Symptoms, causes and prevention measures of tomato fruit
Tomatoes are crops of both fruits and vegetables. Many farmers have planted them. The planting area of ​​tomatoes in China is constantly expanding. But we also know that tomatoes have more pests and diseases. Recently, farmers have reported that the peels of the tomatoes they planted are hard, and there are brown markings and cracks. This is a typical symptom of tomato cork. So what are the symptoms and causes of tomato hibiscus? How to prevent it?
First, the symptoms of tomato cork
Mainly manifested in the hardening of the tomato peel, the fruit is small and the fruit shape is not square, the surface of the fruit has brown spots and cracks of different shades. The tomato fruit is mainly caused by the lack of boron in the plant.
Second, the reason for tomato wood fruit
1. Long-term use of chemical fertilizers leads to acidification of soil and loss of boron in the soil.
2. Some vegetable farmers prefer to use lime to treat the soil when changing the sorghum. Excessive application of lime in the soil may cause boron deficiency.
3. The lack of organic matter in the soil leads to the loss of boron in the plants.
4. Excessive application of potassium fertilizer results in limited absorption of boron by plants.
5. Tomato plants grow prolonged under high temperature conditions, and boron has poor mobility in plants. Boron cannot be timely and fully distributed to urgently needed parts, resulting in local boron deficiency.
Third, the prevention and control measures of tomato wood
1. Rational fertilization to prevent soil acidification or alkalization. It is better to use the biological bacterial fertilizer to adjust the soil to neutral slightly acidic, and it is reasonable to apply chitin, alginic acid and microbial agents to improve the soil.
2. If there is boron deficiency in the soil, organic fertilizer should be added. In particular, the application of decomposed organic fertilizer can make the soil fertile, enhance the soil water retention capacity, promote the root system expansion and strengthen the absorption of boron by the root system. In addition, it is recommended to apply 0.5 kg of boron fertilizer in the base fertilizer to ensure the boron fertilizer content in the soil.
3. Reasonable watering. The principle of watering is to ensure the water supply of the plants and prevent the soil from being too dry or too wet, so as not to affect the absorption of boron by the roots.
4. Once boron deficiency occurs, boron should be added in time. It is recommended to spray the chelated boron on the foliar surface, once every 7~10 days, and even spray 2~3 times.
The above are the symptoms, causes and prevention measures of tomato plug fruit. The appearance of tomato plug fruit is a common phenomenon in the process of tomato planting, but farmers should also pay attention, if not pay attention, it will reduce the commerciality of tomatoes, reduce Production has caused certain economic losses to farmers.
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