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What do you know about the scientific use of herbicides?
After the advent of herbs, it brought good news to farmers. Before the emergence of herbs, farmers had to pull out weeds that endangered crops by hand or hoe, which was labor-consuming and time-consuming. Usually the weeds in front are not cleared, and the weeds in the back will grow back. Especially in summer and autumn, a little relaxation will make the fields full of grass. At least it will reduce the yield of crops, and in the worst case, it may lead to crop failure.
After the advent of herbs, it brought good news to farmers. The utility model has the advantages of convenient use, quick effect, low cost and good effect, which can save a lot of planting and weeding time for farmers and greatly reduce the labor intensity of weeding in the field. However, after using herbicides in farmland, many farmers discard the used herbicide packaging at will, which has caused certain pollution to the environment and water sources.
Chemical weeding is also what we often say. Because this method is time-saving, labor-saving, economical and efficient, it has been used ever since it was introduced to China in 1950s. However, chemical weeding is like a double-edged sword, which has both advantages and disadvantages.
For example, the effect of herbicides is easily affected by soil conditions and rain erosion; Unreasonable use, easy to produce phytotoxicity and damage trees; In addition, long-term use of herbicides will not only increase the resistance of weeds, but also affect the ecological environment. Therefore, only relying on chemical weeding is not a wise choice.
Atrazine can control annual gramineous weeds and broadleaf weeds, and the control effect of broadleaf weeds is better than that of gramineous weeds. It also has a certain inhibitory effect on perennial weeds, such as Polygonum, Plum, Portulaca oleracea, Tang, tail grass, Niujincao and so on.
Crops used: corn, sorghum, orchard, sugarcane, soybean, peanut, cotton, rubber plantation, millet, wheat, rice, tea garden, etc. Note: When the soil moisture is good, the weeding effect is good. For the soil with poor soil moisture, increase the use of pesticides. Peach trees are sensitive to atrazine and should not be used in Taoyuan.
Problems in the application of pesticide before seedling in northern spring During the application of pesticide in northern spring (from late April to mid-May), there are often strong winds, drought and little rain. After applying herbicides, it is easy to fly or stay on the ground, and it is difficult to play a weeding effect because it can't touch weed buds. If there is no rain or irrigation after applying herbicide, mechanical measures should be taken to ensure the efficacy.
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