Key points of planting technology of summer celery
Xia Qin is listed in the first half of August to the beginning of October. It is the main green vegetable with mild autumn and good benefits. Because it is planted in early May to late June, it is difficult to grow and cultivate during the hot rainstorm season. Overcoming high temperature obstacles and creating a good environment for plant growth is the key to obtaining high-yield, high-quality and high-efficiency technology of summer celery.
(1) Seeding and high temperature cultivation have higher requirements for varieties, and more varieties are selected for heat and heat resistance, such as summer celery, glass crispy celery, and American polis celery. Before sowing, use low temperature germination, soak the Seeds with water for 12 to 24 hours, remove them with water, rinse off the epidermis, dry the surface of the seeds, wrap them in a refrigerator and store them in a freezer at 5 °C. After an hour, germination in the room, keep moist, when the seeds 50% sprouted white after sowing.
Usually live, can also be transplanted. The sowing bed uses a shed and a layer of shade net to prevent heavy rain. After sowing, the bed surface is covered with a wet straw curtain or a sunshade net. After the emergence, the cover is removed, the small water is poured and moisturized, and the water is drained in time. The seedling age is controlled in about 40 days.
(2) Shading and celery cultivation in the summer must be shaded. Generally, it can be directly planted in the greenhouse and shade net, and the old film is used as the sky film covering. The film is covered until the seedlings are released, and the sunshade net is covered early. Live broadcast, or after sowing, covered with stalks, straw, straw, etc., or mixed with white cabbage, rapeseed, etc., or intercropped with high-stalk crops.
(3) The management is generally carried out with high-density cultivation, planting 50,000 to 60,000 plants per acre, with a row spacing of 8 to 12 cm square. The planting should be shallow, and the method of live broadcasting in the field can also be used.
After sowing, use 40% of herbicide ether 0.5 kg per acre, 80-100 kg of water, and evenly spray the weeds.
The seedling grows 5 to 6 pieces of true leaves and grows faster. When watering, it is cool and cool, avoiding the high temperature during the afternoon. Topdressing should master the principle of a small number of times, and it is advisable to choose nitrogen fertilizer. After the plants grow up, the top dressing can be combined with watering.
(4) Long-term spraying of 2 to 3 times of instant boron fertilizer or calcium perphosphate leaching solution can prevent cracking and rotten heart of petiole and prevent yellowing of petioles at the later stage. Spraying 5 mg/kg gibberellin solution once every 10-15 days before harvesting can effectively increase yield and improve quality.
(5) The harvesting and harvesting is timely harvested according to the growth status of celery and market demand. Because the summer season of summer celery grows hot and hot, it is not conducive to growth. Therefore, the harvest of summer celery is generally earlier than that of autumn celery, and it is generally semi-agricultural.
(6) Insects and insects are worms, sprayed with dimethoate or anti-polygon. Leaf spot and spot blight, control with chlorothalonil or anti-chlorpyrifos. Viral disease, prevention and treatment with plant disease, anti-toxic agent No. 1, virus A and so on. Soft rot, controlled with agricultural streptomycin sulfate or neomycin.
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