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ID:36797008
大小:1.05 MB
页数:41页
时间:2019-05-15
《水稻品种对稻曲病的抗性鉴定及稻曲病防治研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、摘要本文研究了水稻品种对稻曲病的抗性,药荆种类、防治适期、旆药器械等对稻曲病防效的影响。1鉴定了59个品种对稻曲病抗性,病情指数在0.I以下的品种有13个;0.1≤病情指数2、好,防效分别为91.88%、89.57%、86.24%和85.84%;每667Ⅲ2施用好力克43%SC9ml、12ml、15ml,分别比对照每667m'增产25.6kg、43.4kg、和55.5kg,增产幅度分别为4.72%、8.01%、10.24%。增产的主要原因是穗平实粒数增多、空秕粒减少,而千粒重变化不大。4水稻剑叶叶枕与倒二叶叶枕持平(零位)是防治稻曲病施药适期;不同的施药器械对药剂的防治效果有较大的差别,用机动喷雾器施药对稻曲病的防效高于手动喷雾器的防效,卫士一16型手动喷雾器施对稻曲病防效高于工农一16型手动喷雾器的防效。5采用五元二次回归正交3、旋转组合设计,研究栽培密度(X-)、施氮量(xz)、施氮期(XD、施药期(k)、施药量(XD五项农业措施对稻曲病的综合防治效应,结果表明:稻曲病的综合防治要特别重视施药时期,其次是施氮时期和施氮量,相对而言,施药量和栽培密度对稻曲病影响不大。关键词:水稻品种稻曲病抗性鉴定防治ABSTRACTTheresistanceidentificationandeffectofthekindsoffungicide,thetimeofspray,thekindsofsprayer,eto.tofalsesmutdisease(Ustilaginoideavirens(4、Cooke)Tak.)ofricewel'estudied.1Theresistancedegreeoffalsesmutdiseaseweretestedon59varietiesofrice.Theresultsshowedthat:thevarietiesamountofdiseaseindex<0.1wcl'e13;O.1≤diseaseindex<1were18;I≤diseaseindex<2were12anddiseaseindex>/2were16.2Two-linehybridriceweresusceptiblethanotherric5、e.Thediseasewasseverityifthedensityoftasselgramortheangleofthetopleafwiththestemwerebigger.ThediseaseseventyⅥ鸺positiverelationwiththeresistanceoffatherline.3Theefleetof30%ArmureEC20ml/667m2,43%HorizonSC15ml/667m2,30%AmaureEC15ml/667m2,43%HorizonSC12ml/667m2Were91.88%,89.57%,86.24%6、and85.84%respectivelytOfalesSmUtdiseaseofricewhenthericewastasseledbefore6days.UshlgHorizon9,12,15ml/667m2,couldincreasedoutput25.6,43.4and55.5kg/677m2andextentofincreasedoutputWere4.72%,8.01%and10.24%thanCKrespectively.4Thebesttimeofsprayingtofalsesmutdiseasewaswhentheleafbasedis7、;tiIn∞oftopleafandsecondleafwfft-ezero.ThedifferentsprayerforcontrolfalessmutdiseaseWel"e船ted,theeffectofmachinesprayerw孤thebest,thesecondwasWeishi·16Psprayer,thethirdwasGongnong·16sprayer.5Theintegrationeffectofgrowthdensity,nitrogenanaount,usingtimeofnitrogen,sprayingtimeandamou8、ntoffungicidetofalessmutdiseaseof
2、好,防效分别为91.88%、89.57%、86.24%和85.84%;每667Ⅲ2施用好力克43%SC9ml、12ml、15ml,分别比对照每667m'增产25.6kg、43.4kg、和55.5kg,增产幅度分别为4.72%、8.01%、10.24%。增产的主要原因是穗平实粒数增多、空秕粒减少,而千粒重变化不大。4水稻剑叶叶枕与倒二叶叶枕持平(零位)是防治稻曲病施药适期;不同的施药器械对药剂的防治效果有较大的差别,用机动喷雾器施药对稻曲病的防效高于手动喷雾器的防效,卫士一16型手动喷雾器施对稻曲病防效高于工农一16型手动喷雾器的防效。5采用五元二次回归正交
3、旋转组合设计,研究栽培密度(X-)、施氮量(xz)、施氮期(XD、施药期(k)、施药量(XD五项农业措施对稻曲病的综合防治效应,结果表明:稻曲病的综合防治要特别重视施药时期,其次是施氮时期和施氮量,相对而言,施药量和栽培密度对稻曲病影响不大。关键词:水稻品种稻曲病抗性鉴定防治ABSTRACTTheresistanceidentificationandeffectofthekindsoffungicide,thetimeofspray,thekindsofsprayer,eto.tofalsesmutdisease(Ustilaginoideavirens(
4、Cooke)Tak.)ofricewel'estudied.1Theresistancedegreeoffalsesmutdiseaseweretestedon59varietiesofrice.Theresultsshowedthat:thevarietiesamountofdiseaseindex<0.1wcl'e13;O.1≤diseaseindex<1were18;I≤diseaseindex<2were12anddiseaseindex>/2were16.2Two-linehybridriceweresusceptiblethanotherric
5、e.Thediseasewasseverityifthedensityoftasselgramortheangleofthetopleafwiththestemwerebigger.ThediseaseseventyⅥ鸺positiverelationwiththeresistanceoffatherline.3Theefleetof30%ArmureEC20ml/667m2,43%HorizonSC15ml/667m2,30%AmaureEC15ml/667m2,43%HorizonSC12ml/667m2Were91.88%,89.57%,86.24%
6、and85.84%respectivelytOfalesSmUtdiseaseofricewhenthericewastasseledbefore6days.UshlgHorizon9,12,15ml/667m2,couldincreasedoutput25.6,43.4and55.5kg/677m2andextentofincreasedoutputWere4.72%,8.01%and10.24%thanCKrespectively.4Thebesttimeofsprayingtofalsesmutdiseasewaswhentheleafbasedis
7、;tiIn∞oftopleafandsecondleafwfft-ezero.ThedifferentsprayerforcontrolfalessmutdiseaseWel"e船ted,theeffectofmachinesprayerw孤thebest,thesecondwasWeishi·16Psprayer,thethirdwasGongnong·16sprayer.5Theintegrationeffectofgrowthdensity,nitrogenanaount,usingtimeofnitrogen,sprayingtimeandamou
8、ntoffungicidetofalessmutdiseaseof
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