In recent years, some rural households in the town have used the technology of live-broadcasting in greenhouses and mulching films to cultivate early-maturing soybeans. The annual yield of soybeans is about 500 kilograms per mu, which is not only listed 20 days earlier than the open cultivation, but also increased by about 1,000 yuan per mu. Better economic efficiency. Now introduce its high-yield cultivation techniques as follows: First, the soil fertigation. Soybeans are warm and warm, and they are short-day plants. It is appropriate to use soils with deep soils, calcium-rich organic matter, and neutral, well-drained soil. If the greenhouse is sown early, the soil moisture should not be too large. In general, about 1,000 kg of chicken manure is cooked in Muji and 15 kg of compound fertilizer is imported in Sanyuan, which is applied one month before sowing. Practice has proved that re-application of base fertilizer can improve the cold resistance and yield of soybeans. After fertilization, it should be made into flat rakes, with a width of 2.1 meters, a width of 0.3 meters, and a depth of 0.2 meters. Second, timely sowing 1, species selection. The early-maturing soybean varieties include Teza No. 4, special early-maturing soybeans, and Hefeng 35. However, the special early morning No. 4 is the best. 2, sowing. From the end of January to the beginning of February, it is advisable to choose the weather without strong cold air. The amount of mu for 5-6 kg. Sowing by on-demand method, plant spacing 25 cm 25 cm, sowing depth 3-5 cm, the same depth requirements in order to facilitate the emergence of neat and tidy. General greenhouse temperature 10-25 °C (external temperature 8-15 °C), about 10 days Qimiao. 3, chemical weeding. After sowing the cover soil, use 5% acetochlor EC 80-100 ml per mu and spray 30-40 kg of water evenly on the surface to weed. Third, greenhouse management 1, temperature management. In the early stage, it is mainly antifreeze and warmth, and the ventilation and ventilation are strengthened later. It is required to buckle up the greenhouse 1 week before the live broadcast. Immediately after sowing, the plastic film or stamped arch membrane shall be covered. After the emergence, attention should be paid to selecting sunny days and breaking the membrane to release seedlings. The suitable temperature in the shed before emergence is 15-25°C; the suitable temperature in the growth period is 20-25°C; the suitable temperature in the flowering period is 20-28°C. Therefore, it should be based on the growth characteristics of each period in time to keep warm or ventilation ventilation. 2, fertilizer and water management. General seedlings should not be fertilized, such as leaf wrinkled leaves affected by low temperature, Mu can use 50 grams of yellow enemy fertilizer on the water 30-45 kg, sprayed on a sunny day at noon. During flowering stage, 0.5% potassium dihydrogen phosphate aqueous solution was used for foliar dressing. Spray time is before 10 o'clock in the morning or after 4 o'clock in the afternoon. It is better to use cloudy days. Every 7-10 days before spraying again, spray should be sprayed once after spraying. In addition, 10 kg of urea is applied to the water during the season of falling flowers. In terms of water management, the seedlings should not be watered before they are unearthed; the excessive drought at the seedling stage can be watered in an appropriate amount to promote rooting. Dry flower moisture management should adopt the principle of "dried flowers wet." 3, pest control. Shed soybeans due to low temperature and humidity during seedling period, combined with the application of unripe farmyard fertilizers, can easily cause standing dead seedlings. Therefore, 200 grams of chlorothalonil smoke agent per acre can be used for chemical control during the seedling stage, with as little water-based drug as possible. When soybeans are in 4 leaves, they can be sprayed with chlorothalonil and carbendazim. Spray once every other week for a total of 2 sprays. 4, timely harvest. Generally, soybeans in greenhouses enter the harvesting period in late April and early May. Early-maturing soybeans are expensive in the word “earlyâ€, so picking soybean meal in batches at the appropriate time and the morning market should be used to obtain better results.
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