甘肃农业科技
甘肅農業科技
감숙농업과기
GANSU AGRICULTURAL SCIENCE AND TECHNOLOGY
2013年
7期
14-15,16
,共3页
周天旺%李建军%张新瑞%马永强%李继平
週天旺%李建軍%張新瑞%馬永彊%李繼平
주천왕%리건군%장신서%마영강%리계평
甘草褐斑病%发病动态%病情指数%防效%陇西县
甘草褐斑病%髮病動態%病情指數%防效%隴西縣
감초갈반병%발병동태%병정지수%방효%롱서현
Cercospora astragalis%Dynamic survey of incidence disease%Disease index%Control efficiency%Longxi county
在陇西县首阳镇进行了甘草褐斑病发生动态调查及药剂防治试验。结果表明,甘草褐斑病6月中旬开始发生,至8月上旬株发病率达100%,同时病害进入快速蔓延期;8月中旬病斑逐渐连片并开始大量脱落,病情指数快速增加,至9月上旬大部分田地50%植株叶片全部脱落。供试的6种杀菌剂对甘草褐斑病都具有一定的防治效果,第1次施药后7 d,以20%丙环唑微乳剂2000倍液和5%烯唑醇微乳剂1000倍液防效较好,分别为65.82%、64.41%;第2次施药后14 d,10%苯醚甲环唑微乳剂1500倍液和20%丙环唑微乳油2000倍液防效较好,分别为90.73%和85.34%。
在隴西縣首暘鎮進行瞭甘草褐斑病髮生動態調查及藥劑防治試驗。結果錶明,甘草褐斑病6月中旬開始髮生,至8月上旬株髮病率達100%,同時病害進入快速蔓延期;8月中旬病斑逐漸連片併開始大量脫落,病情指數快速增加,至9月上旬大部分田地50%植株葉片全部脫落。供試的6種殺菌劑對甘草褐斑病都具有一定的防治效果,第1次施藥後7 d,以20%丙環唑微乳劑2000倍液和5%烯唑醇微乳劑1000倍液防效較好,分彆為65.82%、64.41%;第2次施藥後14 d,10%苯醚甲環唑微乳劑1500倍液和20%丙環唑微乳油2000倍液防效較好,分彆為90.73%和85.34%。
재롱서현수양진진행료감초갈반병발생동태조사급약제방치시험。결과표명,감초갈반병6월중순개시발생,지8월상순주발병솔체100%,동시병해진입쾌속만연기;8월중순병반축점련편병개시대량탈락,병정지수쾌속증가,지9월상순대부분전지50%식주협편전부탈락。공시적6충살균제대감초갈반병도구유일정적방치효과,제1차시약후7 d,이20%병배서미유제2000배액화5%희서순미유제1000배액방효교호,분별위65.82%、64.41%;제2차시약후14 d,10%분미갑배서미유제1500배액화20%병배서미유유2000배액방효교호,분별위90.73%화85.34%。
The dynamic survey and chemical control of Cercospora astragalis were investigated in Longxi county. The dynamic survey results showed that Cercospora astragalis was happen in mid-june, early August incidence of disease to reached 100%, the disease into rapid spread at the same time, the scab shall gradually in mid August and start to fall off, disease index increase quickly, through early September, leaves in nearly 50% of all fall off . The control test results that 6 fungicide effected control Cercospora astragalis . The 7 days after first drug delivery, 20% propiconazole 1∶2 000 and 5% diniconazole 1∶1 000 control effect reached 65.82%、 64.41% respectively . The 14 days after second drug delivery, 10% of difenoconazole 1∶1 500 and 20% propiconazole 1∶2 000 control effect reached 90.73% and 85.34% respectively .