Autumn extension peppers generally set fruit from late September to early and mid-October, and keep the fruit warm from late October to New Year's Day and Spring Festival. Since the optimum temperature for pepper flowering and fruiting is 23°C to 28°C, and the temperature changes in autumn, fine management is the key to achieve high yields of peppers in autumn. Specifically, it is necessary to finely manage the temperature, moisture, fertilizer, pest control and other aspects.
When the daytime temperature is higher than 28℃, the outside of the greenhouse should be covered with straw curtains or double-layer sunshade nets to cool down, and the skirts should be opened for day and night ventilation. When the daytime temperature is lower than 20℃, the straw curtains and sunshade nets can be removed; When the night temperature is lower than 13°C, the small shed should be buckled in the big shed. When the night temperature is lower than 5°C, the small arch shed should be covered with straw curtains.
After entering late October, when the temperature is below 0°C, the grass curtains in the large and small sheds should be appropriately thickened. At the same time, no matter what the weather is, the grass curtains must be exposed to light. The time for uncovering the grass curtains on icy and snowy days can be shortened and the cover will be re-covered after 4 pm The outside air temperature continued to drop in November. It is necessary to further reduce the amount and time of the air release, and add a small arch shed in the large shed. The outside temperature is lower in December, so thick straw curtains should be placed on the small arches to prevent freezing. Conditional vegetable farmers can cover a layer of agricultural film on the outside of the straw curtain, which can prevent moisture and increase the heat preservation effect.
The fertilizer for the cultivation of autumn pepper is based on base fertilizer, and top dressing is based on compound fertilizer. Generally, it is based on seedling top dressing. Nitrogen fertilizer should not be excessive, otherwise it will cause a lot of flower and fruit drop. Specifically, it is to apply fertilizer once 10 days after planting and at the early stage of fruit setting. Apply 10 kg of compound fertilizer per mu each time. In the full fruit setting period, apply compound fertilizer 10-15 kg or urea. 8 kg, 10 kg potassium sulfate. The top dressing is controlled at 3 to 4 times during the whole growth period. When the fruit is basically sitting, combined with disease control, apply foliar topdressing, spray evenly with 300 times each of potassium dihydrogen phosphate and urea 2~3 times, spraying once every 7~10 days, which can promote fruit expansion. Increase production.
Remove the long branches, injured branches and diseased branches below the branches in time. Weak door peppers and counter peppers should be removed in time to prevent falling seedlings. The two-branched buds should be removed as soon as possible to increase the yield. In the case of double plant cultivation, the weak branches in the inner chamber should be removed to facilitate the formation of large fruits.
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