摘要
将多菌灵、硫磺原药按不同比例混配，在室内对小麦赤霉病菌（Ｆｕｓａｒｉｕｍｇｒａｍｉｎｅａｒｕｍ）和稻瘟病菌（Ｐｙｒｉｃｕｌａｒｉａｇｒｉｓｅａ）进行毒力测定。结果表明，不同比例混配的多硫对２种病菌菌丝生长速率均有明显的抑制作用，各配比与单体多菌灵和硫磺相比，有显著增效作用。在多菌灵和硫磺之比１２．５∶１２．５，１５∶１０和１０∶１５的３种混剂中，对小麦赤霉病菌的共毒系数分别为１１８．２，１０６．５和９８．２；对稻瘟病菌的共毒系数分别为１０５．６，１０１．１和９８．１。３种混剂的ＥＣ５０值，对小麦赤霉病菌分别为３７４９μｇ／Ｌ，３５６５μｇ／Ｌ和５３８９μｇ／Ｌ，单体多菌灵和单体硫磺分别为２４１５μｇ／Ｌ和２６８００μｇ／Ｌ；３种混剂对稻温菌的ＥＣ５０，分别为３３７５μｇ／Ｌ，３２２８μｇ／Ｌ和４００７μｇ／Ｌ，单体多菌灵和硫磺分别为２４３６μｇ／Ｌ和６６４０μｇ／Ｌ，试验证明，２５％（１２．５∶１２．５）的多菌灵、硫磺混剂共毒系数最大，增效最明显，为最佳配比。
In this research,the toxicity of several
mixtures,which were made by mixing up two original medicines (Baristin,Sulphur) according to
different proportions,has been tested on F.gramineaurm andP.grisea in the laboratory
respectively.The results show that each mixture of different proportion has inhibition effect to
the growing hypha and has notable synergistic effect compared to monomer Boristin or Sulphur.
Among the three mixtures with the proportions of Baristin to Sulphur being 12.512.5,1510 and
1015, the CTC of each mixture to F. graminearum is separately 118.2,106.5 and 98.2, and to
P.grisea is 105.6,101.1 and 98.1. The EC50 value of each mixture to P.graminearum is 3749
g/L, 3565 g/L and 5389 g/L, while the EC50 of monomer Baristin value is 2415 g/L and of
mononer sulphur is 26800 g/L; to P.grisea,the EC50 value of each mixture is 3375 g/L, 3228
g/L and 4007 g/L, while that of mononer Baristin is 2436 g/L and of mononer sulphur is 6640
g/L.Therefore the research suggests that the mixture
出处
《华中农业大学学报》
CAS
CSCD
北大核心
1999年第1期20-23,共4页
Journal of Huazhong Agricultural University
关键词
多菌灵
硫磺
赤霉病菌
稻瘟病菌
配比
Baristin, Sulphur, Fusarium
graminearum, Pyricularia grisea, mixed proportionwith the proportion of Baristin to Surphur
being 12.512.5 has maximum CTC value and most notable synergistic effect to F. graminearum
and P. grisea.
