5. Delay aging and increase production

In order to inhibit seedling disease and later occurrence of anthracnose, epidemic and viral diseases, cte strong seedlings, increase fruit set rate in the middle and late stages, increase fruit shape, increase yield, and delay plant senescence, and extend harvesting. Period, can be treated with the following agents:

DA-6

At the seedling stage, 10 mg/L of amine fresh ester was used for foliar application, and 25 to 30 kg of liquid per 667 m2 was used. In the field, 12~15 mg/L of amine fresh ester was sprayed on the foliar surface, 50kg per 667m2, sprayed a second time after 10d, and sprayed twice.

Increased amine production

In the seedling stage, the 25-m/L-producing amine is used for foliar application, and the liquid is 25~30kg per 667m2. In the field, 30mg/L of the augmented amine was used for foliar application, 50 kg of liquid per 667 m2, and the second time after 7-10 days, a total of 2 sprays.

Brassinolide

At the seedling stage, 0.01 mg/L of brassinolide was used for foliar application, and 25 to 30 kg of liquid per 667 m2. In the field, 0.05 mg/L of brassinolide was used as foliar spray, 50 kg per 667 m2, and sprayed a second time after 7-10 d, and sprayed twice.

Triacontanol

The optimum concentration for application on citrus is 0.5 mg/L, and the amount of liquid per 667 m2 is 50L.

It can be sprayed 2~3 times in the growth period. When spraying, it can be mixed with potassium dihydrogen phosphate or urea to increase the yield. The interval is 7~10 d.

Note the use:

(1) The above pesticides should be accurately used to prevent the growth of the plant due to excessive concentration and cannot be mixed with alkaline pesticides.

(2) When applying triacontanol, pay attention to the quality of the drug. If the liquid turbidity and milking phenomenon are found, the effect of triacontanol will be affected.

6. Promote tomato precocity

Ethephon

The application of ethephon in the harvesting period promotes the early maturity of the fruit. It has been widely used in production, and the effect is remarkable. It can not only mature early, increase early yield, but also is beneficial to the maturity of the late tomato. For the storage and processing of tomato varieties, in order to facilitate centralized processing, ethephon can be applied, and the content of lycopene, sugar, acid, etc., which is treated with ethephon, is similar to that of normal mature fruits.

The method of use is as follows:

(1) Smear method: When the fruit of the tomato is about to enter the color-developing period (the tomato is white), it can be soaked in a 4 000 mg/L ethephon solution with a small towel or gauze glove, The tomato fruit can be rubbed or touched, and the fruit treated with ethephon can be matured 6 to 8 days earlier, and the fruit is bright and shiny.

(2) Soaking fruit method: If the tomato that has entered the color-developing period is picked and then ripened, the fruit can be sprayed or soaked for 1 min with 2000mg/L of ethephon, and then the tomato is placed in a warm place (22~ 25C) or ripening indoors, but ripened fruits are not as bright as the plants.

(3) Daejeon spraying method: For the processing tomato that is harvested at one time, most of the fruit has turned red in the late growth stage, but some of the fruit can not be used for processing. In order to accelerate fruit ripening, the whole plant can be sprayed. The 1 000 mg/L ethephon solution accelerates the ripening of the fruit. For the autumn tomato or alpine tomato cted in the late season, the temperature gradually decreases in the late growth stage, and the frost can be sprayed on the plant or fruit by ethephon, which can promote the early maturity of the fruit.

Attention should be paid to the application of ethephon to promote early tomato ripening. The concentration of ethephon should be strictly controlled. In the normal growing season of tomato, the plants should not be sprayed with ethephon because the plants are treated with ethephon, especially with higher concentration of ethylene. Lee, will inhibit the growth and development of the plant, and make the branches and leaves turn yellow quickly, which will seriously affect the yield.

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