Skillful use of sterilized herbicides in Xiazhi Ma field

Weeds in Xia Zhi sesame field generally emerge 3-10 days earlier than sesame, and grow rapidly. You can make full use of the period before sesame emergence, use paraquat to control unearthed weeds, using 20% paraquat water agent 200 ml per mu plus 40 kg of water spray. The herbicide is a contact-killing herbicide, which can be quickly absorbed by plant leaves, so that photosynthesis and chlorophyll synthesis are quickly terminated. The leaves begin to change color 2-3 hours after administration, but can not be transmitted, so only part of the drug can be damaged. Drug contact with soil, passivation failure, no residue, no effect on sesame seedling emergence.