What are the key points to note when raising vegetable seedlings in summer?

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 go to market in autumn, and 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? Follow the editor to learn more.

1. Prevent high temperatures and heavy rain

Summer is not only hot, but also often has heavy rain, causing air humidity to surge. If drainage is improper, water can even backflow 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 prepared, drainage facilities checked in advance, and greenhouse film 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, and for plants with suitable conditions, ice cubes can even be purchased to cool down.

2. Prevent drought

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 damage. The growth of seedlings should be carefully observed, the wet and dry condition of the substrate checked, and watering done in a timely and appropriate amount. Watering should also be done with the right method, preferably in the morning and evening, avoiding watering during the high-temperature period at noon as much as possible.

3. Prevent excessive spindly growth

When raising seedlings in the high-temperature summer season, the difference between day and night temperatures is small, and excessively high night temperatures can easily cause seedlings to grow spindly. 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, the leaf color dark green, and the leaves thicker, and promoting flower bud differentiation of the seedlings.

4. Prevent pests and diseases

Vegetable seedlings raised in the high-temperature season are very easily infected by viral diseases, and at the same time aphids, planthoppers, and other pests may also appear, 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 it can also increase the seed germination rate. During the growth process, 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 key points to note when raising vegetable seedlings in summer. We hope it can help you. To learn more related knowledge, please stay tuned to us.