Diseases of vegetables seriously affect the quality and yield of vegetables. Therefore, it is an important measure to improve the yield and quality of melon vegetables by disinfecting seeds and preventing diseases.
1, seed disinfection Wen Tang soaking method. Applicable to simple disinfection of various vegetable seeds. Disinfect the seeds into 55 degrees warm water, the water volume is 3-5 times the seed volume, continue to stir 15-20 minutes, until the water temperature drops to 35 degrees, stop stirring, continue to soak 4-6 hours, and then germination . This method is beneficial to sowing seed before sowing, softening the seed coat or seed shell, can increase the seed germination potential, increase the germination rate of the seed, and has a good lethality to the fungus or bacteria attached to the seed epidermis, can reduce the melon vegetable The occurrence of seedling-like diseases is beneficial to seedlings and seedlings, and to increase production.
2, seed disinfection dry heat disinfection method. This method applies to tomatoes, eggplants and so on. The moisture content of the seeds was reduced to less than 7%, placed in an oven at 70-72 degrees, baked after 3 hours, and soaked with germination to kill pathogenic bacteria inside and outside the seeds. The technique required by this method is relatively high, and it is difficult to operate. It is only suitable for professional households with higher technical standards. This method has a good bactericidal effect and is completely bactericidal. It is especially good for the preventive effect of seeds that are carried within the seed coat.
3, seed disinfection hot water hot seed method. This method is applicable to seeds that are difficult to absorb water (such as wax gourd, watermelon, etc.). The water temperature is required to be 70-75 degrees. The water consumption is 3-5 times of the seed weight. The seeds must be fully dried. When hot seeds are used, 2 containers should be used. Topple back and forth, the first few movements should be faster, when the water temperature dropped to 55-60 degrees, instead of constantly stirring, keep this temperature 7-9 minutes better.
Seed disinfection liquid soaking method
Immerse the seed in the required concentration of the drug solution, remove it after 5-30 minutes, wash, air dry, or germinate a disinfection method. After soaking seeds, rinse them with clean water to avoid injury. The liquid dosage is 1 times of the seed weight. Commonly used agents are 1.0% copper sulfate or 1.0% potassium permanganate solution, 40% formaldehyde (formalin) 100 times and so on. Such as the control of hot pepper anthrax and bacterial spot disease, soaking with water for 4 - 5 hours, then soaking with 1.0% copper sulfate solution for 5__10 minutes, remove and wash with water to germination; control cucumber, watermelon anthrax and wilt disease, can be the first Seeds soaked with fresh water for 2-3 hours, then immersed in 100% formaldehyde 40%, 30 minutes after removal, washed with water after germination; prevention and treatment of tomato, eggplant brown vine disease, can be soaked with water for 3-4 hours , immersed in 40% formaldehyde 100 times liquid, remove it after 20 minutes, sealed in the container for 2-3 hours, then rinse with water to germinate sowing; control tomato, pepper virus disease, available 10% trisodium phosphate solution Seed soaking for 20 minutes at room temperature, remove and soak in water after washing.
Seed disinfectant and seed dressing method
Seed sowing with dry seeds, this method can be used. The dosage of the agent is generally 0.1% to 0.4% of the seed weight. Commonly used agents are 70% sodium propionate (dikeshone) or 50% procymidone (sulfacin), 50% carbendazim, 25% metalaxyl and others.