Puqijing, Guyou, Fucaojing, etc. are commonly used millet herbicides , so what are their respective characteristics? What is the correct way to use millet herbicides? Let's follow the Xiaobian together. .
It is a common herbicide in millet, it is a wettable powder. Mainly through the weed rhizome absorption, the upper and lower two-way transmission, destroying photosynthesis, thereby killing weeds. Not susceptible to the environment such as rain, temperature and humidity. Can effectively prevent the crabgrass, beef tendon grass, thousands of gold, foxtail and so on.
Gu You (original Gucao Ling) is a new type of herbicide developed by Nankai University. It is also a list of sulfometuron. Monosulfuron-methyl herbicide is a common malignant refractory weed in northern winter wheat field. It is also a wettable powder. It is suitable for Xiaguzitian. An excellent and safe soil treatment herbicide. It has a certain inhibitory effect on spines, iron leeks, and monocotyledonous weeds such as crabgrass, foxtail, goosegrass, and alfalfa.
Pre-emergence herbicides are mainly applied to broad-leaved weeds in millet fields. Before the sowing, the soil spray is high. The drug has high activity and low dosage. The amount of land should be measured when applying the drug. The dosage should be accurate. Drug damage.
Correct use:
(1) Spraying period: Spraying in time before emergence of the millet, or spraying in the 3rd leaf stage of the millet before the weeds are unearthed, but at this time, it should be oriented and sprayed 25 cm from the ground, not sprayed to the millet heart. On the leaf.
(2) Dosage: The dosage is generally 100-150 g/mu. The climate is dry and drier, the dosage is higher when it is clay loam, the climate is rainy and humid, and the dosage of sandy loam should be slightly lower.
(3) Preparation method: use double dilution, the dosage is 100~150g per acre, firstly prepare the mother liquor into the mother liquor, when the surface is dry and the situation is worse, the water is 3 barrels, that is, 45 kilograms, the surface is wet and the moisture is good when the water is 2 barrels, spray Apply an acre of land.
(4) Spraying method: pay attention to the weather forecast before spraying, do not spray before the rain, otherwise, it will not reach the ideal release effect, but also re-spray. Second, the accumulation of water in the low-lying area will cause the valley. The seedlings are yellow and even dead, so it is best to spray them 72 hours before the rain. Spraying in front of the seedlings should be timely, not more than 2 days, the spraying should be uniform, leaving no dead angles, otherwise the control effect will not be achieved; spray before the 3 leaves in the seedling stage, the nozzle of the sprayer must be lowered to 20 ~ 25 cm from the ground. Directional spray the ground between the ridges, do not spray on the leaves of the valley seedlings. Do not arbitrarily increase or decrease the dose to avoid phytotoxicity. If it is other brands of chlorpyrifos, please use a small area test before large-area application.
Tips: After using millet herbicides, within seven days, it is best not spraying again, to avoid injury problems, pesticides want to get more knowledge, please pay attention to China Pesticide Network
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