First, the greenhouse construction and production regulations Greenhouse selection of ordinary winter-warfare vegetable greenhouses converted from the species for the three-year-old Zaomei Li and Moltny Li, plant spacing of 1.82.5 meters, east-west direction. After adopting a multi-dominant natural happy shape and a modified trunk shape for proper pruning, the shed was warmed on January 12th. The buds of plum trees began to sprout on January 30, began to flower on February 13, and entered full bloom on February 17. Bees and artificial pollination should be carried out in the shed during this period. The flower will be on February 27 and the fruit will mature on April 26.
Second, after indoor temperature and humidity control greenhouses are covered, different growth periods require different temperatures. During the flowering period, the ground covers the film, the night temperature is not lower than 0°C, the temperature does not exceed 20°C, and the flower buds begin to sprout after 18-20 days of incubation. The optimum temperature for flowering of fruit trees is 18-22°C, and it is generally maintained at 7-8°C during the night. But at this time, it is a period when the outside temperature is the lowest, so nighttime insulation is the key. During the period of fruit enlargement, the temperature requirement is relatively high, and it can be maintained at about 25°C, and it can be increased to 28°C in the later period, and 10-15°C is appropriate for the night temperature. During fruit ripening, the temperature difference between day and night is usually large. It should be at 25-28°C during the day and cannot exceed 30°C. It should be maintained at 13°C during the night. Pay attention to ventilation here, otherwise it may cause high temperature damage. After covering, the temperature in the shed will rise significantly, the relative humidity will reach 80%, and the humidity in the shed can be controlled through mulching. In addition to irrigating the fruit during the fruit expansion period in the shed, it is generally not watered in other periods. If the humidity is too high, it can be combined with air dehumidification.
Third, fertilizer and water and fruit management in the buckle before the shed to apply base fertilizer, apply 3000-6000 kg of organic fertilizer per acre, phosphate fertilizer 5 kg, 50 kg of potassium sulfate compound fertilizer. After the flowering and young fruit expansion, 2 top dressings are to be applied. The special fertilizer for fruit trees is 1-1.5 kg. From the first week after flowering, spraying 0.3% urea + 0.3% potassium dihydrogen phosphate once every 2 weeks, and spraying 3-4 times. The self-cultivation rate of plums is low, and greenhouses lack opportunities for pollination under open cultivation conditions. Therefore, measures such as putting bees in sheds, spraying 2010-6 gibberellin at flowering stage, artificial pollination and other measures should be taken to improve the fruit setting rate.
4. The pest control greenhouses are isolated from the outside world and the pests and diseases are relatively light. However, due to the humidity in the shed, it is relatively stable, and it is easy to induce gray mold. The prevention and control measures are: timely ventilation and dehumidification, removal of diseased leaves and diseased fruit, and simultaneous use of 35% metalaxyl 2000-3000 times solution or 50% carbendazim 1000 times solution, spraying once every 15-20 days, continuous 2 times, you can effectively control gray mold.
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There is no doubt that solar monitoring has brought great convenience to people. It saves a lot of manpower and material resources without having to stick to the post for 24 hours as before. Not to mention that the current surveillance cameras have the function of motion detection. As long as someone enters a certain range, it will automatically alarm and capture the scene. What is the function of the solar monitoring system?
1. Solar panel: The solar panel is an important part of the mobile phone software of the solar power generation system, and also a part of the practical value of the mobile phone software of the solar power generation system. Its function is to convert the professional ability of radioactive substances in natural light into electric energy, or send them to storage batteries, or promote load work.
2. Solar controller: The solar controller is used to control the operation of mobile phone software in all systems, and has the functions of overcharge protection and overcharge maintenance for the battery. In areas with large temperature difference, the qualified controller shall also have the function of temperature compensation. In the mobile phone software of the solar road lamp system, there must be light control switch and time control solar road lamp operation.
3. Battery: generally valve controlled maintenance free lead-acid battery. In the mobile phone software of small and medium-sized systems, in cold weather areas, a solar gel battery needs to be configured, which can be used at low temperatures, with high efficiency and is not vulnerable to major damage. Its function is to store the electric energy of the solar panel when the sun shines, and then release it under certain conditions.
4. Variable frequency power supply: split wave type and sine wave type. In order to provide power for 220VAC electrical products, it is necessary to convert the DC stabilized voltage power supply in the solar power generation system software into AC circuit energy, so DC AC variable frequency power supply is required.
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