Temperature and humidity control In winter, in order to reduce heat loss and increase temperature and soil temperature, the shed film should be as tight as possible. Generally consider the temperature as the main factor, and be flexible according to the outside weather conditions.
If the air humidity in the greenhouse is lower than 50%, it will directly affect the photosynthesis of peppers and the absorption of mineral nutrients. When the air humidity in the shed exceeds 70%, it will cause capsicum growth, and it will be conducive to the germination and infestation of various spores. , causing the epidemic to occur. Therefore, ventilation should be carried out to promote exchange of high-humidity air inside the shed with low-humidity air outside.
Reasonable dense planting in front of the turf after the harvest in time, per acre 2-3 tons of fertilizer farm fertilizer, a pack of compound fertilizer, a pack of calcium as a base fertilizer. The reasonable planting density of pepper is 50-60 centimeters, 30-40 centimeters of plant spacing, single planting, and about 3,000 plants per acre.
Field management
1. Temperature: Within one week after planting, it is not ventilated, mainly based on heat preservation. The growth temperature of pepper (prickly-bell pepper and crunchy shell) is 20°C-25°C; the night temperature can not be lower than 10°C, the temperature rises, and the seedling period is uncovered. Membrane ventilation and ventilation time is 9-10 points. After 15-16 pm, the cover film should be closed.
2. Moisture: Pepper is more tolerant to drought and drought. To achieve high yields, water management must be strengthened. In the event of flowering, in case of drought, it should be timely irrigation to keep the soil moist.
3, top dressing: (1) light Miaofei: After planting survival, per acre with manure urine 1000 kg, or urea 5-6 kg, combined with cultivator irrigation. (2) Steady application of flower bud fertilizer, appropriate application of phosphorus, potassium fertilizer, promote multi-branching results, apply 15-20 kg of urea per mu, 10 kg of calcium sulfate plus 10 kg of potassium sulfate. (3) Re-apply flower and fruit fertilizer: N, P, and K fertilizers are used in combination with 2000 kg of excrement per acre, 15-20 kg of general calcium, 15 kg of potassium sulfate, 20-25 kg of cake fertilizer or 30 kg of compound fertilizer plus 2 kg Zinc sulphate, playing pond facilities, after the application of soil watering, pay attention to plant root 8-10 cm, so as not to burn roots, or fertilizers directly contact with the roots causing decay.
Pest and disease control greenhouses plant vegetables most of the time, especially in winter, providing suitable environmental conditions for the overwintering of pests and diseases, which will make the pests and diseases of vegetables more and more serious. Therefore, the prevention of pests and diseases is the key to the success of growing vegetables in greenhouses.
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