Eggplants appear as twins, which are fruit deformities caused by physiological diseases.
Cause: The fruit of eggplant is developed by cell division and expansion, but the cell division is basically completed before flowering. After flowering, the fruit grows mainly by cell expansion. At this time, a large amount of nutrients must be transported to the fruit cells to accumulate. In order to make the fruit expand normally, it is necessary to first pollinate and fertilize to form seeds. At this time, the concentration of auxin in the ovary is increased, and the fruit becomes a circulation center, absorbing nutrients and water, and forming normal fruits. If the eggplant flower bud differentiation period encounters a low temperature below 15 °C, or too much fertilizer, when the irrigation is excessive, it will cause excessive nutrition at the growth point. When nutrition satisfies the normal growth and development of eggplant, it may cause excessive cell growth and division. The double ovary and multi-ovary form a multi-carpel double-growth eggplant, and sometimes even more than three grow on a fruit handle. "The eggplant", also known as "pocket".
Prevention and control measures: 1. Strengthen management. During the flowering period, it is necessary to control appropriate environmental conditions, rational irrigation and fertilization, and prevent excessive growth of nutrients. When the eggplant grows to the size of the egg, 15 to 20 kg of urea is applied per acre. As a result, nitrogen and potassium fertilizer should be applied once again. As a result, 0.2% urea or 0.2 to 0.3% potassium dihydrogen phosphate can be sprayed at a later stage. 2. Pay attention to flowering temperature control. Generally, the flower bud differentiation period is about 30 ° C during the day and 20 to 25 ° C at night, and the flower buds are well differentiated. 3. The use of hormones in the preservation of flowers and fruits should be strictly controlled. 4. When there is excessive fertilization or "double eggplant", spray Shibao's water-soluble liquid fertilizer, 800 ~ 1000 times, to alleviate the damage.
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