多菌灵·硫·三环唑混配对抑制水稻稻瘟病菌和纹枯病菌的协同增效作用

多菌灵、硫及三环唑混配成悬浮剂,对抑制稻瘟病菌的菌丝生长、分生孢子萌发、附着胞的形成、产孢能力及纹枯病菌菌丝生长等都具有较明显的协同增效作用,协同作用比率(SR)分别为1.64、5.58、4.30、1.81及1.73。混配剂集合了多菌灵、硫及三环唑的优点,并显示出耐雨水冲刷、持效期长的特点。田间试验亦表明其防病增产作用比较显著。

The Joint Synergetic Inhibition of Carbendazim-Sulphur-Tricyclazol Mixed suspension On Magnapaporthe grisea And Rizoctinia solani

Excellent results were obtained on the control of rice blast and sheath blight with the carbendazim, sulphur, tricyclazole mixed suspension concentrate in the preliminary experiments in field plots and in extensive application. The high control efficacy was shown to be due to the inhibition effects of hyphae growth, spore formation ,germination, appresoria formation,on the rice blast of M. gresea as well as the hyphae growth of R.solani .The joint synergetic ratios (SR) were 1.64,5.58,4.30,1.81,respectively, for the M. grisea and that was 1.73 for the R.solani.It Showed that the control efficacy was greatly increased by the mixture of the 3 chemicals. Because the mixture combined together the strongpoints of carbendazim, sulphur and tricyclazole, such as high dispersive, suspensive, adherent and leaching resistant, thus possessed a good residual performance.