1. Seed disinfection control Tomato leaf mold, spot blight, early blight, ulcer diseases and other diseases should be selected soaking seedlings, that is, put the seeds in hot water at 55 °C, while soaking with stirring for 15 minutes, then at 30 Soak it in warm water at °C for 4-5 hours, remove it, and germinate at 30°C. For the prevention and treatment of viral diseases, 10% trisodium phosphate solution may be used to soak seeds for 20 minutes and then rinsed with clean water.

2. Disinfection of seedbed soil After soaking the bed soil before sowing, spray the seedbed with 72.2% Preclo 500-600 times liquid and spray 2-4 kg per square meter. Disinfection of carbendazim with 5-30% carbendazim WP for every 1000 kg of bed soil. When processing, first mix carbendazim as an aqueous solution, then spray on the bed soil and mix well with plastic film. Closely covered, it usually kills a variety of pathogens such as blight in the soil after 2-3 days.

3. Early application of base fertilizer nutrient soil formulated when the fertilizer is sufficient, the entire seedling period can not be fertilized, if you find that the color of the seedling leaves become light, there are symptoms of deficiency, you can spray a little quality assurance of potassium dihydrogen phosphate 500 times liquid.

4. When the temperature is properly controlled, the temperature of the seedbed should not be too high, so that the seedlings grow robustly, and the cold resistance and disease resistance are enhanced. "Two-leaf and one-hearted" period should not avoid seedbed insulation measures can not keep up, if the temperature is kept low, the flower bud differentiation will be hindered, early spring drop and fruit drop serious, affecting the early yield, sunny noon, seedling temperature is easy to high, this time should not be exposed Large ventilation to prevent seedlings from wilting or dying due to excessive temperature changes and excessive water loss.

5. Do not make the seedbed humidity too high and generally do not need watering. When watering is necessary, choose sunny noon and use warm water for watering. Avoid excessive watering to prevent the seedbed from becoming too large, resulting in rotten eyes, frozen seedlings, and diseases. After spraying, in order to prevent the humidity of seedbeds from being too large, weeds can be damped with grass ash or fine dry soil.

6. Do not let the seedlings see light deficiency Seedlings overwintering stage, often encountered Lianyungang weather, when the outside temperature is very low, many vegetable farmers dare not uncover the straw, resulting in seedlings not seen for many days, due to malnutrition affect the formation of cauliflower seedlings And development. To increase the light, keep the cover clean and try to remove the cover as early as possible. On cloudy days, we must also uncover the straw curtains and increase the lighting time as much as possible.

7. Do not ignore the prevention of plant diseases and insect pests. Seedlings susceptible to blight and damping-off. At the early stage of disease, the diseased seedlings are firstly removed and then sprayed and protected in time to prevent the spread.

8. Do not colonize the seedlings 5-7 days before planting. Seedlings should have a hardening seedling process to increase seedling resistance and to adapt to the post-planting environment. Do not avoid direct planting seedlings in order to prevent environmental discomfort after planting, resulting in slow seedling slowing after planting, serious phenomenon of dead seedlings.

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