When you enter the greenhouse vegetable production area, you will always see piles of stems and vines, old leaves, dead leaves, diseased leaves, diseased fruits, diseased plants, etc. around the village head, land, shed, roadside, and ditch. The main source of many dirty land in the vegetable area. This is also a habitat for pathogens and an important source of infection for diseases. Plant disease must have three elements, one is not the only disease. The first is that there must be a plant parasitic to the host. Second, there must be pathogenic microorganisms that can infect plants and cause disease. The third is the appropriate environmental conditions such as temperature, humidity and other conditions. We have planted a large number of vegetable crops, and we have a host on which pathogens depend. Temperature, humidity, and light conditions are natural phenomena. If a large number of pathogens are present, diseases will occur. We can go through this thoroughly. Clean up the pastoral areas to reduce pathogens overwintering and summering, in order to reduce pathogens, so as to achieve the purpose of disease prevention. In the management of vegetables, vegetable growers will remove the diseased leaves and fruit and other wastes. These diseased leaves and diseased fruits carry one or more pathogenic bacteria. If encountered, the temperature and humidity will be conducive to the development of these pathogens. When the environmental conditions, it will spread the infection. Many vegetable farmers only know how to spend money on medicine to cure diseases. As a result, the money is not spent, the power is not less, the disease is not effectively controlled, or the effect is poor. As the saying goes: "The knife wound medicine is better than no injury." Although there are a wide variety of therapeutic drugs on the market today. However, once the disease occurs, good medicine is used and the growth of vegetables has also been affected. We advocate the principle of prevention and comprehensive prevention. The correct treatment of vegetable waste and the means to reduce the incidence index are an important part of vegetable disease prevention. How to deal with waste scientifically? First, in the growing season of vegetables, for a small number of soil-borne diseases, such as wilt, bacterial wilt shed, it is necessary to remove the diseased plants in a timely manner to bring them out of the shed or burned, and to carry out the surrounding soil. Disinfection treatment, timely removal of diseased leaves and diseased fruits from management, or placing them in biogas to produce fertilizer. The second is that the vegetable waste that is cleared after the pull-out park can be brought to the open area away from the vegetable shed, and burned or dig deep. Can also be crushed, mixed with soil, human fecal urine covered with plastic film after high-temperature tanning, after 1-2 seasons, to be completely fermented and decomposed for soil fertilizer, green manure after use. Third, there are conditions for the use of vegetable waste to engage in straw gasification, waste reuse, turning waste into treasure. The fourth is to sell vegetables and pick wastes on weekdays. When the vegetable waste is concentrated and burned, it must be kept away from the greenhouse. The depth of coverage should reach 40 cm or more in order to reduce disease, use less medicine and no drugs, and produce high-quality and harmless vegetables.
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