First, choose the plot
Vegetable seedling beds should choose plots with high dryness, convenient drainage and irrigation, fertile soil and good permeability. It is best to avoid growing crops of the same kind of vegetables in the continuous cropping or sorghum cultivation, so as to avoid soil-borne diseases and avoid underground pests. Serious plot seedlings have occurred. The fully decomposed farmyard manure should be applied as the base fertilizer, according to the cultivar, the appropriate amount of compound fertilizer and a small amount of micro-fertilizer, and shallow tillage.
Second, prevent high temperatures
For vegetable seeds that are difficult to germinate, such as lettuce and celery, the seeds should be treated before sowing. Soak the seeds for 8 hours, wrap them in wet gauze, place them in deep water wells or cold places to germination, or low temperature treatment. Celery is treated at 2~5°C for 48 hours, lettuce is treated at 5°C for 72 hours, which can promote germination and improve. Germination rate. You can also sprinkle some crushed wheat straw on the seedbed or cover the seedbed with a shade net.
Third, prevent viral diseases
Vegetable virus disease occurs severely under high temperature conditions. In addition to the above-mentioned nursery facilities, eggplant and tomato seeds can be treated with 10% trisodium phosphate solution for 10 minutes, then rinsed with water. Attenuated vaccines can also be used to inoculate tomatoes, select antiviral species, use nylon mesh to prevent mites, use silver-gray membranes to avoid sputum, and timely prevent sputum to prevent viral diseases.
Fourth, prevent heavy rain
It is advisable to choose sandy loam for seedlings in flood-prone areas. The surrounding areas of the seedbed should be drained smoothly. Temporary coverings such as old shed membranes should be used to cover the heavy rain. If there is heavy rain after sowing, it should be ploughed once after the rain to prevent the salting of the noodles and affect the emergence of seedlings.
Fifth, prevent drought
Pour the bottom of the water first, then plant the ground, simmer, and crush after the soil is planted. For vegetable seeds with weak germination such as alfalfa, lettuce, celery, etc., cover the weeds such as weeds, corn leaves, newspapers, etc. (to remove them promptly after emergence), and when the seedbed is dry, use a sprayer in the morning or at night. Spray water on the seedbed to increase the moisture content of the kneading surface, which is good for seed sprouting.
Sixth, prevention
In summer, it is easy to cause seedlings to grow, and spray plant planting agents can be used to control the growth. Timely seedlings or seedlings can be sprayed on cucumbers and tomatoes to control the growth of seedlings. Tomatoes are sprayed with 40% to 50% chlormequat 1000 times in the 5th and 7th leaf stages to make the seedlings thick and leafy. The color is dark green and the leaves are thickened to promote flower bud differentiation and increase yield.
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