A small amount of cucumber in greenhouses is a normal phenomenon of plant self-regulation, but a large number of melons must be searched for reasons. The reasons are as follows:
Description
Butafosfan is an organic phosphorus compound used as an injectable source of phosphorus in animals that takes part in energy metabolism, replenishes serum phosphorus levels, supports hepatic function and stimulates fatigued smooth and cardiac muscle. Its physiological rather than its pharmacological action accounts for its very low level of toxicity. Cyanocobalamin (vitamin B12) assist in various metabolic processes, most notably the formation of red blood cells, and stimulates protein, carbohydrate and fat metabolism.
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1. The planting density is high, the field is closed, and the light is insufficient, resulting in less photosynthetic products. ?
2. Lian Duo Lu according to the low temperature or sudden cooling, and night temperature is too high, all may make cucumber growth and development disorders, deterioration of nutritional status, respiratory depletion and less photosynthetic accumulation, resulting in melon.
3. The soil is dry and lack of water, or the irrigation is too large, the humidity is high, the root absorption function is hindered, and the melon or deformed melon is caused.
4. Inappropriate spraying of pesticides or spraying of high concentration, or harmful gas poisoning, resulting in the normal physiological activities of the leaves are destroyed, and functional leaves dry due to pests and diseases, etc., the nutrients produced by the plant can not meet the needs of the melon , it will happen.
5. If topdressing nitrogen fertilizer is too early, when stems and leaves are improperly grown due to improper management of water, fertilizer, and temperature, female flowers will also be reduced and the melons will be severe. ??
6. Ethephon treatment of seedlings, so that a large number of female flowers, such as water and fertilizer can not keep up, no Guagua no hair, but also to melon. ?
7. The growth of stems and leaves is weak, large melons are not picked in time, and young melons cannot be adequately hydrated and turned off. ??
By appropriate thinning, strengthen ventilation and light transmission, cultivating strong roots, early harvesting of root melons, prevention of drought and water shortages, and excessive watering of one time to prevent the temperature from becoming fluctuating, especially paying attention to the adverse effects of continuous cloudy and sudden cooling. Influence, pay attention to insulation and maintain a moderate temperature difference between day and night, to prevent night temperature is too high, pay attention to fertilizer and water management and pest control, you can greatly reduce the occurrence of melon phenomenon.