Precautions for harvesting and management of agricultural vegetables in frost
frost fall is the last solar term in autumn. At this time, the weather is getting colder and autumn frost appears. In terms of agricultural production management, we should pay special attention to the cold prevention and heat preservation of vegetable crops, and harvest open field vegetables in time. Then let the old yellow calendar introduce you the precautions for frost vegetable harvesting management. Management and harvesting of
Chinese cabbage sown in autumn is about to be harvested at the later stage of heart wrapping. Due to the low temperature from September to October this year, the heart wrapping is slow. It is necessary to strengthen the later watering management to keep the soil moist. Generally, the water shall be watered every 5-7 days. The water volume shall be uniform to prevent flood irrigation. The irrigation shall be stopped 7-10 days before harvest. Cut vegetables in time before the temperature drops to 0 ℃ to prevent freezing. Generally, in plain areas, from November 3 to 7, Yanqing, Huairou and other northern mountainous areas should be cut 5-6 days in advance according to climate change.and
autumn greenhouse vegetable management: tomato, cucumber, eggplant, pepper and other thermophilic crops should strengthen heat preservation and cold prevention, close the air outlet at night and surround it with a straw curtain; And timely watering and timely harvesting. For tomato fruits that cannot turn color, they shall be harvested in time when the temperature drops to more than 5 ℃ and placed in a greenhouse or idle house with high temperature for post ripening. The management of watering and insect prevention should be strengthened for cold resistant vegetables such as celery, lettuce, rape and radish.
autumn and winter solar greenhouse vegetable planting and management. Cucumber, zucchini and other melon crops with overwintering stubble are in the appropriate period for planting. Fertilization and land preparation should be done 10 days in advance. Planting in sunny days should be selected to achieve appropriate shallow planting, appropriate density and sufficient planting water in time. Tomato, eggplant, pepper and other crops in autumn and winter are in the flowering and fruiting period. It is necessary to strengthen the management of tillage and loosening soil, winding and binding vines, pruning, auxiliary pollination, thinning flowers and fruits, watering and topdressing, so as to promote more fruits with high commodity rate.
overwintering stubble vegetable management spinach, shallot and other overwintering stubble vegetables are in the seedling stage. Watering and topdressing should be carried out in time to promote plant growth and health, which is conducive to safe overwintering.
radish and green onion are harvested in frost season. Most areas in the north have finished the autumn harvest. Even the cold resistant crop green onion can no longer grow, because "frost can't afford green onion, the longer it grows, the more empty it becomes"; Radish and carrot also basically stop growing, so they should be harvested in time to prevent freezing injury from affecting their marketability; Scallions can't be sold for a while. Store them in a place away from light and low temperature; After unscrewing the tassel, cover the rhizome with the tassel, dig the cellar at an appropriate place, and store it in the cellar when the external temperature drops below 0 ℃.and
clean the countryside and plough the land. After harvesting the open field thermophilic vegetables, such as tomatoes, cucumbers, peppers, eggplants, potatoes and other crops, collect the plants and stubbles in the field as soon as possible, and focus on harmless treatment such as high-temperature composting or ozone disinfection. Plough the land before freezing. Overwintering root vegetables or rape can be planted on the land at the upper air outlet of the city to prevent the bare land from forming dust and avoid pollution to the urban air.https://www.dailyq-a.com/Culture/27266.html
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