Control objects: Chlorpyrazosulfuron is mainly used to control broad-leaved weeds and sedge weeds, such as Cang ears, Mandola, ragweed, Amaranth, wild watermelon seedlings, Polygonum, purslane, Solanum vulgaris, Cassia, morning glory, Cyperus officinalis, etc. How to use: It can be applied before and after seedling. Pre-emergence application dosage is: 70-90 grams of active ingredients/ha; post-emergence: 18-35 grams of active ingredients/ha. corn field seedlings