The phenomenon of fruit cracking commonly occurs in tomato production, which has a great influence on the yield of tomatoes and the commercial value of fruits. Diseases of phytosanitary diseases of tomato lychee should be controlled by adopting comprehensive cultivation techniques to reduce the rate of cracking and improve yield and product quality.
First, the reasons for the cracking of tomatoes
1, the relationship between tomato cracking and varieties. Radioactive cracking occurs mostly in thin fruit varieties. Cracking begins with the epidermis beneath the fruit pedicle, gradually increasing the cracks, resulting in radial appearance. Generally, pink peels are thin and prone to cracking. Large red varieties have thicker peels. , It is less prone to cracking or cracking.
2, direct sun spot peel. The lack of calcium or boron in the soil or the absorption of roots is impeded, resulting in aging of the peel, which is prone to cracking.
3, improper rainfall or water management caused by rapid changes in soil moisture content, skin and pulp Ministry of uneven water swelling, the peel cracking, leading to cracking.
Second, the prevention and treatment of tomato cracking
1. Choose disease-resistant varieties: such as: American Red King, 903 tomato, fire Dragon Ball and other varieties.
2. Avoid rooting when planting, strengthen soil cultivation and fertilization, protect root growth, and help absorb enough water and nutrients. In the absence of calcium and boron in the soil, appropriate amounts of superphosphate and boron fertilizer may be applied.
3, pruning and picking up the heart to keep the top of the 2-3 leaves to retain the fruit, play a protective effect on the shade of the fruit, avoid direct sunlight caused by the skin aging and cracking.
4, strengthen water management. To prevent the soil from getting too wet or too dry, especially when the tomato enters the result period, the demand for water is the greatest. At this time, the water should be poured into the ground with a small amount of water, keep the soil wet and dry, avoid flooding, and the watering interval should not be too long. , Avoid pouring water after drought caused by rapid changes in water causing cracking.
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