In order to prepare pyroxasulfone 40％SC with excellent performance,the wetting dispersant and thickener were screened to determine the optimal formulation:40％pyroxasulfone,1.0％polycarboxylate,1.5％polyarylphenol polyether modified product,3.0％composite dispersant,0.2％xanthan gum,4.0％ethylene glycol,0.3％BIT,0.5％silicone defoaming agent,water up to 100％.The suspension rates is higher than 95％and decomposition rates is less than 1％after cold and hot storage.The dispersion is excellent,the water separation rate is low,and other indicators also met the SC standards.Field trials have shown that this product has a weed control effect of over 92％in wheat fields and is highly safe for wheat.
维普
万方数据