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1、第31卷第6期干旱地區(qū)農(nóng)業(yè)研究V01.31No.62013年11月iculturalResearchintheAridAreasNOV.2013不同灌溉制度對(duì)機(jī)采棉水分運(yùn)移、產(chǎn)量及品質(zhì)的影響姚名澤,成自勇,王峰2,周繼瑩(1.甘肅農(nóng)業(yè)大學(xué)工學(xué)院,甘肅蘭州730070;2.中國(guó)農(nóng)業(yè)科學(xué)院農(nóng)田灌溉研究所,河南新鄉(xiāng)453003)摘要:通過(guò)2012年南疆地區(qū)機(jī)采棉膜下滴灌大田試驗(yàn),以蒸發(fā)量為灌水控制指標(biāo),研究了灌水頻率和灌水量對(duì)土壤水分及棉花產(chǎn)量和品質(zhì)的影響,進(jìn)而分析了不同灌溉制度的節(jié)水、增產(chǎn)和調(diào)質(zhì)效果。
2、結(jié)果表明:相同灌溉頻率下,土壤剖面上含水率隨著灌水量的增加而增加;相同灌溉量下,灌水頻率為5d時(shí)在膜下0~60cm土層的平均土壤含水率較高;不同灌溉制度對(duì)棉花水分利用效率和灌溉水利用效率的影響具有顯著差異,當(dāng)灌水頻率為5d和作物一蒸發(fā)皿系數(shù)為0.6時(shí),棉花的水分利用效率和灌溉水利用效率分別達(dá)到1.96kg·mI3和3.08kg·m_。,可實(shí)現(xiàn)棉花生產(chǎn)的節(jié)水、高產(chǎn)和優(yōu)質(zhì)。關(guān)鍵詞:機(jī)采棉;膜下滴灌;灌溉頻率;灌水量;土壤水分;產(chǎn)量;品質(zhì)中圖分類號(hào):$274.1;$562文獻(xiàn)標(biāo)志碼:A文章編號(hào):1000
3、—7601(2013)06-0067—06Efectofdiferentirrigationregimestothesoilwatertransport,yieldandqualityofcottonbymachine-pickingYAOMing—ze,CHENGZi—yong,WANGFeng2,ZHOUJi—ying(1.CollegeofEngineering,GansuAgriculturalUniversity,Lanzhou730070,China;2.FarmlandIrrigat
4、ionResearchInstitute,ChineseAcademyofAgriculturalSciences,Xinxlang,453003,China)Abstract:Throughthefieldexperimentofdripirrigationunderfilmmulchofcottonbymachine-pickinginsouthernXinjiangin2012,takingtheevaporationasfortheirrigationcontrolindex,hasres
5、earchedtheinfluencesofirrigationfre-quencyandirrigationquotatothesoilmoisture,cottonyieldandquality,andthenanalyzedtheeffectsofwatersaving,yieldincreasingandquali~adjustingbydifferentirrigationregime.Theresuhsshownthat:Underthesameirrigationfrequency,
6、thesoilwatercontentincreasedwiththeincreaseofirrigationamount;Underthesameirrigationamount,whenirrigatedfrequencywas5days.theaveragesoilmoisturecontentinsoillayerof0~60cmunderfilmmulchwashi曲er;Effectofdifferentcottonirrigationregimesonbothwateruseefic
7、iencyandirrigationwateruseefficiencyhavesignificantdifference.WhentheirrigatedfrequencyWas5daysandcrop—evaporationpancoefficientwas0.6,thewateruseeficiencyandirrigationwateruseefficiencyofcottonwerereached1.96kg。mand3.08kgm一.respectively.Thecottonprod
8、uctiongoalsofwatersaving,highyieldandhighqualitycanbeachieved.Keywords:cottonbymachine—picking;dripirrigationunderfilmmulch;irregationfrequency;irrigationquota;soilmoisture;yield;quality棉花是新疆最重要的經(jīng)濟(jì)作物,種植面積和皮具體形式,不同布設(shè)方式不但影響滴灌帶與地膜的棉產(chǎn)量連續(xù)18年位居全國(guó)首位l