吸水能力受到影響,輕則生長遲緩,重則“