What are the key field management points for water chestnut (Eleocharis dulcis)?
The cultivation areas of water chestnut are mainly concentrated in the tropical provinces of our country. It can not only be eaten as a fruit, but can also be stir-fried and eaten, and it also has certain medicinal effects, as it can promote gastrointestinal peristalsis. Below is an introduction to the key field management points for water chestnut (Eleocharis dulcis)!
1. Management during the seedling stage
The period from after the water chestnut seeds emerge until before they begin tillering is its seedling stage. Water chestnut grows in water, so during its seedling stage the water level should be kept at about 4 cm. About half a month after planting, water chestnut enters the tillering stage. During this period, pay attention to observing the growth of the seedlings, promptly remove weeds and yellow stems and other substances that affect stem growth. These can be buried in the field to promote the growth of the planted water chestnut. Apply a topdressing of nitrogen fertilizer once, and control the amount well to prevent excessive application from causing fertilizer damage to the water chestnut.
2. Management during the vegetative stage
When water chestnut enters the tillering stage, focus on doing a good job of weeding. Each time you weed, try to do it together with topdressing, and the main fertilizer should also be nitrogen fertilizer. During the peak growth period of the corms, pay attention to raising the water level to about 7-8 cm. During the vegetative stage, the damage caused by pests and diseases to water chestnut is relatively serious, such as blight and stem borers. Corresponding control measures should also be taken according to the pests and diseases to enhance the growth ability of water chestnut and increase yield.
3. Field management
After water chestnut is transplanted and planted, the soil temperature should be appropriately raised to promote the revival and tillering of the water chestnut seedlings, and watering should be done appropriately. As the seedlings grow, the water consumption in the field will gradually increase, so the water level should be appropriately raised according to actual conditions to promote the growth of the aboveground part. After the rows close, the application of nitrogen fertilizer should be controlled. If there is too much nitrogen fertilizer, it is very easy to cause excessive growth of the water chestnut seedlings. From sowing to harvesting of water chestnut, there must be no water shortage, especially during the expansion period, because if there is a water shortage, it will have a great impact on yield.
4. Pest and disease control
The damage caused by pests and diseases to water chestnut is very serious, so pest and disease control is also a management task that must be given key attention. Common pests and diseases of water chestnut include fusarium wilt, sclerotinia disease and locusts. Management should be strengthened, and watering and fertilizing should be reasonable. While meeting the water and fertilizer needs of water chestnut, it is also necessary to avoid waterlogging and fertilizer damage, which increase the incidence of pests and diseases. It is necessary to understand the symptoms of each pest and disease so that after onset the specific pest or disease can be identified in time and corresponding control measures can be taken.
The above is a brief introduction by Tuliu.com to the key field management points for water chestnut. The management work for water chestnut is very important and must be taken seriously during cultivation in order to ensure planting benefits.