Eggplants are cultivated in protected areas, and due to environmental restrictions such as temperature, if they do not take the necessary technical measures, they can easily form fallen flowers or deformed fruit, resulting in reduced production and income. Through years of practice, the author believes that its causes are mainly in the following nine aspects: 1) The use of hormones to treat flowers (i.e., use 900 fluids to decorate or daub flower stalks) is inaccurate. Hormone treatment of flowers the best time is only 3d (days), that is, flowers on the day of opening and 2d before opening, more than this 3d treatment is invalid, early processing easy to form a dead eggplant (death). Countermeasures: When the eggplant flowers all become purple and open for a total of 3 days, hormone treatment can be used, but the best day to open the treatment. 2) If the hormone concentration is too large, it is easy to form teratogenic fruit. Countermeasures: The concentration is generally required to be 0.003%, but it should be handled flexibly, that is, when the temperature is high, it is slightly lighter, and when the temperature is low, it is slightly thicker. If the greenhouse is cultivated in a dome-shaped greenhouse, temperature regulation is limited. When the average ambient temperature is below 15°C, a concentration of 0.004%-0.005% is appropriate. 3) Long-term low light. Under weak light conditions, the photosynthesis of plants is poor, and it is easy to form more short styles and cause flowering. The effect of hormone treatment is not good. Countermeasures: In sunny days, early cover of the grass cover the extension of light time, cloudy days should also be exposed to absorb scattered light, rainy days to shorten the exposing time, but can not but expose. Sunlight greenhouse back wall hanging reflective screen, arch-shaped greenhouse floor reflective film. Light up with fluorescent lamps at night. Spray "strong light and spirit" regularly. 4) At night, high temperatures tend to form short styles and fall flowers. Especially at high temperatures during the seedling stage, flower buds will differentiate in advance and easily form short styles and fall. Countermeasures: Reduce the night temperature to 15--17°C. 5) Flowers grown by weakly growing plants, with thin pedicels, thin flowers, and short and easy styles, can be formed using hormones. Countermeasures: Eliminate weak seedlings and stiff seedlings when planting and select strong seedlings. Remove the door eggplant flowers, artificially extend the period of vegetative growth, while increasing fertilization material, and promote root growth, the fruit after sitting according to the growth of the plant, the implementation of limited fruit management. 6) The soil is dry and the air is dry. The concentration of fertilizer in the soil is too large. Salt accumulates on the surface of the soil and the leaves show a "gold-rimmed" appearance. The flower growth is hindered, or the flower growth is impaired or dried. Countermeasures: Timely filling with salt to keep the soil moist. The amount of fertilizer should not be too large at one time, so that you can eat less frequently. Spray FD-Landi Feng or spray Shibao. 7) The flowers that are grown by the proteobacteria who are overgrown with nutrients tend to fall. Even if hormones are used to treat them, they will form erythropods or malformed fruit. This is because the nutrients produced by the leaves are being competed by the leaves and stems. Countermeasures: In the right time, the seedlings of the seedlings in the seedlings should be controlled in the right time, and the water and fertilizer should be controlled appropriately during the seedling stage, and the cultivating soil should be used to turn the vegetative growth into reproductive growth. Spray Huangcao natural brassin to balance vegetative growth and reproductive growth. 8) Treating flowers with hormones under high temperature conditions is easy to form malformed fruit. Countermeasures: The temperature should exceed 30°C. Flowers should be stopped. Flowers that are open on the day must be processed at 30°C or less. For unopened purple flowers, the unfinished flowers can be continued until 4:00 PM. deal with. 9) Long-term air humidity above 85% is prone to gray mold and blight, which leads to flower pollination difficulties. Hormone treatment is also easy to drop or rotten fruit. Countermeasures: Pay attention to ventilate and ventilate on time to avoid flooding and increase humidity. It is best to use dust or aerosols to prevent disease. Adding 1% of quick-acting or acetaminophen to the hormonal solution can prevent it.
Greenfarm Import And Export Co., Ltd. , http://www.jn-foods.cn