| 摘要 |
The invention relates to chemical means for combating weeds, specifically to aqueously suspended herbicide compositions based ?n pyrimidine derivatives, for example sodium 2,6-bis-(4,6-dimethoxypyrimidin-2-yl) oxybenzoate, which can b? used for treating rice crops. The invention is directed towards producing ? novel suspension concentrate of ? herbicide composition based ?n pyrimidine derivatives, said composition having high physicochemical and operational properties, in particular low surface tension and limiting wetting angle values and reduced corrosive activity in relation to structural materials. The above-mentioned technical result is achieved in that the suspension concentrate of the herbicide composition comprises ? combination of two agro-chemically active components 2,6-bis-(4,6-dimethoxypyrimidin-2-yl) oxybenzoic acid and sodium 2,6-bis-(4,6-dimethoxypyrimidin-2-yl) oxybenzoate with carbamide, wherein the molar ratio of carbamide to the active component is 0.93 - 1.79. The suspension concentrate of the herbicide composition comprises ? complex salt with carbamide in the presence of oxyethylidenediphosphonic acid and/or ? disodium salt of ethylenediaminetetraacetic acid and at least ?n? of the agro-chemically active components. The surface tension is 32 N/m*10?, the limiting wetting angle: initial - 540, final - 300, the corrosion rate of ???b?n steel - 0.00152 g/m2 hour, and the permeability of the ???b?n steel - 0.0011 mm/year. |
