Prevention and cure of deformed seedlings in plastic greenhouse

The leggy seedlings have fine stems, long internodes, thin leaves, and light colors. Mainly caused by the high temperature and humidity in the shed. Prevention measures: First, according to the temperature and humidity requirements of seedlings, timely ventilation; Second, to ensure that the cover is clean, increase the intensity of light and extend the lighting time; third is to prevent the seedlings are too crowded, to ensure that seedlings have adequate nutrition.

Aging seedlings are small, short stems, and roots are not easy to regenerate new roots, and the leaves are small and thick, dark green in color. It is mainly caused by the long time of seedlings. Prevention and control measures: Strictly control the seedling age, and the best temperature control is to control the water.

In the roots of the roots, no new roots or adventitious roots were found, and the root bark became brown and gradually rotted, resulting in yellowing and wilting of the plants. Control measures: First, choose a well-performing land for seedbeds and raise the ground temperature; Second, use 200~500 times Tianda 2116 plus badaminger root; Third, keep the seedbed temperature at 20°C~25°C during the day and 15°C at night. the above.

After the seedlings of the seedlings were unearthed, the seed coats did not exfoliate the germinal leaves, which made it difficult for the germinal leaves to open. Photosynthesis was affected, and poorly developed and weakly developed seedlings. Prevention and control measures: First, apply organic fertilizer and pouring foot-bottom water, cover soil properly after sowing; Second, timely cover insulation film and straw curtain.

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