The use of chemical herbicides is prohibited in organic vegetables. The main measure is manual weeding. In addition, weeds can be reduced through some supplementary measures. First, manual weeding Mainly refers to artificial cultivation and weeding. The artificial cultivation and weeding are highly targeted, which can not only eliminate the weeds between the rows, but also remove the weeds between the plants. The technology is simple and clean, and it can not only control weeds but also provide good growth conditions for vegetables. During the whole process of vegetable growth, we can carry out many times of manual cultivation and weeding according to needs. When weeding, we must seize the favorable opportunity to remove the early, small and complete, and can not leave the grass, so as to avoid causing trouble. Second, strengthen the cultivation and management of grassland Weeds are controlled through the use of cultivation techniques that limit the growth and development of weeds (rotation, green manure, fallow, etc.). Organic fertilizers must be fully cooked because some organic fertilizers contain weed seeds. Use the inhibitory effect of the former crops on weeds to create favorable production conditions for post-crop crops. It is also possible to spray brewing vinegar with an acidity of 4% to 10%, which can eliminate weeds and sterilize the soil. The spraying effect is better when the weeds are young. Third, cover grass Covering with straw can not only protect the earthworms, preserve heat, promote roots and fertilize fertilizers, but also has herbicidal effect. Coverage of about 400 kilograms per acre is subject to strict cover. Straw cover also has to grasp the coverage period. In addition, mulching can also be covered with a plastic film. With mulch film coverage, we must improve the quality of mulch film coverage, weed growth is less. Covering the plastic film must be tightened and flattened to close to the ground. If the cover film is of poor quality, it is not only easy to ventilate and leak air, but also has poor insulation, water retention and fertilizer retention, and it will promote the growth of weeds. The use of black mulch film coverage, the best anti-straw effect, but can not be used in addition to grassland film (because it contains chemical herbicides) cover weeding.
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How to weed the organic vegetable field