江西农业学报
江西農業學報
강서농업학보
ACTA AGRICULTURAE JIANGXI
2014年
7期
45-49,54
,共6页
陈培红%朱祥林%杨本香%周庆高%李秀钰%宋立妹%张军民
陳培紅%硃祥林%楊本香%週慶高%李秀鈺%宋立妹%張軍民
진배홍%주상림%양본향%주경고%리수옥%송립매%장군민
水稻浸种剂%水稻恶苗病菌%水稻干尖线虫%抑菌活性%防治效果
水稻浸種劑%水稻噁苗病菌%水稻榦尖線蟲%抑菌活性%防治效果
수도침충제%수도악묘병균%수도간첨선충%억균활성%방치효과
Rice-seed-soaking agent%Fusarium verticillioides%Aphelenchoides besseyi%Inhibitory activity%Control efficiency
采用菌丝生长速率法和浸渍法在室内测定了戊唑醇、氟啶胺、咯菌腈和杀螟丹及其混配剂对水稻恶苗病菌菌丝生长的抑制活性和对水稻干尖线虫的杀虫活性，并计算混剂的共毒系数。结果表明：戊唑醇、氟啶胺、咯菌腈和杀螟丹抑制水稻恶苗病菌菌丝生长的EC50值分别为0．3097、0．3342、1．0068和2077．27μg/mL；杀灭线虫的LD50值分别为＞2000、＞2000、＞2000和22．1177μg/mL。戊唑醇∶氟啶胺∶杀螟丹和戊唑醇∶咯菌腈∶杀螟丹按1∶2∶2的比例混配后对恶苗病菌的抑菌活性具增效作用，对干尖线虫的杀虫活性具相加作用。按此配比加工的12．5％戊唑醇·氟啶胺·杀螟丹WP和12．5％戊唑醇·咯菌腈·杀螟丹WP按1∶1000倍或1∶1200倍液浸种48 h对水稻恶苗病的防治效果较好，对水稻种子发芽和成苗安全。
採用菌絲生長速率法和浸漬法在室內測定瞭戊唑醇、氟啶胺、咯菌腈和殺螟丹及其混配劑對水稻噁苗病菌菌絲生長的抑製活性和對水稻榦尖線蟲的殺蟲活性，併計算混劑的共毒繫數。結果錶明：戊唑醇、氟啶胺、咯菌腈和殺螟丹抑製水稻噁苗病菌菌絲生長的EC50值分彆為0．3097、0．3342、1．0068和2077．27μg/mL；殺滅線蟲的LD50值分彆為＞2000、＞2000、＞2000和22．1177μg/mL。戊唑醇∶氟啶胺∶殺螟丹和戊唑醇∶咯菌腈∶殺螟丹按1∶2∶2的比例混配後對噁苗病菌的抑菌活性具增效作用，對榦尖線蟲的殺蟲活性具相加作用。按此配比加工的12．5％戊唑醇·氟啶胺·殺螟丹WP和12．5％戊唑醇·咯菌腈·殺螟丹WP按1∶1000倍或1∶1200倍液浸種48 h對水稻噁苗病的防治效果較好，對水稻種子髮芽和成苗安全。
채용균사생장속솔법화침지법재실내측정료무서순、불정알、각균정화살명단급기혼배제대수도악묘병균균사생장적억제활성화대수도간첨선충적살충활성，병계산혼제적공독계수。결과표명：무서순、불정알、각균정화살명단억제수도악묘병균균사생장적EC50치분별위0．3097、0．3342、1．0068화2077．27μg/mL；살멸선충적LD50치분별위＞2000、＞2000、＞2000화22．1177μg/mL。무서순∶불정알∶살명단화무서순∶각균정∶살명단안1∶2∶2적비례혼배후대악묘병균적억균활성구증효작용，대간첨선충적살충활성구상가작용。안차배비가공적12．5％무서순·불정알·살명단WP화12．5％무서순·각균정·살명단WP안1∶1000배혹1∶1200배액침충48 h대수도악묘병적방치효과교호，대수도충자발아화성묘안전。
The inhibitory activity of Tebuconzole , Fluazinam, Fludioxonil, Cartap, and their mixtures to the hyphal growth of Fusarium verticillioides Nirenberg, and their nematicidal activity to Aphelenchoides besseyi were tested in laboratory by using mycelial growth rate method and dipping method , respectively, and the co-toxicity coefficient (CTC) of their mixtures was determined by u-sing Sunyunpei's method.The results showed that the EC50 values of Tebuconzole, Fluazinam, Fludioxonil and Cartap against the hyphal growth of F.verticillioides were 0.3097, 0.3342, 1.0068 and 2077.27 μg/mL respectively, and their LD50 values against A.besseyi were more than 2000, more than 2000, above 2000, and 22.1177μg/mL respectively.Both the mixture of Tebuconzole+Fluazinam +Cartap (1∶2∶2) and the mixture of Tebuconzole +Fludioxonil +Cartap (1∶2∶2) had the best inhibitory effi-ciency on the hyphal growth of F.verticillioides and the best nematicidal efficiency on A.besseyi.In the field test, using the 1000-fold solution of 12.5%Tebuconzole· Fluazinam· Cartap (1∶2∶2) WP or the 1200-fold solution of 12.5%Tebuconzole· Fludi-oxonil· Cartap (1∶2∶2) WP to soak rice seeds for 48 hours had better control efficiency on bakanae disease of rice , and these two kinds of seed-soaking agents were safe to the seed germination and seedling formation of rice .
