Three methods for chemical weeding of rapeseed

No-tillage treatment. Before the sowing of no-tillage rapeseed, the use of an efficient and broad-spectrum herbicide for killing can control the damage of the emerged weeds and reduce the competition between weeds and rapeseed. Herbicides are available in 20% paraquat water 150-200 ml/mu, 41% glyphosate isopropylamine saline 240-360 ml/mu or 20% paraquat diquat fasting agent 150-200 ml/mu.

Pre-emergence or pre-transplant soil treatment. Available 90% acetochlor EC 50-80 ml/mu, 72% Propylamine EC 100-200 ml/mu, 50% Hypertonic Isoprolonge WP 100-125 ml/mu, looking at rape field Aegilops falciparum, Cinnamomum falciparum, and shredded rice bran all have better control effects. For the control of grass weeds and broad-leaved weeds can also use compound 36% oxadiazepoxide acetochlor EC 125-200 ml / acre and 52% oil grass Qing (butachlor pomepron) suspension 200-300 Ml/acre.

Post-emergence stem and leaf treatment. Control of grass weeds is generally applied in weeds 1-4 leaves and grass, can be used 5% quizaloprene EC 50-60 ml / acre, 15% fine stable to kill EC 30-50 ml / mu, 10.8% high-efficiency fluorine Phosphate hydrangea 20-30 ml/mu, 24% clethodim 10-20 ml/mu, 10% propylfenugone suspension 30-35 ml/mu, 15% clodinafop acid 20-27 ml/mu or 6.9 % Metolachlor 40-50 ml/mu, good control effect on aphrodisiac, wild oats. Prevent broad-leaved weeds, such as broad-leaved weeds, bracken grass, broken rice bran, etc., to use 50% herbicides in addition to 30-50 ml/mu; in addition to 70% clopyralid, 70% clopyralic acid can be used to control rice and leeks. -7 ml/mu, the effect can reach more than 90%. Weed control compounds for grasses and broad-leaved weeds can be used 17.5% grass removal spirit, refined quizalofop EC 100 ml/mu, 41% dichlorisol WP 30-100 ml/mu; 14.5% fluorinamine Herbicides Weeding Powder 50-60 ml/mu, 12% clethodim, grass-removing spirit EC 150-250 ml/mu.

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