In recent years, vegetable diseases in greenhouses have been more serious. Farmers have to take medicines almost every two to three days, but it is still difficult to control. Instead, it has increased the residues of vegetable drugs, which can be described as harming others. Many vegetable farmers do not know that vegetables are infected with diseases, basically from the soil. Therefore, whether it is possible to prevent and control soil-borne diseases is the key to the success of greenhouse vegetable cultivation.
To prevent and control soil-borne diseases, we must do "mainly prevention, comprehensive prevention and control" and do the following:
1. Taking advantage of the good sealing property of the greenhouse, when the indoor crops are changed in the summer season, technical measures such as flooding, burning, and tempering chambers are adopted to remove residual bacteria from the indoor soil to prevent disease infection.
2, strictly prevent the introduction of bacteria and fertilizer into the greenhouse; the applied organic fertilizer must be treated with high temperature treatment of the plastic film covered in the summer season, and the biological bacteria are fully decomposed, and then sprayed and sterilized with 3000 times of carbendazim liquid before being applied.
3. When the management personnel enter the room, disinfection and disinfection shall be carried out with lime surface disinfection. It is strictly forbidden for outsiders, especially the management personnel of other greenhouses, to enter the room to prevent other greenhouse disease cross infection and outdoor pathogens from entering the greenhouse.
4. When raising seedlings, it is necessary to use sterile base to prepare nutrient soil, and use 3000 carbendazim liquid to spray nutrient soil carefully to completely kill the remaining bacteria in the soil. In addition, many diseases are caused by the seeds. Before the seedlings, they must be immersed for 10 to 30 minutes with 3000 times of carbendazim or potassium permanganate or 10% trisodium phosphate to kill the bacteria.
5. When the seedlings are transplanted, the seedling bed and seedlings should be sprayed with 3000 times of carbendazim plus 2000 cyhalothrin solution or 2% avermectin solution to make the seedlings enter the room. After planting, use 1500 times of biological bacteria to fill the roots, or 3000 times of carbendazim liquid to fill the roots, each plant 100~200 ml; increase roots and strong sputum, enhance the disease resistance and adaptability of the plants, so as to reduce the incidence or not Onset.
6. Adjust the relationship between vegetative growth and reproductive growth of plants, maintain the growth of plants, and improve the disease resistance of crops. Once the disease is discovered, it is necessary to take decisive measures against the type of disease, and then take the medicine and resolutely eliminate it. Never let it grow and spread.
The above are about the prevention and control measures of diseases related to greenhouse vegetable cultivation. I hope to have some help for everyone. Please pay attention to the Hui Nong School for more details.
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