Winter greenhouse tomato curl leaves

The winter is the peak of greenhouse cultivation. Many fruits and vegetables planted outdoors are moved into greenhouses. However, when greenhouse plants are planted, they will find many problems because the cultivation technology of greenhouses is totally different from that of outdoor ones. To manage the cultivation of greenhouses, it is necessary to understand some technical knowledge, and there will be many problems in the use of soil and fertilizer. It requires technical personnel to analyze them one by one. Here, the technicians of Golden Baby will give you an analysis of the reasons for rolling tomatoes in greenhouses.

Physiological curling of tomato is mainly reflected in the longitudinal rolling of the leaves. The leaves are cylindrical. When the leaves are severe, the leaves become thick and brittle. The degree of severity of leaf rolling varies greatly. From the perspective of the whole plant, some plants only have leaf curls in the lower or middle and lower leaves, and some of the entire plants have leaf rolling.

Causes of leaf curls The Gymboree technicians give you analysis from several parts:

1, poor root development, injury damage, water absorption capacity is weak, leaving the plant dry.

2, the temperature is abnormal.

When the temperature exceeds 35°C, not only photosynthesis is weakened, but also the structure of the chloroplasts is destroyed and the leaves are wilted. When the nighttime temperature is lower than 6°C, there will be a low-temperature barrier, so that the back of the upper leaves of the plants will turn upward and the leaves will be dark green and dull. Leaf margins gradually become dry or individual leaves wilting and dry.

3, high temperatures, soil drought.

High temperature leaves have large water transpiration and more water loss. In order to reduce the transpiration of water, the stomata on the leaves closes, resulting in the blade gathering or curling, which is a physiological protection.

4, excessive soil moisture.

Not only did the roots grow slowly, the roots became shallow, and when the roots became dark, they died. Furthermore, excessive soil moisture led to a decrease in the oxygen content of the soil, and the roots were subjected to anaerobic respiration, which forced the root system to undergo anaerobic respiration, resulting in anaerobic respiration. Alcohol, lactic acid, etc., are accumulated in plants to cause poisoning to the plants, resulting in malnutrition in the plants and rolling leaves.

5. Sufficient exile in the booth.

In particular, under the action of dry wind, a large amount of water leaves on the windward side of the plant can be wilted, causing the leaves to gather up or curl up. At the same time, a large amount of air will reduce the temperature inside the greenhouse. If the temperature is too low, the back of the upper leaves of the plants will roll upwards. Shrink.

6, lack of nutrition.

The low content of organic matter in the soil and the lack of essential elements all cause abnormal plant growth. In particular, when the fruit is sitting or after harvesting the fruit, it needs a lot of nutrients. If there is no effective supply, the first fruiting leaves will be slightly curled. Or, the whole plant leaves are tube-shaped and become brittle.

7, iron deficiency, manganese and other trace elements in the soil.

Will also roll leaf, this leaf is often accompanied by yellowing and purple leaves and other symptoms.

8, excessive partial nitrogen fertilizer, especially when nitrate-rich, small leaf curl.

9, pruning, topping overweight, too few leaves on the plant.

There are few photosynthetic products produced by the leaves, which can not meet the needs of fertility, affect the normal metabolic activities, and thus the leaf upturn phenomenon. In addition, when the pruning and picking are done too early, the phosphate absorbed by the roots is transported upwards through the lower leaves to the upper fresh leaves. Since the pruning is transported too early, it accumulates in the lower leaves and hardens and curls.

Tomato leaf rolling often occurs during the growing season. A very small number of genus characteristics, most of which are caused by environmental conditions and virus disease damage, curl up and curl up two kinds of curls, should be a specific analysis of the specific issues to identify the cause, From the cultivation and management, the right medicine. In general, viral diseases cause leaf curling to occur on the top of new leaves, accompanied by the symptoms of Mingmai mosaics, and the lower leaves are not easily affected; while physiological leaflets occur on the leaves of the entire plant and there are no flowers in the veins. Leaf symptoms.

The technology provided by the golden treasure expert will help you when growing tomatoes. The golden treasure technical personnel will be in different periods, according to the different customer enters the telephone content, provides each kind of technical guidance.

friendly reminder:
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