1. Virus curled leaves

During the growth of tomato, when it grows to 20cm, the leaves of some tomatoes with poor geographic and growing conditions begin to curl upward or downward. We gently stretch the curled leaves with our fingers and see that the edges of the leaves are dry, or have aphids curling inside, or have other pathological features. This indicates that the plant is diseased.

Spray with bacterial toxin water, ninamycin water, etc. Using water in the early stages of disease can be a good preventative measure. In addition, spraying naphthalene acetic acid and potassium nitrate extra-root fertilizer can improve disease resistance.

The second is the insufficiency of basic fertilizer and the lack of trace elements.

Which manganese, iron, potassium and other trace elements are obviously insufficient. When planting tomatoes, continuous cropping should be avoided as much as possible. Before planting, the soil should be y dug, applying bottom fertilizer, bottom fertilizer is mainly farmyard manure. If it is planted in the yard or a large area, dig the soil y and pay attention to the application of biological fungal fertilizer and compound fertilizer.

Third, the plant is too heavy.

The most important part of the tomato operation management process is centering, that is, effective control of exuberant growth, so that the main branches bear fruit, to ensure the effective supply of nutrients; pinching branches is the same. Branching out from each main branch should be cut in time. No matter how the management, reasonable control of pinch and pinch management is the most important.