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Using a 25% compound 2,4-D dilution, 1-2 days before and after flowering, apply a brush, dip a flower stalk, or immerse buds in the diluted solution for 2-3 seconds and then remove them. The use of concentration and temperature, the temperature is higher than 15 °C, add 48 to 50 drops of the original drug solution per kilogram of clear water; when the temperature is lower than 15 °C, add 72 to 74 drops of the original drug solution per kilogram of clean water . It is more effective to add gibberellin simultaneously in the 2,4-D solution.
With the 2.5% fruit set diluent, after 4 o'clock in the afternoon on the second day after flowering, the diluted solution was sprayed on the flower and young fruit with a hand-held small sprayer. It should not be sprayed on the top leaves and young leaves of the plants. Spray once every 5 to 7 days. When the greenhouse temperature is higher than 25°C, add 1.25 kg of water per ml of original liquid; when the greenhouse temperature is lower than 25°C and higher than 15°C, add 0.85 kg of water per ml of original liquid; when the temperature of the greenhouse is lower than 15°C, 0.33 kg of water per ml of original liquid.
With Fengling 1500～2500 times solution, buds, flowers and young fruit were sprayed with hand-held small sprayer 1 day before flowering, 1 day after flowering and 1 day after flowering. When the greenhouse temperature is lower than 15°C, one capsule powder (0.4g) is 0.6kg for water; when the greenhouse temperature is higher than 25°C, one capsule powder (0.4g) is 1kg for clean water; when the greenhouse temperature is 15°C～25°C When a capsule of powder (0.4 g) is 0.8 kg of water.
Eggplant flower protection technology key
In order to prevent this from happening, the vegetable growers adopt the following measures to deal with buds or young fruit.