After the snowfall, the northwest wind began to become a regular visitor. Although snow began to snow, the amount of snow was small, so it was called light snow. At this time, the temperature dropped and gradually fell below 0°C. The number of hours of sunshine gradually decreased. Cloudy days and sunshine were weak. The earth lost its vitality and turned into harsh winter. The agricultural activities in vegetable fields are mainly carried out in greenhouses and are the key period for the management of autumn and winter leeks and wintering buckwheat vegetables. In the early spring of greenhouses, the eggplant, pepper and other crops will be nursed soon. It is necessary to prepare seeds and materials for nursery in advance; Winter vegetable storage work. Autumn vegetables entering the storage and extending the supply period Vegetables eaten in winter, such as Chinese cabbage, radish, and carrots, which are planted in the open field in the autumn, are mostly stored by using a method of storage to extend the supply period. There are two methods for storing and stacking trenches for live pit storage. Cabbage can be stored in live pits and can be buried and stored. When using the burial method, try to harvest on a sunny day and pick it up. Instead of using a knife to chop the dish, it can be placed in a buried trench that has been dug in advance. The groove width is 1.2 meters and the depth is 10 centimeters above the vertical height of cabbage. about. Later, according to changes in the outside temperature to increase the thickness of the cover soil. Storage pits should be dug for storage in advance for about 10 days, and permanent or semi-underground storage pits can also be built. In the evening, it is better to enter the cellar. After the dishes are well-repaired, they will be stacked horizontally and horizontally, generally about 10 layers. In the early period of entering the cellar, the vegetables are dropped once every 3-4 days, and they should be poured three times. After that, the vegetables are dropped once every 15 days. Do a good job in adjusting the temperature and ventilation management. The temperature in the pit should be 1°C-2°C for storage. Radishes and carrots are stored by digging and burying methods. The pits are excavated in advance. The pits are suitable in the east-west direction. The width is 1.2-1.5 meters and the depth is 1-1.5 meters. The length is determined according to the storage volume. In the middle and late November, the radish head was placed one by one in the upward direction, and the carrots were placed side by side. Each layer of radish was covered with 5 cm thick moist soil. The soil moisture in the cellar must be suitable, generally 12%-15%. If it is too dry, it is easy to have a heart. If it is too wet, it has poor ventilation and is easily rot. The uppermost layer covers the soil layer by layer according to the outside temperature. Finally, the thickness of the cover soil is about 30 centimeters. Then, 2-3 layers of straw curtain or straw are covered on the upper layer, and the suitable temperature for storage is 1° C.-3° C. to prevent freezing. Storage and supply period from November to the end of March the following year. Leafy vegetables such as spinach, celery, and coriander are stored by digging trenches, and digging trenches are drilled 3-5 days ahead of time. The depth is slightly higher than the height when the vegetables are erect and the width is 1.2-1.5 meters. When the outside temperature dropped to 0°C, it was buried in time. Later, according to the gradual decrease in temperature, the thickness of the soil is covered with a layer of straw or old insulation. Gradually increase the storage temperature gradually after the cellar is out, and then sell it after refurbishing after about 2-3 days; if the cellar is immediately put into a place with high temperature, it will cause decay and affect the quality. Solar greenhouses strengthen cold insulation It is necessary to carefully inspect and analyze the thermal insulation performance of the planted solar greenhouses, and take early measures to protect the weak insulation areas against cold and heat insulation. The key is to prepare the front roof, the south foot, the back roof, the back wall, the outside cold protection ditch, the door, and the rear Windows, vents and other parts of the cold insulation. It is also possible to use a multi-layer covering method in the shed to increase the temperature. About 40 centimeters from the roof in the shed, iron wire is used as a bracket, and a non-woven fabric or agricultural film is covered on the bracket, which can effectively prevent heat loss in the shed and reduce cross-flow heat dissipation. To master the principle of laying down at night and opening during the sunny day. Scientific Management Improves Cold Resistance of Plants â—† Grafting Seedling tomatoes, cucumbers, eggplants, summer squash and other crops adopt the method of grafting seedlings on the rootstocks to enhance the cold resistance of the plants and at the same time significantly increase the resistance and disease resistance of the crops. Cucumber adopts “Bei Nong Liang An†and other brown seed squash as the rootstock grafting to remove the wax powder from the melon strip, maintain the cucumber flavor and improve the quality. â—† Take temperature-changing management of cucumbers, tomatoes and other thermophilic crops, adopt temperature management methods after seedlings are planted, that is, adopt one-day low-temperature management, another day high-temperature management methods, use cold and hot alternate environmental changes to improve the cold resistance of plants. Seeding and management of cold-resistant vegetables Solar greenhouses with poor insulation performance are not suitable for planting vegetables such as tomatoes and cucumbers during winter season. It is advisable to plant celery, lettuce, rapeseed, spinach, capsicum, cherry radish, fennel, and oiled wheat in time after the last meal. Such as fast-ripe fast mature leafy vegetables and root vegetables. Sowing or planting in batches is used to harvest and supply the winter and spring markets in succession. Among them, spinach, fennel, cherry radish and other crops are sown directly; crops such as lettuce, rapeseed and capsicum are planted and transplanted. For crops such as celery, radish, kale, and cauliflower that are already in the growth stage, proper management of environmental conditions, cultivating loose soil, top dressing, watering, and pest control must be done. Sunlight greenhouse thermophilic crop fine tube Adjust the appropriate temperature and humidity in time to open and close the tuyere to adjust the temperature and humidity, sunny as much as possible to increase the temperature within the shed, strict grasp of the air release time, tomatoes, cucumbers and other thermophilic crops the most suitable temperature in the morning to 23 °C -30 °C, afternoon 26 °C - 23 °C, 15 °C -20 °C at night is appropriate. Celery, lettuce and other cold-resistant crops, the most suitable temperature for the daytime 18 °C -22 °C, night 10 °C -12 °C; indoor air humidity depending on the crop to adjust tomato, eggplant 45% -60% is appropriate; cucumber, sweet pepper 60%-80% is appropriate. Dry rice hulls, wheat bran, sawdust or other finely divided straws should be prepared in advance. The ground that spreads between the rows of crops in the event of snowfall and even cloudy weather can effectively absorb excessive moisture in the shed, thereby reducing the amount of moisture in the shed. Air humidity plays a role in preventing diseases. Plant adjustment Cucumber, tomato, zucchini, etc. The use of silver-gray slings to fix the plant, it is necessary to hang vines and vines in a timely manner, cucumbers need to be used multiple times to extend the plant nectar, the use of falling vine clips can make plant growth in the shed. The old leaves and diseased leaves of the lateral branches and the lower part are timely destroyed, and the ventilation and light transmission are strengthened. In addition, timely cultivating loose soil, increase ground temperature, increase soil permeability, and promote root growth. Fruit management Tomatoes and eggplants should adopt supplementary pollination measures to promote fruit setting. It is best to use pollinating bumble bees or pollinator to conduct pollination. However, it should ensure that the temperature in the shed reaches 15°C or higher. Otherwise, other methods should be used to promote fruit setting. Use plant growth regulators such as “Feng Yielding Agent No.2†or “Guo Ning Ningâ€, which are safe for vegetable products, to spray flowers or decorate flowers. The concentration should be appropriate. Do not use it repeatedly to avoid the formation of malformed fruit. Remove excess fruit and deformed fruit as soon as possible after fruiting. After the fruit matures, harvest it in time to avoid licking. Scientific watering should be done on a sunny morning, and do not water on a cloudy or snowy day. Using watering methods such as drip irrigation, micro-spraying, or under-membrane irrigation can improve ground temperature and water conservation. In the greenhouse, a storage tank or storage tank is provided to increase the temperature of the irrigation water. When watering, the amount of water should not be too large at all. Use the principles of “water pouring for small water†and “seeing dryness and seeing wetness†for water management to minimize the amount of water. Indoor air humidity. According to the weather, plant growth, watering methods and soil to determine the watering time and watering. Tomatoes and eggplants are usually driped for 4-6 days, watering 3-5 times per mu, and submerged film irrigation is used to water once every 10-12 days, and water per mu is 10-12 squares; cucumber, The sweet peppers were driped for 2 to 5 days, watering 3 to 6 square meters per mu, and submerged irrigation under the membrane watered once every 7 to 10 days. The amount of water per mu was 10 to 15 squares. Rational fertilization According to the characteristics of the crop's fertilizer requirements and plant growth, topdressing can be done to achieve balanced fertilization of NPK and trace elements, with particular emphasis on the application of potash fertilizers, so as to select the best liquid fertilizer for absorption. Every 10-15 days topdressing once, drip irrigation watering, topdressing "Christmas tree" and other water-soluble fertilizer 5-8 kg per acre; under the film dark irrigation water, each topdressing nitrogen, phosphorus and potassium content of more than 40% of the red Fertilize 7-10 kg. The foliar spray fertilizer is applied once every 10 days or so to spray the fertilizer. It can spray 0.3% potassium dihydrogen phosphate and trace elements such as boron, zinc, and copper. It can also spray "Rayleigh 2000". Functional fertilizers such as alginic acid, with special attention to more spray on the back of the leaf. Http:// As a professional supplier of medical apparatuses and instruments, Suzhou Medtion International Trade Co., Ltd. is located in Zhangjiagang City, Jiangsu Province. We are wholly owned subsidiary of Jiangsu Redleaf Medcial Equipment Co., Ltd who is a professional Medical equipment producer for 30 years. 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