Rape cultivation: what are the grass hazards of planting rape?

What are the grass hazards of planting rape? What herbicides can be used for control? Please introduce the main weeds of dry stubble rape in rape field: pig calamity, wheat kernel bead, mother-in-law, Chenopodium, Artemisia annua, shepherd's purse, orchid, Cardamine, Kentucky bluegrass, wild oat, flat storage, wheat bottle grass, prickly cabbage, small spiral flower and so on. The main weeds of rapeseed in rice stubble are: cladospermum, porcine calamity, Niufan, Hedyotis chinensis, Dazhou, Cardamine, shepherd's purse, mother-in-law, rice Croucher and so on. Weeds in spring sowing rape field: the main weeds are wild oat, Chenopodium, Chenopodium, borage, big thorn, Polygonum curly, pig calamity, ion grass, Elsholtzia splendens, weasel petal, amaranth, paspalum, thin capsule grass, bauhinia and so on, among which wild oat is the most harmful. 2. Control methods of weeds in rape field 1. Sealing method before seedling after seeding in seedling bed or direct seeding field: because the damage time of weeds is short, and the dominance of vegetable seedling population is easy to be formed, it is only necessary to ensure the safe growth of vegetable seedlings in the early stage. Therefore, 60% butachlor EC 75 kg 120 ml, 50% alachlor EC 200 ml 250 ml or 48% alachlor EC 200 ml 250 ml can be selected, and 40 kg of water can be manually sprayed with 45 kg of water to prevent rape before seedling after sowing. 2. Chemical stubble killing method before sowing and planting: for plate stubble rape, the weeds that have germinated in the field after the previous crop harvest should be controlled or regenerated with biotic herbicides before planting. You can choose 41% glyphosate water agent 100 kg 150 ml or 20 g Wuchuan (paraquat) EC 200g 250 ml, or similar agents to manually spray 30 kg of water. 3. Soil treatment method during sowing date: for rape fields dominated by Gramineae weeds such as Niangmai in Japan, 48% trifluralin EC 100ml 150ml can be applied and mixed with soil 3-5 days before sowing, or 65% Metolachlor 45ml 60ml, 48% Metolachlor EC 50ml or 50% Acetochlor EC 75ml 100ml before seeding, before transplanting or the next day after planting. For rape fields mixed with Gramineae weeds, shepherd's purse, curly ear and other broad-leaved weeds, Duer or Guangmieling, or the mixture of propachlor and Guangmiling can be applied before sowing or planting of rape. 4. Post-seedling stem and leaf spray method: for rape fields dominated by Gramineae weeds, 10.8% high-efficiency Gai Cao Neng 20ml 30ml, 10% quizalofop EC 35ml 50ml, 6.9% Weiba EC 40ml 50ml, etc., to control weeds before the 4-leaf stage. For fields mainly composed of small nest vegetables, Artemisia annua, Croucher vegetables, mud paste vegetables, wild geranium, etc., 50% Gaoteke (herbicide) suspension 30ml 40ml or 33% herbicide (pendimethalin) EC 50ml can be used to spray 40kg of water in autumn and winter. For the fields mainly composed of hard grass and Kentucky bluegrass, 24% enoxone EC 20ml / mu can be used to control weeds at the stage of 3 leaves and 4 leaves. Click to get more rape planting techniques click to get more vegetable planting techniques