Tomato has the biological characteristics of warmth, high light, fertility and semi-early resistance. It grows well in climatic conditions with warm climate, bright light, and less rainy days. It is easy to obtain high yield, high temperature and rain, insufficient light, and often grow weak. The disease is serious.

1.Germination

In order to improve the seed germination speed and increase the germination rate, so that the seedlings and seedlings are strong, the gibberellin can be soaked in 200~300m/L for 6h, the sodium nitrophenolate 6~8mg/L is soaked for 6h, and the amine fresh ester is 10~12. This effect can be achieved by soaking for 6 hours in 10~12mg/L.

2. Promote rooting

Naphthaleneacetic acid (sodium)

Treatment of young shoots with 20~25 mg/L tea acetic acid (sodium) can promote the formation of adventitious roots and promote root formation and development. Spraying seedlings with NAA naphthaleneacetic acid (sodium) at a concentration of 10~12mg/L can promote root system. Growth and development, so as to cte strong seedlings.

3. Prevent seedlings from growing

In order to prevent cockroaches from growing, the internodes are shortened, the stems become thicker, and the plants are short and strong, which is conducive to flower bud differentiation, thus laying a foundation for later production increase, and can be treated with the following agents.

Chlormequat CCC

(1) Spray method: When 2~4 true leaves are used, 300mg/L spray treatment can promote the seedlings to be short and increase the number of flowers.

(2) Rooting: When 30~50cm after cutting, 200mL of 250mg/L chlormequat can be used to prevent tomato plants from growing.

(3) Immersion root: Before planting with chlormequat 500mg/L for 20min, it can improve the quality of seedlings, promote flower bud differentiation, and facilitate early maturity and high yield.

Attention should be paid to the use: weak seedlings, thin ground should not use chlormequat; use concentration can not exceed 500mg / L.

Paclobutrazol

For the seedlings of the cockroach, in the case of 5~6 true leaves, spraying with 10~20 mg/L paclobutrazol can effectively control the long and strong seedlings and promote the axillary bud sprouting.

Must pay attention to the use: strict control of the concentration, the spray should be fine, can not be repeated spray; to prevent the liquid from falling into the soil, to avoid root application, to prevent residue in the soil.

4. Prevent falling flowers and fruits

In order to prevent the flowering and fruit falling due to poor flower development under low temperature or high temperature conditions, the following agents can be used:

2,4-D

It was treated with 10 mg/L 2,4-D solution.

Sodium p-chlorophenoxyacetate

Spray the flower house (or flower) with a small sprayer for 1~2 days after flowering, the concentration is 20~30 mg / L, the concentration is slightly lower when the temperature is high, and the concentration is slightly higher when the temperature is low. Sprinkle the flowering leaves with 8~15 mg/L.

NAA

Spray leaves with 10 mg/L NAA .

Sodium nitrophenolate

Spray leaves with 4~6mg/L sodium nitrophenolate.

The above treatment can effectively prevent the falling flowers and fruit, and accelerate the fruit expansion, increasing the early yield.Note the use:

(1) Use 2,4-D to prevent the liquid from splashing onto the shoots and shoots to prevent the occurrence of phytotoxicity. The concentration should be 10~15 mg/L. More than 25 mg / L will cause severe deformity, too low to prevent the effect of falling flowers and fruit.

(2) After 2,4-D treatment, the fruit is seedless, and the planting is prohibited.

(3) When using sodium p-chlorophenoxyacetate, try to avoid spraying the whole plant, otherwise it may cause slight blade shrinkage, narrow or small phytotoxicity, such as the strengthening of water and fertilizer management can promote the normal occurrence of new leaves. If the whole plant is sprayed, it should be controlled below 8mg/L, especially in vegetable greenhouses and high temperature conditions.

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