Recently, the reporter has received a lot of calls from farmers and repeatedly answered the same question they raised. After the weather has warmed up, the quail eggplant in the shed appears abnormal, small, dark, hard, and hardly visible. Then grow, I do not know why?
The above-mentioned symptoms have also been encountered by reporters many times, generally in the winter cold period is more common, which is what we often say "stone tomato." In winter, even in cloudy days, the low light and low temperature in the shed, the photosynthetic efficiency of the leaves are low, the ability of roots to absorb water and nutrients is poor, and the overall performance of the plants is malnutrition, which leads to poor flower bud differentiation and finally to malnutrition. In particular, after encountering a large temperature-fallen weather, eggplants in the shed suffer from low-temperature barriers, short stamens, and even more grenadine. However, now that it has been transferred to summer, the outside temperature is high, and how can there be "stone tomato" in the shed?
After analyzing the reporter's opinion, the current occurrence of “stone eggplant†is mainly caused by the following reasons.
(1) Spend too early or the anther concentration is too high. Master Zhang of Dongxia Town, Qingzhou City, Shandong Province, told the reporter, “We have always bought finished products for this point. We use the same concentration to spend all year round.†In fact, the scientific point of anther concentration The ratio is based on temperature. When the temperature is low in winter, the anther concentration is relatively high. When the temperature is high in summer, the anther concentration is relatively low. Master Zhang points the summer eggplant according to the point anther concentration used in winter, and the concentration must be greatly deviated, resulting in the occurrence of “stone tomatoâ€. In addition, when the vegetable farmers spend some time, the habits are all finished at once, which saves time and effort, and the flowers of some plants have not been opened yet, causing too early, resulting in more “stone tomatoâ€. The day before flowering or flowering on the day of flowering is the most appropriate.
(2) The night temperature is too high. Just transferred to the summer, the regulation of night temperature has not caused the vegetable farmers enough attention. During the daytime, the temperature in the shed is relatively high, and the wall is heavily heat-stored. The wall is dissipated at night. If the temperature in the shed is higher when the air outlet is closed in the afternoon, the nighttime temperature in the shed will be exacerbated, resulting in leggy plants and poor flower bud differentiation. The occurrence of "stone tomato". Normally, when the outlet is closed in the afternoon, the temperature in the shed is appropriate at about 20°C, which can ensure the smooth transformation and transportation of nutrients in the middle of the night, and can ensure that the temperature will not be too high in the middle of the night, resulting in leggy.
(3) The ammonium nitrogen is too high. Too high ammonium ammonium content in soil will inhibit the absorption of potassium by roots, while potassium can promote photosynthesis and transport of photosynthetic products, promote fruit enlargement and improve quality. Therefore, balanced fertilization should be paid attention to, and topdressing potassium fertilizer. .
(4) Soil drought. When the soil is dry, less water is absorbed in the roots, transportation of nutrients is hindered, and normal growth of plants is affected, resulting in insufficient supply of nutrients and "stone tomato" may also occur. Therefore, proper watering should be taken care of.
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