New weeding technology abroad
2024-10-05 15:04:20
Photochemical Weeding French foreign scientists have successfully developed a photochemical herbicide that, when applied to the ground of wheat, corn and other crops, will automatically generate chemical reactions when it encounters sunlight, which can effectively kill the weeds. Without damaging crops. The degree of sensitivity of the current weeding plants to electrical currents depends on the amount of fiber and lignin contained in the plants. High currents can greatly damage weeds and are not harmful to crops. To this end, some countries have developed an electric current weeding device that can be installed on agricultural machinery and started to use it for large-scale high-voltage current weeding. Experiments in sugar beet and cotton fields showed that the method can remove 97% - 99% of the weeds, and the higher the voltage, the better the weeding effect. The plastic film weeding method adds a certain amount of herbicide in the production process of the plastic film, so that the covered ground can only grow crops and no weeds grow. At present, foreign countries have introduced a variety of colorless or colored weeding film, the use of the area is expanding. The g-herbicidal method utilizes the unique characteristics of different plants to eliminate certain weeds from a certain crop. According to the experiments of foreign scientists, sunflower can effectively inhibit the growth of wild weeds such as vine flowers and purslane; sorghum can inhibit the growth of wild weeds such as big bluestem, switchgrass, and commonweed; in crop fields or In Miaoyuan, interplanting man-made hemp can eliminate Xiaozhu; in the bamboo forest, man-made hemp can prevent the spread of bamboo whip.
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