How to apply foliar fertilizer to greenhouse tomatoes?

Foliar fertilization in greenhouse tomatoes generally begins after fruit set and until the plants are pulled, which plays an important role in the formation of tomato yield.

First, according to the growth of the tomato to determine the nutritional status of the early stage, the choice of potassium dihydrogen phosphate, compound fertilizer. At the peak of the results, urea, sugar and Dayuan No.1, Jiagean and other leaf-specific nutrient solutions can be selected.

Second, according to the weather conditions to determine the type of nutrition, snow and ice, the lack of light in the greenhouse, poor photosynthesis, tomato sugar supply is insufficient, the effect of leaf sugar spray is better.

Third, the leaf surface sprayed with calcium fertilizer in time. In the tomato phase, it is recommended to spray calcium fertilizer such as calcium chloride, superphosphate, amino acid calcium and calcium supplement to meet its calcium requirement.

Fourth, the interval between foliar fertilization should be suitable for a suitable interval of 5-7 days. The interval of inorganic fertilizer spraying is generally not less than 7 days, and the interval of organic fertilizer is generally about 5 days.

5. Foliar fertilization should be combined with disease prevention to reduce the number of fertilizers applied to the leaves of the cloudy days. When applying fertilizer, add protective fungicides and short-term ventilation after fertilization to reduce the incidence.

6. When the foliar fertilizer is used improperly, the leaves should be rinsed with clean water, the excess fertilizer should be washed away, and the water content of the leaves should be increased to alleviate the damage degree of the leaves.