During the process of pepper planting, there are often three diseases of falling leaves and falling fruits. If there are falling flowers and fruit, it will seriously affect the harvest of pepper. There are many reasons for planting peppers and falling flowers. Taking greenhouse cultivation of peppers as an example, the main reasons for falling flowers and fruit are malnutrition, unfavorable climatic conditions and pests.
1, malnutrition
Due to unfavorable cultivation and management measures, such as excessive cultivation density or excessive application of nitrogen fertilizer, the plants are prolonged, the vegetative growth and reproductive growth are out of balance, and the pepper flowers and fruits are insufficiently nutritious and fall off. In greenhouse cultivation, peppers are easier to grow, so falling flowers and fruit are common phenomena.
2. Unsuitable weather conditions
Winter and spring greenhouses often encounter low light, low temperature weather, affecting pollination, even if pollination, the fruit is also poorly developed, easy to fall off, which is more prominent in rainy and snowy weather. Poor ventilation in the greenhouse, when the humidity is too large, the pepper flowers can not be properly powdered, making it difficult to complete pollination and fertilization, resulting in falling flowers and fruit.
3, pests and diseases
If the pepper develops a virus disease, anthrax, leaf blight, etc., it is also easy to cause falling flowers and fruit. Such as the infection of the virus, often appear dead roof phenomenon, causing falling flowers and fruit; tobacco budworm, cotton bollworm fruit, is also easy to cause fruit loss.
Regarding the falling flowers and fruits of peppers, we should start with strengthening cultivation management, mainly to cultivate strong seedlings, timely planting, rational close planting and scientific fertilization. After the planting, it is necessary to strengthen the ventilation and dehumidification. During the daytime, the temperature in the shed is maintained at 25-28 °C, at night it is 15-18 °C, and the flowering period is at least 15 °C. In the grid, it is recommended to fill the water under the membrane, and not to flood the water.
Through scientific rhyme cultivation management, improve the plant's resistance to stress, pay attention to pest control. In addition to the above measures, 40 to 50 ppm of tomato spirit, 50 ppm of acetic acid spray, dip flower, or 20 to 30 ppm of 2.4-D can be used to spread the flower handle. It can effectively prevent and cure problems such as falling flowers and falling fruits of peppers. The above methods are for reference only!
Huinong School has more relevant agricultural technology knowledge, and continue to pay attention to the Huinong School to answer questions during the planting process.
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