Management method of cucumber

There are two solar terms in February: "heavy snow" and "winter solstice". The weather begins to turn from cold to freezing, the temperature drops obviously, cold air invades frequently, and there may be heavy snow, cold wave and freezing. Experts suggest that the focus of farming this month is to keep warm and prevent freezing damage. The main farming arrangements are as follows: first, spring sowing fruits and vegetables to raise seedlings; The second is field management, focusing on the safe overwintering of crops; The third is to use the slack season and accumulate fertilizer in winter to clean the countryside. Seedling raising and management of greenhouse vegetables 1, seedling raising of melon vegetables in greenhouse in spring and summer. One is hotbed seedling raising. The second is to use nutrient clods, plastic nutrient bowls or plastic plug seedlings to improve the rate of strong seedlings. Third, disinfect and soak seeds before sowing to accelerate germination, thus improving the quality of sowing and emergence. Fourth, do a good job in seedling management, focusing on uncovering the shed film and the small arch shed cover in time to prevent seedlings from growing in vain and freezing injury. Watermelon and melon advocate grafting seedling. 2. Planting and management of spring eggplant fruit vegetables in greenhouse. Set up the greenhouse first, and tie the greenhouse film 10- 15 days before planting. The greenhouse should run north and south, which is beneficial to increase the light and raise the greenhouse temperature. Second, fine soil preparation, deep furrow and high border cultivation, and drainage ditch digging around the shed to reduce the groundwater level. Film mulching irrigation and fertilization in border ditch adopts drip irrigation technology under film. Third, apply base fertilizer. If the soil is acidic, apply lime 100- 150kg per mu to adjust the soil pH value. Fourth, root water should be poured in time after planting, and then plastic film should be covered to build a small arch shed, which should be closed for about a week to promote early and slow seedlings. Fifth, after delayed emergence, we should control the temperature and humidity in the shed according to the weather changes and plant growth. Proper ventilation during the day, reduce humidity and discharge harmful gases. When the temperature is too low at night, it is necessary to cover the small arch shed with straw curtains, sunshade nets and non-woven fabrics to keep warm. 3. Cultivation and management of vegetables in greenhouse in winter and spring. First, multi-layer covering and heat preservation are adopted to meet the higher temperature conditions required in the flowering and fruiting period. Second, pay attention to the ventilation in the greenhouse, discharge harmful gases such as ammonia and sulfur dioxide, increase the concentration of carbon dioxide in the greenhouse, and reduce the humidity in the greenhouse. Ventilation should be carried out at noon on sunny days, and the tuyere should be opened in a sheltered and sun-proof place. Thirdly, plant growth regulators such as anti-falling hormone are applied to protect flowers and fruits, improve fruit setting rate and reduce abnormal fruits. Fourth, topdressing and watering in time during the fruit expansion period or after harvest. Fertilization is mainly based on organic fertilizer, supplemented by chemical fertilizer, and ammonium bicarbonate is prohibited; At noon on sunny days, topdressing and watering should be carried out, and drip irrigation technology under plastic film should be popularized. Fifth, agricultural control and pesticide control should be combined to control pests and diseases. In order to reduce pesticide residues, emulsions should be reduced as much as possible, and fumigants and powders should be used to prevent diseases. If there is heavy snow this month, the following management measures should be taken in production: 1, harvest in time and grab some open vegetables to avoid freezing injury and snow pressure. 2. Cover with straw to keep warm and prevent freezing. Pay close attention to covering and heat preservation of greenhouse vegetables to prevent freezing injury. Greenhouse vegetables should be covered with straw curtains, non-woven fabrics, sun-shading nets or multi-layer coverage, and measures such as heating with electric heating wires and burning cigarettes can be taken; Vegetables in the open field can be covered with straw and sunshade net to reduce the occurrence of freezing injury. 3. Sweep the snow in time to reduce freezing injury. Multi-span greenhouses can take measures such as sweeping snow, shoveling snow and heating to melt snow in the shed. Strengthen the greenhouse facilities, assign special personnel to protect the vegetable greenhouse, and clear the snow on the greenhouse in time at night to prevent the greenhouse from collapsing. If the snow is too heavy, it is necessary to clear the plastic film in the shed in time, and use the relatively high temperature of the soil to raise the temperature in the shed to melt the snow. 4. Strictly control water and prevent diseases. Try not to water the greenhouse as little as possible to reduce the air humidity in the greenhouse. 5. After the snow suddenly clears up, the greenhouse should pay attention to returning to the curtain in time to prevent withering. If the leaves are normal, gradually increase the number of grass curtains until they are completely uncovered; If there is wilting, it is necessary to cover several layers of grass curtains in time to adapt the crops. If possible, carbon dioxide gas fertilizer can be added in the greenhouse, and attention should be paid to heat preservation and cold prevention, and an arch shed should be added in the double-layer greenhouse to prevent freezing injury.