In the past few days, many vegetable farmers have reported an increase in the empty fruit of eggplant, which has caused great losses to vegetable growers.
Empty fruit is a physiological disease. In the current weather, the reporter analyzed that poor flower bud differentiation, insufficient nutritional levels, and improper use of anthers are the main reasons for the increase of empty fruit in eggplants.
First, poor flower bud differentiation.
Low temperature, especially when it is too cloudy for a long time, and low temperature, is the key to poor flower bud differentiation.
20-30°C is the optimum temperature range for flower bud differentiation of eggplant, and below 15°C or above 33°C, it is not conducive to normal flower bud differentiation of eggplant. At present, low temperature should be the main reason, so to avoid the occurrence of empty fruit, we must start from the insulation and temperature.
During production, the temperature of the greenhouse can be controlled to 25-30°C during the day, 18-24°C in the middle of the night, 15-18°C in the middle of the night, and normal growth and normal for the eggplant. Flower bud differentiation creates conditions.
Second, insufficient nutritional levels. Nutrition includes photosynthetic products and fertilizers.
First, in the low-temperature and low-light environment, photosynthetic products are less synthesized, and fruits are less likely to have nutrients, and the fruit has a higher chance of cavities. If the physiological yellow leaf or leaf disease is serious, or if the leaves are too early and the weight is too heavy, the effective leaf area of ​​the plant will be reduced. This will inevitably greatly reduce the amount of photosynthate production, and the fruit will not receive enough nutrients to form empty fruit.
Second, the lack of mineral nutrients needed for fruit growth will also increase the occurrence of empty fruit. For this, it is mainly due to the dual effects of excessive fertilizer control and root injury. 20-30 geniuses are used for fertilization once without paying attention to the use of foliar fertilizers. Therefore, the lack of nutrients needed for eggplant growth will inevitably cause the occurrence of empty fruit. At the same time, rooting, root burning, and root rot caused by over-watering or over-fertilization or root diseases also greatly reduce the amount of roots that absorb and supply nutrients, resulting in insufficient mineral nutrients and empty fruit formation.
For the lack of nutritional level, the reporter recommended vegetable farmers: In the premise of ensuring temperature, but also pay attention to raising roots and leaves, to ensure adequate photosynthesis products and nitrogen, phosphorus, potassium and other minerals in a timely manner nutrition.
Third, the improper use of anthers.
Point anthers can stimulate the development of the ovary, but if the anther concentration is too large or the flowering time is too early, it will easily lead to imbalance in the growth and development of the skin and pulp to form empty fruit. In this case, you must first reduce the concentration of anthers and adjust the time to spend.
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