Detailed Explanation of the Key Field Management Techniques for Perilla
Perilla (Perilla frutescens), a member of the Lamiaceae family, is an annual herbaceous plant with a very distinctive fragrance, and it is popular with many people for use in stir-fries. Perilla also has effects such as inducing sweating and relieving cold, and relieving depression and stopping vomiting. It can effectively prevent colds caused by exposure to cold, and today perilla is grown over a very wide area. So how should we manage perilla when growing it? Below, the editor brings you the key points for field management of perilla. Let's take a look!
1. Thinning and Weeding
During the early growth stage, perilla has relatively weak growth capacity, so we should also pay attention to loosening the soil and weeding. Especially in direct-seeded areas, thinning should also be done well. When the seedlings grow to about 16 cm, control the row spacing and finalize the seedlings at the right time. Surplus seedlings can be used for transplanting, because the density of direct seeding is relatively high. If thinning is not done in time, it will seriously lead to insufficient growing space for perilla. The lower leaves of perilla decrease and air permeability declines, resulting in reduced yield. Therefore, thinning must be done well, and finally weeding should be carried out twice before the seedlings close the rows.
2. Timely Topdressing
The growth cycle of perilla is relatively short, and it can generally be harvested about two months after transplanting. The whole perilla plant can be used as medicine, so when fertilizing we mainly use nitrogen fertilizer. When the seedlings grow to about 30 cm, topdressing can begin. The first application is mainly farmyard manure, combined with an appropriate amount of compound fertilizer. When fertilizing, bury the fertilizer into the soil to improve fertilizer utilization. Then carry out the second topdressing before the rows close. When topdressing, pay attention to the amount to prevent excessive vegetative growth and fertilizer damage, and it must not touch the leaves or roots, so as to avoid hindering the growth of perilla.
3. Temperature Control
Perilla generally likes to grow in a warm environment. When the soil temperature rises to about 5°C, the seeds can germinate. However, 20-22°C is the optimal temperature for seed germination. Although the seedlings have a relatively strong tolerance to low temperatures, their growth rate will be inhibited. Therefore, perilla has relatively strong growth capacity in summer. After perilla enters the flowering stage, the temperature should be controlled at about 25°C and the humidity kept at about 78%. If it is too dry, it can easily cause the stems and leaves of perilla to become coarse, increase fibrous substances, and reduce quality.
4. Reasonable Watering
Water is an indispensable substance in the growth process of perilla. During perilla cultivation, the soil should be kept alternately dry and wet. If long periods of drought and water shortage occur during the seedling stage, then watering should be done in time; otherwise, the growth capacity of perilla will decline, and in severe cases it may dry up and die. However, water should not be excessive either. If there is too much water, it can easily cause root rot in perilla and trigger various diseases and pests, which likewise affects the growth of perilla. Therefore, in the rainy season, drainage should be done in time to avoid water accumulation in the field.
The above is a brief introduction to the key points for field management of perilla. When planting, we must do a good job in field management so as to ensure the growth of perilla and improve cultivation benefits. That is all for today's introduction. This article is for reference only. Thank you all for reading and supporting.