With the arrival of the cold weather, temperatures have continued to drop, and the coldest days of the year have arrived. This period is not only the critical period for the early spring crop breeding, but also the golden period for wintering vegetable management in greenhouses. The contents of this issue have listed several aspects of vegetable management that should be taken into consideration in this issue, and provide guidance for readers for reference.
Early spring crops
During this period, the temperature is low, the light is weak, and the duration of sunshine is short. Therefore, raising the temperature, keeping warm, and increasing the light are the key to the success of breeding. Nursery sheds should be equipped with solar greenhouses with good daylighting conditions and good insulation effect. Before the nursery is raised, the ground heating line or other temporary heating measures should be provided.
Seedlings of Solanaceae Seedlings of tomato, pepper, and eggplant grown in the greenhouse in early spring were raised in December last year, and they have gradually entered the seedling stage. The management must first increase the temperature and make it more visible. Even if it is cloudy, it is installed with a fill light, and it fills light for about 12 hours per 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 malformed fruit, a direct impact on the quality of fruit and yield later.
Melons and greenhouses Solanaceae Early spring crops Greenhouse cucumbers and spring greenhouses Multi-layered coverage of tomato, eggplant, pepper and other thermophilic crops began to grow seedlings. Tomatoes and eggplants were planted with plugs of 50 or 72 points; cucumbers were cultivated with plugs of 32 or 50 points. The prepared nursery substrate can also be used as a substrate with 2:1 ratio of peat nutritious soil and vermiculite, 10 kg of triple fertilizer per cubic meter, and soaked seed germination and chemical treatment seeds, selected sunny sowing, Seed sowing uniform thickness of the cover soil.
The optimum breeding period for cabbage, lettuce, lettuce, cabbage, lettuce, lettuce and other crops cultivated in early spring exposed cabbage and lettuce is in mid-January. Plastic trays with 72 or 128 holes are used to grow seedlings. Early maturing varieties are used to sow the seeds one day in advance. After sowing, even sowing. It is worth noting that the night temperature of cabbage seedlings should not be lower than 13 °C in order to avoid premature twitching through the vernalization stage.
Winter and autumn warm-weather crops harvesting and pulling
In autumn and winter in solar greenhouses, tomatoes, peppers, zucchini, eggplants and other crops have entered the late stage of growth. According to the growth of the plants and the temperature of the greenhouse, it is determined whether or not to pull the earthworms. If the minimum temperature at night indoors is above 13°C, plant growth is as robust as possible. seedling. If you do not meet the above conditions should be timely pull, and pay close attention to land preparation, ready to plant good cold rape, lettuce and other early-maturing vegetables.
Overwintering vegetables management critical period
At present, it is a critical period for the management of overwintering wolfberry vegetables. Attention should be paid to changes in the weather in order to prevent the cold and lye weather from harming crops. If necessary, take temporary heating measures such as Yuba, warming combustion block or electric blast furnace, etc.; Always clean the shed film to increase the light transmittance; In time, pruning and falling vine tips, assist pollination, and remove redundant buds and fruits; Scientific watering and topdressing, topdressing should be applied with drip irrigation, comprehensive nutrition, reasonable ratio of soluble fertilizer is appropriate, can also be applied with water, nitrogen, phosphorus and potassium full alginate or humic acid organic liquid fertilizer; set in the greenhouse water storage Pool or storage tank or bucket, until the water temperature rise and then water, but also pay attention to the ground water is appropriate for the small, greenhouse vegetables to avoid flood irrigation, to prevent the sudden drop in ground temperature and affect root growth and absorption of water ,nutrient.
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