In the summer, due to high outside temperature and difficulty in germination, you can adjust to local conditions and find some cool places. Such as: basements, cellars, caves, electric wells, under the shade, under the cucumber racks, etc., can also be suspended from the water in the wells to 20 cm above the surface for germination. The seeds are germinated under suitable environmental conditions (15-20°C is the most suitable temperature) and after about 10 days, the seeds can be exposed.
There is also a germination method is to soak seeds, rinse the seeds, remove and dry, wrapped with wet cotton cloth or gauze, buried in wet soil germination. Seeds should be buried in a cool, moist place. Such as after the house, cucumber stand and so on. Do not bury it too deeply when it is buried. Normally, the seed covers 3-4 cm. Sprinkle fresh water every day in the area where the seeds are buried. Remove the seeds every two days and flush them with clean water until the seeds germinate.
Choose the right seedbed to prevent continuous cropping or soil-concentrated celery seeds being small. The storage of nutrients is limited, and the root system is young after emergence. It is sensitive to soil moisture and temperature. It is prone to "hanging" or "growth" in drought and high temperature environments. The symptoms of the seedlings. Therefore, we must choose soil loose, fertile, rich in soil organic matter content, permeability and good water retention, convenient drainage, irrigation, cool and cool plots to build a seedbed. Avoid breeding seedlings in continuous plots to avoid causing soil-borne pest damage. Soil compaction is often caused by two reasons: First, bed soil is not good; the other is the lack of bottom water, humus content is small, the structure is not loose, it is prone to compaction, resulting in the phenomenon of rooting dead seedlings.
Choose high-quality seeds to improve the quality of sowing Celery likes cold, cold and heat, poor drought tolerance, dry seed sowing in summer or under high light irradiation slow seeding; seed sowing uneven, environmental conditions or cover thickness varies , resulting in uneven seedlings; wolfberry grains and Chen seeds generally weak vitality, germination is slow, germination is difficult.
The excessive application of nitrogen fertilizer by scientific fertilization will cause leggy seedlings, slender stems, thin pale leaves, soft tissue, and less root system. When the temperature is too high, especially when the night temperature is too high, weak seedlings and dead seedlings are easy to appear.
Sun protection against rain The high temperature, strong light and heavy rain in the summer are not conducive to the emergence of celery, so it is necessary to protect the seedlings from sun and rain. After sowing, the height of the scaffolding at the top of the gong is 1 meter. The mulch is covered with straw, straw or shade to cover the shade and moisturize. Immediately after the emergence of the seedlings, remove the cover from the surface. If covering wheat straw or straw curtains, the seedbed should be watered first, and conditions should continue to be shaded. Seed beds should always be moist, but they should not be flooded. Weather protection can also be covered with old plastic paper. It is rolled up about 40 centimeters from the ground to facilitate ventilation and smearing with mud. If it is washed out by rain, it should be reapplied. Wait until the seedlings 2-3 pieces of true leaves are withdrawn, and water should be poured immediately after the withdrawal.
Strengthen the seedling management, pay attention to the prevention and control of underground pests to control earthworms and other underground pests, the bran can be fried in the pot, add 90% trichlorfon powder and mix into a bait, sprinkled around the seedbed.
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