More open-field vegetables are planted in the south, and the following points need to be noted: First, the ditching of the ditch can lay a good foundation for the healthy growth of the vegetables. Attention should be paid to opening the ditch to deepen the ditch to lower the groundwater level and prevent freezing and stain. Secondly, for different vegetables, sowing time is arranged as follows: In late January, grab the sunny radish and potatoes and cover the mulch, (the potato needs to grow 170 kilograms per acre. The buds should be selected and cut out to ensure that each piece has buds, then copy Grass ash or fly powder after sowing; radish sowing 2 seeds per hole) Spring and summer cabbage, bean, cowpea planted in the greenhouse in the middle and late February. Again, for winter vegetables such as lettuce, radish, and kale, the period of fertilization is as follows: in the early February, topdressing Miao Fei, Mushi 10kg high-quality compound fertilizer and then weeding and weeding. Finally, it should be noted that wintering cabbage, lettuce, broccoli, radish and other crops should be strengthened in anti-freezing measures at low-temperature freezing weather. They can smoke in the top wind or cover straw in the fields. The greenhouse vegetable management situation is as follows: in January, the last year, the greenhouse vegetable greenhouses in late autumn will clean the mulch and debris, and use 25 kg of lime to disinfect the mu; in late January or early February, the fine weather will be planted in tomato, eggplant, and pepper, and planted. Pre-covered black mulch per plant colonization 2 lines spacing 0.4 meters. Acre colonization of about 2500 plants, after planting to take "four membranes covering" method (a layer of plastic film, a layer of small arch, a layer of film, a layer of greenhouse film) insulation, Within a week after planting, temporarily remove the membrane and then ventilate it with a small amount of air. Deeply excavate the trenches between the sheds. Shed melon crop management methods: You can use electric heating wire or soil stove to raise the temperature of watermelon, melon, cucumber, pumpkin and other melon crops from late January to mid-February: first soak seeds with 1500 times potassium permanganate solution 15 Minutes, then rinse with clean water, soak for 5 hours with fresh water, then wrap it in a wet towel and put it into the germination box. When germinated buds grow at 0.5 cm at 28-32 degrees Celsius, they are directly into the nutrition bowl.
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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.
Vegetable cultivation in January or February is the “fragile†period
Every year is a crucial period for the cultivation of vegetables. Due to the low temperature, the “resistance†of vegetables is weak, and field management has become a major problem for vegetable growers. Here, experts from the agricultural network developed the vegetable planting and management schedules for January and February from both open field vegetables and greenhouse vegetables.