Watermelon Seedling transplanting is conducive to early maturing and high yield, full seedling seedlings. Therefore, the cultivation of strong seedlings is the basis for the high yield of watermelon.
One, watermelon tall seedlings (a) symptoms. The watermelon tall seedlings showed slender young stems, light color, thin and small cotyledons, and light green color. The main reasons for this are the excessive humidity in the seedbed, the high temperature, the lack of light, or the overcrowding of the seedbed. Because of its malnutrition, the tall planted seedlings grow slowly and their leaves are small and thin. It is difficult to form strong seedlings and they are easy to fall down. They have poor resistance and are susceptible to dead seedlings. (b) Prevention and control measures. The temperature and humidity management and ventilation during the seedling period should be strengthened. When the seeds are topped, the cotyledons should be flattened. Avoid high temperature and high humidity. Use daytime temperatures of 25°C to 32°C, nighttime temperatures of 15°C to 18°C, and humidity of 40% to 60%. If the seedbed has high humidity, proper ventilation and ventilation should be taken, or fine soil should be sprinkled on the bed to reduce the humidity of the seedbed. In the later period, according to the weather and the growth of the melon seedlings, the seedlings or seedlings will be properly cultivated.
Second, watermelon rigid seedlings (a) symptoms. Watermelon rigid seedlings are commonly known as “aging seedlings†and indicate that the soil has a long time, growth is slow after unearthing, the young stems are short, the cotyledons are small and thick, the dark color is dark, and the roots are short and small, and even no lateral roots. The main reasons for this are the low seed bed temperature, excessive hard or dry bed soil, excessive fertilization, insufficient nutrition for burning roots or nutritious soil, and use of Chen seeds or dried seeds. (b) Prevention and control measures. Choose new seeds that are strong and full of vitality. Prepare nutritious soils in strict proportion and mix well. Maintain appropriate temperature and humidity, apply the compound fertilizer solution to the rigidified seedlings that have occurred, avoid excessive concentrations, and avoid pouring in rainy days to prevent excessive humidity or burning of roots.
Flower Seeds,Potmarigold Calendula,Sweet William,Bigflower Coreopsis
Chengdu Lv Mu Tian Xia Agricultural Technology Co. LTD , http://www.cdlmtx.com