The Latest Summer-Sown Napa Cabbage Cultivation Techniques: A Tutorial
Napa cabbage is a very common leafy vegetable in our daily lives, and it is basically grown in every region. Napa cabbage can be planted in most seasons, and after summer arrives, many people are also planting napa cabbage. However, because summer temperatures are relatively high, the cultivation methods are also somewhat different. So how should summer-sown napa cabbage be grown? Below, the editor brings you the cultivation techniques for summer-sown napa cabbage. Let's take a look!
1. Seed and Site Selection
When planting napa cabbage in summer, choose varieties with strong high-temperature tolerance, strong head-forming ability and good disease resistance, and most importantly, the ability to withstand high temperatures. After selecting the variety, we need to do a good job of choosing the soil. To avoid the harm of pests and diseases, the planting field should be chosen in a place with high terrain and normal drainage and irrigation. And because the growth cycle of napa cabbage is relatively short, we also need to apply sufficient base fertilizer. The cultivation method is mainly ridge cultivation, which can not only improve drainage and irrigation but also enhance aeration.
2. Timely Sowing
The sowing time for napa cabbage in summer is generally around June each year. When planting, pay attention to controlling the planting density, generally planting about 3,200 plants per mu. To improve the full-stand rate, before sowing strong seedlings, do a good job of ridge building and furrow opening, or sow in holes according to the planting density. If the soil moisture is poor, appropriately dribble some water into the furrows or holes, then sow, cover with soil and water. Seedlings will emerge after about 4 days. After emergence, keep the soil moist and do a good job of thinning and final thinning. Start thinning when two true leaves appear, and final thinning when about 5 true leaves appear.
3. Water and Fertilizer Management
Water and fertilizer are very important for the growth of napa cabbage. After napa cabbage enters the early head-forming stage, topdressing should begin. Even if sufficient base fertilizer has been applied, about 50 jin of urea should be topdressed per mu, then the ridges should be rebuilt and watering should begin. Usually, topdressing once is enough. After final thinning, pay attention to keeping the soil moist, and after entering the head-forming stage, appropriately increase the amount of watering. Usually water once every 4 days, and stop watering 5 days before harvest. If the rainy season is encountered or too much watering has been done, then drainage work should also be done well.
4. Pest and Disease Control
Then we should do a good job of pest and disease control. Common pests and diseases of napa cabbage in summer include soft rot, tipburn, aphids and so on. We should focus on controlling these pests and diseases and strengthen prevention. In the early head-forming stage of napa cabbage, do a good job of spraying for disinfection. The spray agent is mainly neophytomycin, and the spraying position should be on the leaf stalks and roots, about once a week. If diseased plants are found, then they should be pulled out in time. This avoids the spread of the disease and an expansion of the affected area.
The above is a brief introduction to the cultivation techniques for summer-sown napa cabbage. For summer-sown napa cabbage, be sure to pay attention to issues such as temperature to ensure healthy growth of the napa cabbage. That is all for today's introduction. This article is for reference only, and I hope it can help everyone!