How to raise vegetable seedlings in summer? Keep these precautions in mind
Summer is hot with high temperatures, and it is also the peak season for vegetable planting. At this time, a large number of vegetables are planted and reach the market in autumn. To improve vegetable yield and quality, many farmers adopt the method of raising seedlings and transplanting them. So what should be noted when raising vegetable seedlings in summer? Let's learn about it together.
1. Prevent high temperatures and heavy rain
Summer is not only hot, but also often has heavy rain, which causes air humidity to surge. If drainage is improper, water can even flow back into the seedling room, damaging greenhouses and facilities, which is very unfavorable to seedling raising work. Therefore, when raising seedlings in summer, drainage measures must be well done, drainage facilities should be checked in advance, and greenhouse film should be repaired in time. For high temperatures, shade nets inside and outside, water curtains, and fans can be used to block light and cool down. When the temperature is too high, spraying water mist can also be used to cool down. If conditions permit, plants can also be cooled by buying ice cubes.
2. Prevent drought
In summer, temperatures are high and light intensity is strong, so the soil substrate dries out very easily. If watering is not timely or the amount of water is too small, the substrate will alternate between dry and wet, which can easily cause basal rot. The growth of seedlings should be carefully observed, the dryness and wetness of the substrate should be checked, and watering should be done in a timely and appropriate amount. Watering should also be done in a proper way, preferably in the morning and evening, and try to avoid watering during the high-temperature period at noon.
3. Prevent leggy growth
When raising seedlings in the high-temperature season of summer, the difference between day and night temperatures is small, and excessively high night temperatures can easily cause seedling leggy growth. Therefore, in seedling management, attention should be paid to increasing ventilation, timely thinning and pricking out of seedlings, and timely spraying of chemical agents for prevention and control. This can prevent seedlings from having long, thin internodes, making the seedlings sturdy, with dark green leaves and thicker leaves, and promoting flower bud differentiation of the seedlings.
4. Prevent pests and diseases
Vegetable seedlings are very susceptible to viral diseases during the high-temperature season, and pests such as aphids and planthoppers also occur, so preventive measures should be taken. First, before sowing, choose virus-resistant varieties. Before sowing, seeds can be soaked for 10 minutes in a 1000-fold solution of 10% trisodium phosphate, then rinsed clean with clear water to eliminate bacteria and viruses carried by the seeds, and at the same time improve the seed germination rate. During growth, a 60-mesh insect-proof net can be used to control aphids, and Encarsia formosa can be used to control planthoppers.
The above is an introduction to the precautions for raising vegetable seedlings in summer. I hope it can help you. To learn more related knowledge, please follow us.