1. Incomplete fertilization. The optimum temperature for sweet pepper pollen germination is 20-30°C. Above this temperature, the pollen germination rate is reduced, and it is easy to produce unreal fruits. When the temperature is lower than 13°C, normal fertilization cannot be performed, and fertilization is unfavorable, and falling, falling fruit, parthenocarpy, and deformed fruit are liable to occur.
2. When the light is poor, the fertilizer is insufficient, and the nutrients obtained from the fruit are small or uneven, it is also prone to malformation.
3. The enlargement of the pepper fruit is firstly longitudinally elongated and then laterally elongated. When the root system is not well developed or damaged, or the soil becomes dry and lacks water, or because the concentration of the soil solution is too high, the water absorption of the root system will be affected. A short diameter is formed; if the night temperature is too low, it is easy to form a pointed tip.
4. When a fruit that has grown to a certain degree has suffered severe drought, the fruit will lose its luster, and the fruits under the sun will turn into dull colored dull fruit, which is likely to occur when the greenhouse enters a hot season.
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