What kind of weeding should be used in corn seedling stage?

What kind of weeding should be used in corn seedling stage? Please introduce that the weeding effect of Yunongle herbicide in maize seedling stage is very good. Yunongle, also known as nicosulfuron, its processing dosage form is 4% suspending agent, and the dosage of 4% Yunongle suspending agent is 1.5 liters per hectare. The specific application methods are as follows: first, the application period: 3-5 leaf stage after corn seedling, 2-4 leaf stage of annual weed, before 6 leaf stage of perennial weed, when most weeds come out, the weeding effect is the best and it is safe for corn. Yunongle not only has good stem and leaf treatment activity, but also has the effect of soil sealing and killing weeds. Therefore, the pesticide should not be applied too late, the weeds would be large and the resistance would be enhanced. 2. Control objects: barnyardgrass, wild oat, dogtail grass, golden bristletail grass, horse tang, sophora grass, wild millet, Polygonum wilfordii, Polygonum polygonum, Polygonum curly, amaranth, Solanum nigrum, Elsholtzia splendens, water thorn needle, shepherd's purse, Xanthium, abutilon, duckweed, wolfweed, broccoli, blue cabbage, bauhinia, Artemisia, chili, thistle, borage and other annual weeds and perennial broad-leaved weeds. It has good effect on Chenopodium, Chenopodium, ground skin, weasel flower, Reed and so on. Third, the application technology: when the soil moisture and air temperature are suitable, it is beneficial to the absorption and conduction of weeds to Yunongle. Long-term drought, low temperature and air relative humidity less than 65% should not be applied. Generally speaking, the pesticide should be applied with low temperature and wind in the morning and evening, and it is best to add surfactant in the case of drought. In the case of long-term drought, if there is rain in the near future, the field humidity will be improved after the rain, and then the pesticide will be applied after irrigation. Although the application time is delayed, the weeding effect will be better than that before the rain. Artificial spraying is best to choose fan-shaped sprinkler, spray along the ridge, spray one ridge at a time, determine the height, pressure and walking speed of the sprinkler, and can not shake the spray left and right to ensure uniform spraying. The amount of pesticide applied in the seedling belt should be calculated according to the ridge distance and the spraying range, that is, the actual spraying area. After application, combined with mechanical ploughing, strengthening field management is beneficial to the control of weeds in the later stage. 4. Mixed use: using 4% Yunongle 0, 75 liters per hectare plus 72% 2Magne4-butyl 375 ml plus 40% atrazine 2 liters, adding 1% vegetable oil synergists such as Kuaide 7, Xindebao, Colette, Hesen, etc., to accelerate the absorption and conduction rate of weeds to Yunongle and other herbicides, there is a significant synergistic effect (corn varieties can be used only after sensitivity identification). Stable efficacy can also be obtained under drought conditions. When the weeds are small and the moisture is good, the use of jade agriculture is low, while the weeds are large and the amount is high under drought conditions. Good efficacy and safety can be achieved by mixing 70% Seike 100 grams per hectare with 4% Yunongle 0,751,0 liters. The amount of liquid spraying is 300 litres per hectare for artificial knapsack sprayers and 150 litres for tractor sprayers. Can not carry out ultra-low capacity spray, can not use hand-held ultra-low capacity sprayer and knapsack mobile sprayer such as Taishan-18, Dongfanghong-18 and so on. Fifth, note: the following crop rotation is harmful to beet, cabbage, spinach and so on. Click to get more herbicide application techniques