Plant growth regulators and their main functions commonly used in the cultivation of tomato facilities

1. Ethephon inhibits growth. Due to high temperature, high humidity, and lack of transplanting or planting, the seedlings will grow indefinitely during the nursery period. When they are in the clover, they use 0.03% of the ethephon.龊瘢 ジ舜 ジ舜 ジ舜 常 常 捣 捣 捣 捣 捣 捣 捣 捣 捣 捣 捣 捣 捣 捣 捣 捣 捣 捣 捣 捣 捣 捣 捣 捣 捣 捣 捣 捣 捣 捣 捣 4. Painted stems: When the fruit is ripe, 0.03% of ethephon and oyster oysters can be used to interpret Ishine—5 days for ripening. Coated fruit: 0.04% of ethephon solution was applied to the sepals of the white ripening fruit flower and the fruit surface near it, and it could be red-sown 6-8 days earlier. Dip fruit: After the color conversion period, the fruit is soaked in 0.02% ethephon solution for 1 minute, then removed and aged at 25°C. After 4-6 days, it can turn red, but ripening fruit. The color is not as bright as the naturally mature plants. Field spraying fruit: In the late period of tomato growth, if the outside conditions are not suitable for its growth, or when the processing is to be harvested once, the 0.1% ethephon solution can be sprayed before harvesting.
2. Gibberellin promotes fruit setting. During the flowering period, spraying with 0.001%-0.005% gibberellin to decorate and decorate flowers can preserve and protect the fruit, promote fruit growth and prevent empty fruit.
3. Paclobutrazol prevents leggy growth, spraying 0.015% paclobutrazol solution during tomato seedling growth, controlling leggy, promoting reproductive growth, favoring flowering results, advance harvesting period, increasing early yield and total yield, and early blight and viral disease. The rate and disease index will also drop significantly. The growth-inhibitory tomato is treated with paclobutrazol, and the inhibition period is short, and the growth can be resumed shortly after the colonization, which is beneficial to the growth of the stem and the resistance to disease.
4. The kiyoke prevents leggy. In the process of tomato seedling cultivation, sometimes due to high outside temperature, too much fertilizer, too much water, excessive density, and too fast growth, the seedlings become leggy. In addition to seedlings, planting, control of watering, and enhanced ventilation, they can be used in 3-4 leaves. 7 days before planting, soil was poured with 0.025%--0.05% CCC to prevent leggy. The seedlings are smaller and have a slight degree of spray. The leaves and stalks of the seedlings are evenly covered with fine droplets and do not flow. The seedlings are larger and have a longer length and can be sprayed or poured. Usually at 18-25 °C, choose early, late or cloudy days, ventilation is prohibited after application, greenhouses must be affixed to a small shed or close the doors and windows, increase the temperature and promote liquid absorption. Do not water within 1 day after application, so as not to reduce the efficacy, no medicine is available at noon. 10 days after spraying began to take effect, the effectiveness of sustainable 20-30 days. If the seedlings do not appear to be leggy, it is best not to use chlorella. Even if you use chlormequat, the number should not exceed two times.
5.2,4-D
Flower protection, fruit protection. During flowering, a large number of falling flowers occurs when the night temperature is lower than 13°C or higher than 22°C. With 0.001% - 0.0025% of liquid soaked flowers, when the temperature is low, the concentration is higher, and vice versa. The lower concentration can effectively prevent flowering, mature 10-15 days earlier, and increase early yield.
6. Anti-dropping flower preserved fruit. If the night temperature is lower than 13°C or higher than 22°C, a large number of falling flowers will occur. When there are 2-3 flower spikes open, with 0.001% -0.005% of the anti-droplet spray, when the temperature is higher than 30 °C, with 0.001% concentration; 20-30 °C, with 0.0025% - 0.003%; low At 20°C, use a hand-held sprayer to spray the flower spikes with a spray rate of 0.005%. Spike a flower ear once. The different plants and ears of the same field can be sprayed once every 3-5 days to spray. Wet flowers are degrees.
7. Calcium salt reduces cracking. Spraying the plants with 0.1% calcium salt solution in the first half of harvest can reduce the degree of fruit cracking; dipping the fruit in 0.1% calcium salt solution can reduce the occurrence of cracking during transportation and during storage.
8. Niacin promotes growth. Seed sowing before sowing: before seedling, soaked with 0.005% - 0.001% nitric acid solution 10-12 hours, washed with water, germination after sowing, neat emergence, seedlings strong, cold resistance, can prevent the epidemic in the seedbed. Seed bed use: After emergence, if the seedlings grow thin and the leaves are yellow, spray the whole plant with 0.005%--0.007% nitric acid solution once to resume normal growth. In the middle and late period, the seedbed temperature of 26-28 °C, sprayed with 0.005%--0.007% nitric acid solution once is especially necessary to prevent early blight. Before and after colonization: 6 to 7 days before planting, spray with a 0.005% solution of nitric acid for 1 time, to build a strong tree and promote early bud emergence. After colonization and resurrection, spray 0.0005% Neissvide solution once every 10-15 days for 2 times to prevent early blight and virus disease. Fruit use: When the young fruit grows to the size of the egg, spraying with a 0.01% solution of nicotinic acid every 7 days for 2 times can promote fruit enlargement, thickening of the flesh, increased sugar content, and improved quality. Later use: Infinity growth tomato, in the later stage of the result, spray the whole plant with 0.001% nitric acid solution once to prevent premature aging of plants, extend the harvest period, and increase the total yield. In addition to soaking, spray nicosine 5-6 times throughout the growing period. 9. Diffuse amines preserved flowers. Spraying once during the initial flowering period, if the weather conditions are suitable, with a concentration of 0.006%, if the rain is more, it can be increased to 0.008%, if the climate is dry, the plant growth is thin, 0.004% is appropriate. Spraying within 6 hours after spraying, spraying in a timely manner, continuous rainy days must be added to the spray, can make proper control, no luxuriant plants, compact plant type, increase production and increase.

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