At present, it is the peak season for greenhouse vegetable production. How to ensure the safety of vegetables over the low temperature period and meet the normal supply of the vegetable market is a matter of great concern to the farmers. To this end, recently, the reporter interviewed a professor of the College of Horticultural Forestry of Huazhong Agricultural University and a vegetable expert.
Q: At present, what should I pay attention to in the management of vegetable gardens?
A: In the winter and spring seasons, the temperature is low, and the vegetable insulation in the greenhouse is the key.
Recommendation 1: Use plastic film multi-layer cover to keep warm. That is to say, the shed is covered in the shed, or the shed is placed on the shed, and the double-layer film or the three-layer film is used for covering. Before the rain and snow weather of the open vegetables, the surface should be covered with a film for temporary insulation.
Recommendation 2: Pay attention to the way and time of film coverage. If it is sunny, the cover in the plastic greenhouse or the middle shed should be removed during the day to allow the vegetable crop to receive more sunlight, and the film should be covered after 4 pm. Cover the film inside the shed should be tightly covered, leaving no gaps. In the case of rain and snow, you can not uncover the film in the shed or shed in the shed. For the purpose of insulation, the north end of the shed should be sealed (if necessary, covered with straw curtains, etc.), the entrance at the south end of the shed, the operator enters from the south end of the shed to avoid the adverse effects of the north wind.
Recommendation 3: Strengthen the management of indoor nursery. January-February is the key period for spring seedling vegetable seedlings. When the temperature is low, multi-layer cover insulation can be adopted to avoid seedlings from freezing, proper control of seedling growth, avoidance of length, low temperature, and high incidence of gray mold when the humidity in the shed is high. And squatting, etc., should choose appropriate chemical control.
Recommendation 4: Set up a shed in advance to prepare for early spring vegetable greenhouse cultivation. After the end of January, the vegetables in the early spring will be planted one after another. Generally, the greenhouse should be built more than 20 days before the planting, covering the film seal, increasing the temperature and low temperature in the shed, and preparing for colonization.
Q: For the listed vegetables, what else do you want to remind the growers?
A: The listed vegetables should be properly arranged according to the characteristics of different vegetables and the needs of consumers. During the holiday period, some consumers like to buy mud-dried vegetables to be stored, such as lotus root, radish, carrot and other root-root vegetables. After harvest, the farmers can simply go to market. Vegetables such as red cabbage and cabbage are not washed after harvesting, and can be marketed after simple bundling. Fresh leafy vegetables are marketed after washing.
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