Pink fruit tomato is plagued by deformities. How to prevent and control the malformed fruit of tomato?

Tomato abnormal fruit has been perplexing many vegetable farmers, especially for pink fruit tomato, abnormal fruit is very common. The common malformed fruits of tomato are multiventricular deformed fruit, tumorous spire, hollow fruit and so on.

Malformed tomato fruit

First, the cause of abnormal fruit of tomato:

The main results are as follows: 1. During flower bud differentiation and development, the low night temperature of 5 ℃ or 3 ℃ is easy to produce abnormal fruit, which is mainly caused by the deformity of 1 ear and 2 ear of tomato in winter and spring.

2. The growth of tomato seedlings was inhibited for a long time due to the elongation of seedling age, low temperature or drought for a long time. Although there were suitable conditions, the cork tissue could not keep up with the growth rate of normal tissue, and the cracking fruit, exserted fruit or scar fruit were formed.

3. Partial application of nitrogen fertilizer, too much nitrogen fertilizer leads to excessive differentiation of tomato flower buds, increase in the number of ventricles, and become a multiventricular malformed fruit.

4. Improper use of hormones, in order to prevent tomato from falling flowers and fruits, it is often used to dip tomato flowers with 2meme 4murD or tomato spirit, but the concentration is not accurate, repeated dipping flowers, high temperature when dipping flowers, soil drought and so on are easy to produce abnormal tomato fruits. When the flowers are not developed, dipping flowers are easy to produce hollow fruits. In addition, when the seedlings grow, the concentration of plant growth regulators is high or more times, so that the seedlings are under control, and then dipped in flowers, it is also easy to produce deformed fruits.

Second, prevention and control methods:

1. Strengthen the management of seedling stage. In order to cultivate strong seedlings of suitable age, it is appropriate to control the daily temperature of 20: 25 ℃ and night temperature of 13-17 ℃ after soil breaking, keep the soil moist, and breed strong seedlings of suitable age with short internodes and about 30 days.

2. The first fruit of the ear fruit is easy to form abnormal fruit, which should be thinned before dipping in the flower.

3. Strengthen the management of fertilizer and water. When fertilizing, nitrogen, phosphorus and potassium should be combined, formula fertilization should be adopted, and nitrogen fertilizer should not be applied partially. At the same time, watering the tomato plant according to its growth, appearance, weather and need of water, do not suddenly dry or wet.

4. the best time to dip in flowers is the tomato flowers that are fully blooming on the same day, that is, dip them immediately, and mark them with red or ink in the liquid to avoid repeated dipping. The work of dipping flowers should be finished before 11:00 in the morning. Since 2pj4murD is not as stable as tomato spirit, it is suitable to use the method of holding calyx and pedicel when using 2pj4murD. Dipping the anther liquid flexibly according to the temperature, when the temperature is high, the concentration is lower, and when the temperature is low, the concentration is higher.

5. Tomato needs rational use of growth regulators, seedlings grow too much, that is, excessive nutrition, do not excessive use of cooling, drought control seedlings, abuse of growth regulators and other measures, on the basis of strengthening ventilation and proper humidity control, spray 800 times Fengshou No. 1 twice.