How to cultivate green beans in early spring? What are the points that need attention? Today, Huinong.com has to organize a cultivation technique for early-season greenhouse beans. You can have a look at the friends who have the needs.
Nursery
Seedlings are carried out by means of nutrient soil, nutrient mash, etc., and the sowing period is generally selected when the seedbed reaches 10 °C or higher. Pour the bottom of the water first, and 3-4 pieces of each soil (钵) in the middle, cover the thin soil, and cover the mulch. After the emergence of the seedlings, the temperature is controlled at 20~25°C during the day and 15°C at night. If the humidity in the seedbed is too large, timely ventilation and moisture, the seedlings should be properly smelted one week before transplanting, in order to adapt to the growing environment after planting.
2. Planting and shed management
When the seedlings grow to 4 to 5 true leaves, apply the base fertilizer 10 days in advance, cover the mulch, and choose to plant in fine weather in the morning. After planting, the shed should maintain a high temperature, which is conducive to slowing down the seedlings.
In case of cold spring, cover the grass around the greenhouse or buckle the small arch shed on the surface to keep the temperature of the shed at 25~28°C and 15~20°C at night. After slowing down the seedlings, properly ventilate and cool down to prevent lengthening.
When the green beans enter the flowering stage, the temperature should be 22 to 25 ° C during the day and 15 to 20 ° C at night, and the relative humidity is 80%.
In the pod-forming period, the outside temperature is also rising, and the ventilation should be gradually increased to prevent the occurrence of high temperature and high humidity and falling flowers. When the outside temperature is not lower than 15 °C, it can be ventilated day and night to cool down the moisture and promote flowering and pod formation.
3. Plant adjustment
Before planting the vines, it is necessary to carry out the scaffolding. During the process of plant growth, it is necessary to timely manage the vines and pick the hearts. In production, when the plant grows to the top of the frame, the main vine growth point is removed, which promotes the rapid growth of the middle and upper lateral buds, which is conducive to the ripening of the lower pods, raising the morning market, making the side vines pods, increasing the yield, and improving the ventilation of the plants. Light conditions reduce the occurrence of diseases.
4. Control falling flowers and pods
4.1 Physiological factors
The main vines of the beans are long, the number of festivals is many, and there are many flower buds. The nutrients produced by leaf photosynthesis do not adequately meet the needs of these flower buds. In order to balance the nutrition, it is necessary to drop some flowers. Solution: Improve ventilation and light transmission conditions, and reasonably close planting.
4.2 Nutritional deficiency
Watering is too early in the flowering stage, and nitrogen fertilizer is applied in the early stage; the branches and leaves are too luxuriant, the ventilation is poor, the light is insufficient; the fertilizer is less, and the harvest is not timely, etc., which will cause the flowers to fall into the pods. Solution: Control water during seedling and flowering, use fertile farmyard manure and microbial fertilizer, and harvest in time.
4.3 Pollination and fertilization are blocked
In the flowering period, when the temperature exceeds 30 °C, the flower will fall. When the temperature of the chamber is lower than l3 °C, the fruit will fall. Solution: Adjust the temperature of the shed to avoid the adverse effects of high and low temperatures.
The above is just a brief introduction to the cultivation techniques of early-season greenhouse peas. For those who want to know more details, please continue to pay attention to Hui Nong.
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