Chemical weeding issues to be aware of
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The herbicide is used at the beginning of the weed, and the herbicidal effect is better than that when the grass is old. When the temperature is high before winter, the application is better than the low temperature in winter. Generally, the average daily temperature is not lower than 10 °C.
The high soil temperature and good moisture are conducive to the absorption of the drug and easy to exert its effects. Drought after treatment, poor sputum, its herbicidal effect is poor. After 12 hours of raining or winter irrigation, the application of herbicides such as metsulfuron-methyl, superstar, pucao, chloro-milon, wheat straw, isoproturon, oatmeal, oatmeal, and thrips can significantly improve the herbicidal effect.
Choose to use no wind and no rain, to prevent the liquid from drifting or losing, affecting the efficacy or harming nearby sensitive crops.
After the application is completed, the medicine should be cleaned in time. It can be washed alternately with vinegar, washing, washing powder and water for 3 to 5 times. After cleaning, the liquid should be properly disposed.
When using drugs, it is generally appropriate to add acid fertilizer or a little detergent to improve the efficacy.
The amount of medicine used in sandy land is generally reduced by about 1/3.