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Prevention methods. Nursery seedbeds and nutrient soils are the key measures for controlling seedling diseases.
1, seedbed soil disinfection. 30% of seedlings or 50% carbendazim treatment of soil 8-10 grams per square meter.
2, nutrient soil disinfection. 30% of mycobacterial or 50% carbendazim were mixed in nutritious soil at a proportion of 0.30%.
3, seedlings seedlings sporadic occurrence of damping-off, damping-off disease, with 64% anti-virus or 58% Ruiduxue wettable powder 500 times spray control or 800-1000 times potassium permanganate irrigation control.
4. Transplanted seedlings should be rooted with 20% methyl-dichlorotoluene EC 1000 times solution or 30% seedling enemy 800 times solution.
5. When rooting occurs, the emphasis is on raising the ground temperature and avoiding the seedbed becoming too wet. The conditions can be used to raise seedlings in an electric hotbed. The seedbed temperature should be controlled at about 16°C. The temperature should be increased by warming and removing moisture, and the soil should be promptly released to promote new roots as soon as possible. .
Prevention and Control of Diseases in Seedling Stage of Vegetables and Greenhouses
The diseases occurring during the nursery of greenhouses and greenhouse vegetables such as cucumber, eggplant, pepper, persimmon, lotus dish, and cauliflower mainly include blight, damping-off, and rooting. Rhizoctonia solani can survive in soil for 2-3 years. The seedbed is warm and humid, with poor ventilation or leggy seedlings. The incidence of damping off disease is low temperature and high humidity. When the soil temperature is lower than 10°C and the humidity is high, It is not conducive to the growth of seedlings, and it is easy to induce damping-off; roots are a kind of physiological disease. When roots occur, new roots and adventitious roots do not occur in the roots, and the roots decay and rot and cause wilting in the ground, mainly because the seedbed temperature is too low. , Over watering or heavy disease in case of cloudy days.