Causes and Control measures of the latest Tomato fruits

The occurrence of stiff fruits in tomatoes is a common phenomenon in the process of tomato production, which seriously affects the quality and yield of tomatoes and causes huge economic losses to farmers. So what is the cause of tomato nuts? How to prevent and cure it? Come and have a look with the editor.

First, the cause of tomato fruit.

The main results are as follows: 1. the flowering temperature is too high and the pollination is poor, which hinders the formation of seeds and pulp, and the nutrients needed for fruit expansion can not be supplied, which slows down the fruit expansion, and the phenomenon of stiff fruit will appear over a long time.

2. In the process of planting, in order to promote the growth of tomatoes, many farmers apply too much nitrogen fertilizer, resulting in excessive vegetative growth of plants, inhibition of reproductive growth and stiff fruits.

3. During the expansion period of tomato fruit, photosynthesis can not synthesize sufficient nutrients, resulting in stagnation of fruit growth, or lack of fertilizer and water supply or high temperature and drought.

4. The improper use of hormones or excessive phosphate fertilizer in many farmers will affect the absorption of potash fertilizer by the root system and produce stiff fruit.

II. Prevention and control measures

1. Reasonable control of temperature

Too low temperature is the main cause of stiff fruit, especially in spring and autumn overcast, rainy and snowy weather, less light, high night temperature, tomato leaves produce less nutrients, but strong respiration at night, consumption is larger, so the more stiff fruit is formed. At this time, it is necessary to adjust the temperature of the shed, and control the temperature of the shed at night between 10 and 12 degrees, in order to reduce nutrient consumption and reduce the occurrence of nuts.

2. Rational watering and fertilization

Topdressing of tomatoes is mainly based on nitrogen, phosphorus and potassium compound fertilizer and organic fertilizer, and it is appropriate to apply 20 kilograms of nitrogen, phosphorus and potassium per mu each time. Insufficient fertilizer supply, poor plant growth or excessive fertilizer growth are easy to cause the occurrence of stiff fruit. Especially tomatoes in the late growth period, we must ensure adequate nutrients, especially pay attention to the supplement of potash fertilizer. It is best to use micro-irrigation, do not flood irrigation, so as to avoid serious root damage in low temperature, resulting in the weakening of the ability of roots to absorb nutrients, resulting in the occurrence of tomato fruit.

3. Rational use of plant growth regulators.

In the tomato flower is to pay attention to the time, concentration, dosage, it is best when the tomato flowers are fully open, early easy to form stiff fruit, too late fruit easy to crack. The preparation concentration should be reasonable. Under normal circumstances, the concentration of 2pj4 color D is 10mg / kg, and at low temperature, the concentration should not exceed 25mg / kg. If the concentration is too high, it will cause stiff fruit. In addition, 0.5% potassium dihydrogen phosphate mixed with plant growth regulators can be foliar sprayed to supplement nutrition, regulate growth, and reduce nuts.

The above is the introduction of the causes and control measures of tomato fruit. I hope it can help you. If you want to know more about it, please follow us.