After wearing the seedlings, the symptoms of the seedlings were unearthed, the embryonic leaves did not fall off from the mid-sheath, and the germinal leaves were difficult to open. Photosynthesis was affected and weak seedlings with poor growth were developed. 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. Symptoms of root shoots are rootless or rarely new roots, adventitious roots, root bark turning brown, and rot gradually, causing the plants to turn yellow and wilt. Prevention measures: First, maintain proper temperature, choose a good breathable land for seedbeds, raise the temperature of the soil; keep the seedbed temperature at 20°C-25°C during the day and 15°C or more at night. The second is to reduce the humidity inside the shed and do it in the seedbed. The third is to pay attention to increased lighting, to choose a place with adequate light to build a seedbed. The fourth is to give enough farmyard fertilizer to cultivate fertility and cultivate strong seedlings. It can also increase ground temperature and reduce disease occurrence.
The symptoms of leggy seedlings are thin stems, long internodes, thin leaves, and pale color, mainly due to high temperature and high humidity. Control methods: First, according to the requirements of temperature and humidity seedlings, timely ventilation, especially at night, the temperature should be appropriately lower; Second, we must ensure that the transparent cover clean, try to increase the light intensity and light time; third is to prevent seedlings are too crowded To ensure adequate supply of nutrients for seedlings.
Freeze Dried Vegetables,Freeze Dried Veggies,Freeze Dried Greens,Freeze Dried Veg
Topower Technology Limited , https://www.topower-foods.com