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虎威是由英国卜内门化学公司开发的专用于大豆田防除阔叶杂草的选择性除草剂。通常在大豆三片复叶期、杂草2～4叶期进行茎叶处理,除草效果很好,对大豆安全。但是,如果使用不当,也会产生一定药害。据试验观察,药害的发生主要与以下因素有关: 1.施药量。每亩使用25％虎威60～80毫升,一般不会产生药害,如用量超过100毫升就可能产生药害。 2.土壤含水量。在土壤含水量25％以上的情况下施药,基本无药害。而在土壤含水量15～20％之间施药,药害发生较重。
Tiger Granville is the British Bu Neimen Chemical Company developed specifically for the control of broad-leaved soybean weeds in the selective herbicide. Soybean usually three-leaf phase, weeds 2 to 4 leaf stage stems and leaves treatment, weeding effect is very good, safe for soybeans. However, if used improperly, it will also produce some injury. According to experimental observation, the occurrence of phytotoxicity is mainly related to the following factors: 1. Application rate. Use 25% Huwei 60 ~ 80ml per acre, generally do not produce phytotoxicity, such as the amount of more than 100 ml may produce phytotoxicity. 2. Soil moisture content. In the soil moisture content of more than 25% of the pesticide application, basically no injury. In the soil moisture content of 15 ~ 20% of the pesticide application, heavy injury occurred.