With the advent of the cold weather, temperatures have continued to fall, and the coldest days of the year have arrived. This period is not only a critical period for early spring cropping, but also a golden period for greenhouse vegetable management. In this issue, we have selected several types of vegetables to be considered in this area of ​​management, and provide guidance for readers with a view to reference. Early spring cropping During this period, the temperature is low, the light is weak, and the sunshine time is short. Therefore, heating, heat preservation and increasing light are the key to the success of seedlings. The nursery shed should choose a solar greenhouse with good lighting conditions and good thermal insulation effect, and lay the geothermal line before the nursery or take other temporary heating measures. The solanaceous seedlings in the early spring, the tomato, pepper, eggplant and other solanaceous crops cultivated in the greenhouse were planted in December last year, and they have gradually entered the seedling stage. In management, we must first increase the temperature and make it more visible. Even the cloudy day, the fill light is installed, and the light is replenished for about 12 hours every day. At the same time, we must also pay attention to the night temperature can not be too low, generally to ensure that above 13 ° C, otherwise long-term low temperature will affect flower bud differentiation, the formation of deformed fruit, directly affect the quality and yield of the fruit. Cabbage and lettuce in the early spring open mulch covered with cauliflower, cabbage, lettuce, lettuce and other crops in the best seedling period in mid-January, 72-hole or 128-point plastic tray seedlings, use early maturing varieties, planting a day in advance, pouring feet Evenly sown after the bottom. It is worth noting that the night temperature of cabbage seedlings should not be lower than 13 °C, so as to avoid premature convulsions through the vernalization stage. Harvesting and pulling of warm crops in autumn and winter In the solar greenhouse, tomatoes, peppers, zucchini, eggplant and other crops have entered the late growth stage. According to the plant growth and the greenhouse temperature, it is decided whether to pull or not. If the indoor minimum temperature can be above 13 °C, the plant grows vigorously and tries to delay. seedling. If you do not meet the above conditions, you should pull it at the right time, and pay close attention to the land preparation, and prepare to plant early-ripening vegetables such as rapeseed and lettuce with good cold tolerance. Key period of overwintering vegetables management At present, it is the key period for the management of overwintering vegetables. It is necessary to pay attention to the weather changes to prevent damage to crops caused by strong cold and continuous weather. If necessary, take temporary heating measures such as Yuba, heating combustion block or electric blast furnace; scrub the shed film to enhance the light transmittance; timely pruning and raking, assist pollination, and remove excess flower buds and fruits; Scientific watering and topdressing, topdressing should be applied with drip irrigation with comprehensive nutrient and reasonable ratio of instant fertilizer. It can also apply NPK or humic acid organic liquid fertilizer with water; set up water storage in greenhouse Pool or water storage tank or barrel, wait for the water temperature to rise and then water, but also pay attention to the small water and water pouring is appropriate, the vegetables in the greenhouse should avoid flooding, to prevent the ground temperature from dripping and affect the root growth and water absorption. ,nutrient. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone
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Melons and greenhouses, eggplants, early spring, greenhouse cucumbers, spring greenhouses, multi-layered planting of tomato, eggplant, pepper and other warm crops began to raise seedlings. Tomatoes and eggplants were seeded with 50-hole or 72-hole trays; cucumbers were seeded with 32-hole or 50-point plugs. The prepared seedling substrate can also be used. The 2:1 ratio of peat nutrient soil and vermiculite can be used as the substrate. 10 kg of ternary fertilizer is added per cubic meter, and seeds are soaked and germinated and treated with chemicals. The seeds are evenly distributed and the thickness of the covering soil is uniform. 