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1、http://www.tslhjd.com/http://www.tamingda.com/http://www.ylqzjpj.com/http://www.tongfageo.com/雜交玉米高產(chǎn)制種的技術(shù)措施玉米雜優(yōu)品種具有高產(chǎn)、抗性強(qiáng)等優(yōu)點(diǎn),所以在玉米種植區(qū),種植雜優(yōu)品種已成為提高產(chǎn)量及增加農(nóng)民收入的重要途徑。為了提高玉米雜交制種產(chǎn)量,探討玉米雜交制種高產(chǎn)技術(shù),我所進(jìn)行了三年制種試驗(yàn)。產(chǎn)量由過去的1200kg/hm2提高到現(xiàn)在的2325kg/hm2,增產(chǎn)93.75%。現(xiàn)將高產(chǎn)制種技術(shù)介紹如下。Cornhybridvarietyhasthead
2、vantagesofhighyield,strongresistance,sointhecornbelt,plantingmixedoptimalvarietieshasbecomeaimportantwaytoimproveyieldandincreasefarmers'income.Inordertoimprovethecornhybridseedproduction,high-yieldmaizehybridseedproductiontechnique,Iconductedthreeyearsbreedingtest.Yieldincreas
3、eby1200kg/hm2tonow2325kg/hm2,increase93.75%.Nowthehigh-yieldingseedproductiontechnologyintroducedasfollows.1栽培措施1culturalpractices1.1選地及整地1.1chooseandsitepreparationhttp://www.tslhjd.com/http://www.tamingda.com/http://www.ylqzjpj.com/http://www.tongfageo.com/選隔離條件較好,土壤肥力和光照條件較好
4、,集中連片,有排灌條件,保水保肥力強(qiáng)的地為制種地,并做到精細(xì)整地,畦面無大土塊,無雜草,無作物殘根,達(dá)到松、細(xì)、平。Choosebetterisolationconditions,soilfertilityandlightconditionsaregood,concentrated,irrigationanddrainageconditions,strongretentionoffertilityoftheearthfortheseed,anddothefinesoilpreparation,nobigclods,strip,noweeds,nore
5、sidualrootsofplants,andtoloose,thinandflat.1.2重施底肥,增施磷鉀肥1.2returntofertilizers,increasingunderphosphorusapplication制種地要求每畝施優(yōu)質(zhì)農(nóng)家肥1500~2000kg、鈣鎂磷50kg、鉀肥10kg。提高植株的抗病能力。Seedproductiontohigh-qualityfarmyardmanureapplied1500~2000kgperacre,50kgcalciummagnesiumphosphate,potash,10kg.Imp
6、rovetheplantdiseaseresistance.1.3合理安排群體結(jié)構(gòu)http://www.tslhjd.com/http://www.tamingda.com/http://www.ylqzjpj.com/http://www.tongfageo.com/1.3arrangegroupstructure父母本行比1:5,大行距90cm,小行距40cm,株距25cm,父本留雙株,母本間隔留單雙株,每畝母本4500株,父本1500株。Parentsbankthan1:5,bigspace,90cm,40cmsmallspacing,plan
7、tingdistance25cm,maleparentfordoublestrains,betweenfemaleparenttostaysingleanddoublestrain,femaleparentper4500plants,1500strainsofmaleparent.1.4合理確定播種期1.4reasonableseedingtime玉米各生育階段所需的光、溫、水必須與當(dāng)?shù)氐臍夂驐l件相適應(yīng),才能正常生長(zhǎng)。播種過早,低溫陰雨天氣易造成爛芽;播種過遲,抽雄吐絲遇梅雨高濕氣候不利于授粉,影響結(jié)實(shí)率。在賀州市農(nóng)科所(信都鎮(zhèn)),早造制種可在2月下
8、旬播種,利用地膜覆蓋育苗效果較好。Cornlight,temperature,growthstageandm
