二氯喹啉酸属激素型的喹啉酸类选择性较强的除草剂。使用剂型为50%可湿性粉剂,商品名有快杀稗、神锄、稗草亡等。一、防除对象。可防除稗草、鸭舌草、田皂角、水芹等,尤其对稗草具特效,对4-7龄的稗草也有高效,但对一年生莎草科杂草效果差,而多年生莎草则具抗药性。二、使用技术。秧田于秧苗2叶期后,稗草1-7叶期均可施用,以稗草2-3叶期效果较佳。每亩用商品量25克,稗草叶龄大,可适当增加用量。施药前排干田水,兑水 Quinclorac is a hormone-selective quinolinic acid-selective herbicide. The dosage form is 50% wettable powder, the product name is fast kill barnyardgrass, God hoe, barnyard grass death and so on. First, control objects. Can control barnyardgrass, monocotyledon, field saponin, cress, etc., especially for barnyardgrass special effect on the 4-7 age barnyardgrass is also effective, but the annual sedge weeds poor, and perennial sedge It is resistant. Second, the use of technology. Seedling in leaf 2 seedling stage, barnyard grass 1-7 leaf stage can be applied to barnyard grass 2-3 leaf stage better. 25 grams per mu with commercial products, barnyard grass leaf age, may be appropriate to increase the dosage. Drainage before spraying field water, watered