广西桑树线虫病害调查与桑根结线虫病的防治-研究

《广西桑树线虫病害调查与桑根结线虫病的防治-研究》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、200克／升丁硫克百威乳油、40％毒死蜱乳油、10％灭线磷颗粒剂、5％硫线磷颗粒剂、0．5％阿维菌素颗粒剂、5％甲维盐水分散粒剂。推荐4kg／亩穴施的0．5％阿维菌素颗粒剂在临近桑叶采收期时使用；3kg／亩穴施5％硫线磷颗粒剂和4kg／亩穴施的10％灭线磷颗粒剂可以在桑园生产期用，但要比采桑叶提前半个月以上，先采少量桑叶喂蚕，确认无毒后再大面积使用；氯虫苯甲酰胺200克／升悬浮剂、10％噻唑膦颗粒剂、2．5亿个孢子／克厚孢轮枝菌微粒剂、200克／升丁硫克百威乳油和40％毒死蜱乳油则不推荐使用。关键词：桑树；线虫病调查；南方

2、根结线虫；抗性筛选；药剂防治InvestigationsofPlantnematodesandControlofRoot-knotNematodesonMulberryinGuangxiQiaoLiya(CollegeofAgriculture，GuangxiUniversity,Nanning530004，China)AbstractPlantnematodesweresurveyedinsomemulberrygrowingareasinYizhou，XiangzhouandHengxianofGuangxiinord

3、ertostudytheirspeciesanddominantspecies·Fourspeciesandninegeneraofplantparasiticnematodeswereidentified：Meloidogyneincognita，Helicolylenchusexallus，Criconemellainformis，Paratylenchussp．，Psilenchushilarulus，Filenchussp．，Tylenchorhynchussp．，Aphelenchussp．，Gracilacus

4、sp·，amongthem，Criconemellainformis，Paratylenchussp．，Psilenchus，Filenchussp．，Tylenchorhynchussp．，Aphelenchussp．，Gracilacussp．werereportedinGuangxiforthefirsttime．MeloidogyneincognitaWasthedominantspecies，(meanoflarvalpopulationWas123headsof2ndlarvaper100mlsoil)，Hel

5、icotylenchusexallusWasthesecorddominatedonef39．1headsper100mlsoil)，theotherswerealllowerthan10headsper100mlsoil．TheresuItshowedthat2500headsofMeloidogyneincognita2ndlarvaforeverymulberryisanappropriateinoculation．Guisangyou62、Sangteyou1werefoundtoberesistanttotheM

6、eloidogyneincognita，Sha2xlunl09、Sangteyou2andGuisangyoul2weresusceptible．AfterinfectedbyMeloidogyneincognita，theplantheight、leafnumberandleaffreshweightofthesusceptiblevarietiesmulberryweremoreaffected，leaflength、leafwidthwerelessaffected．Agronomictraitsoftheresis

7、tantvarietiesmulberrya11affectedlessthanthesusceptiblevarietiesmulberry．Everyagronomictraitofmulberryinpotexperimentwasaffectedmorethaninyieldexperiment．ThecontroleffectofCadusafos、Fosthiazate、Phosphorusexceed70％inbothpotexperimentandyieldexperiment，theothersabove

8、50％．Theresidualpoisonofnematicidesfromlongtoshort：Chlorantranil、Fostbjazate、Verticilliumchlamydosporium，Carbosulfan，Chlorpyrifos、Abamectin?Phosphoru岱?Ca