Tomato fruit stiffness is also called bean fruit, is delayed after sitting fruit, the formation of small and hard fruit, large and medium-sized greenhouse spring crop tomato occurs. Below we understand what is the reason for the formation of tomato stiff fruit, and what to lift with the appearance of tomato stiff fruit.

First, what is the reason for the formation of tomato stiff fruit

1, high night temperatures during the nursery, low light, poor development of flower organs, poor pollination and fertilization, poor insulation conditions in the cultivated shed, after flowering with hormone treatment, barely sitting fruit, weak plants are prone to the formation of stiff fruit.

2, the seedling body is too strong, photosynthetic nutrients are scrambled by the seedling body, also easy to form stiff fruit after flowering.

3, too early planting, and do not dare to irrigate, soil drought, soil solution concentration is large, the plant to make less nutrients, that is, the use of hormone treatment of flowers, the fruit does not grow, but also the formation of stiff fruit.

4, young fruit rust mite damage to produce stiff fruit. Rust mites suck the water and nutrients from the fruit so that the young fruit does not have enough nutrients and water supply, resulting in growth stagnation and stiff fruit.

5, if the cultivation is too dense or leaf too dense cover the young fruit so that the young fruit is not ventilated, the supply of carbon dioxide is insufficient to carry out photosynthesis, resulting in insufficient supply of carbohydrates to supply the nutrients required for the expansion of tomatoes and the production of stiff fruit.

Second, tomato stiff fruit with what to lift

Tomato stiff fruit is caused by poor conditions of greenhouse cultivation of a physiological disease, rely on the improvement of cultivation techniques to prevent, the main measures are:

1, not in the night high temperature and low-light conditions of nursery, after the seedling to the night temperature control in the 10-15 ℃, the big bowl of seedling, timely rows of thinning, to keep the film without dust and no bearing drip, the north side of the seedbed The reflective curtains are hung on the north side of the seedbed.

2, strengthen the planting greenhouse insulation measures, not blindly early planting, timely irrigation during the fruiting period, each time the amount of fertilizer can not be too large.

3, strictly in accordance with the instructions for the use of flower and fruit hormones, a reasonable choice of hormone use time and use concentration, if the amount of phosphate fertilizer is too much, should be supplemented with potash.

4, seedlings too prosperous shed in the 1st inflorescence flowering and fruiting period without irrigation, no fertilizer, and to prevent the night temperature is too high, to prevent futile growth.