What are the latest methods for managing Chinese chives after autumn
After the Start of Autumn, autumn truly begins. Temperatures start to drop somewhat, the weather is relatively pleasant, and the temperature difference between day and night begins to widen. This is actually beneficial to the growth of Chinese chives, but many issues also need attention, such as the problem of adapting to temperature changes. There are also some other management issues. How to manage the growth of Chinese chives well after autumn is what we will introduce today.
1. Fertilizer and water management
At this time the vegetables grow rapidly and need a large amount of nutrients, so topdressing is required. Apply about 100 jin of compost per mu, about 1500 jin of farmyard manure, and 50 jin of compound fertilizer. Use them together, and water to maintain the normal soil solution concentration. Do not water during the Cold Dew period, mainly to accumulate nutrients. At the Start of Winter, the withered Chinese chives need to be cut off, and 40 jin of urea per mu should be applied together with watering.
2. Darkening treatment
At the Start of Winter, remove all dead leaves and weeds. After watering and fertilizing, darkening treatment is needed. Build a small arched shed. In addition to plastic film, also cover it with straw curtains. Then uncover the straw curtains at 9 o'clock every day and cover them again at 2 p.m. Reduce the light exposure time every day, to only about five hours of light. After a week, the film can be removed when sprouting occurs. Earth up the soil, and when it grows to several dozen cm it can be cut and harvested.
3. Controlling growth and inducing dormancy
After Cold Dew, do not water or topdress, accumulate nutrients, and control growth. After Frost's Descent, set up a windbreak in front of the south side, tilted toward the north, with a height of more than one meter. This is mainly to lower the temperature and then promote the Chinese chives to enter dormancy. It is also a measure to reduce nutrient consumption. After covering in winter, tilt the windbreak somewhat toward the south and begin to keep warm.
4. Pest and disease control
The main disease to prevent is root rot. After high temperatures and then rain, water-soaked diseased areas easily appear at the base of the stem, and it will slowly wither and die. Use a 500-fold solution of 50% metalaxyl-copper wettable powder to drench the roots; spraying treatment is not very effective. In autumn, the main pest to control is the stem borer, which mainly bores into and feeds on the false stem. Use pyrethroid-type drugs and spray once a week, or treat with other drugs.
After autumn, Chinese chives mainly require some special management according to their growth, such as darkening, controlling, and inducing dormancy. These are all for nutrient accumulation and management of the growth situation.