Development On The WDG Of The Herbicides Of Ehtametsulfuron, Benazolin-ethyl, Quizalofop-thyl In The Rape Fields

The rape is the important oil crops in our country, and the harm is very serious in the rape fields by the weed. Ehtametsulfuron, benazolin-ethyl and quizalofop-thyl are the common herbicides which can remove the weed in the rape fields. The research which mix the three herbicides will study the water dispersible granule(WDG) of the mixing herbicides by the numbers. The results are:Mixing the three herbicides, we can enlarge the range of removing weed,reduce the cost of making herbicides,and get the herbicide which will be safe to the rape and the succeeding crops.Passing riddling tests ,we can finally confirm:when the quality proportion of the ehtametsulfuron, benazolin-ethyl and quizalofop-thyl is 18:3:1,the effect of the mixing herbicides is the best.Through the tests which mixing the three herbicides and making WDG which has a lot of values, we ultimately get the optimum proportion.The proportion is: the available component:66.0%; the wetting agent:2.5%;the disperser:7.0%;the bonder: 1.0%;the support:23.5.Passing the tests in the room,we ensure this WDG can enlarge removing ranges,and its removing effect will be better than the effect of the three herbicidesby theirselves,and the co-toxicity coefficient is 572.3 for the weed of the Gramineae, and for the weed of the broad leaves is 530.0,and the recommended concentration is 300g/ha.Through the tests of the security of the rape,we can get the results that the mixing herbicide will be safe when it use in the two-leaves phase and three-leaves phase. And through the tests of the security of the succeeding crops,we can also know the herbicide will be safe to the succeeding crops.Therefore ,the safe dosage of every succeeding crops is :the maximal safe concentration for the soybean is 150g/ha;for the peanut is 150g/ha;for the cotton is 15 g/ha;for the corn is 75g/ha;for the rice is 3.75g/ha;and for the radish is 15g/ha.The tests of the effect in the fields indicate, this WDG is a favorable herbicide for removing weed in the rape fields,and it not only can remove the weed of the Gramineae and the the weed of the broad leaves ,but also can have more benefits:...