What are the key points of comfrey cultivation and management? Explained in one article
Comfrey is a herbaceous plant in the Boraginaceae family, with plants about 1 m tall. It is a very common wild grass and also a traditional Chinese medicinal herb we often use. Comfrey has effects such as cooling blood and activating blood circulation, clearing heat and detoxifying, and is mainly used to treat diseases such as vaginitis and hepatitis, with relatively obvious preventive and therapeutic effects. Now comfrey also has a certain cultivated area, so how should it be managed when cultivating comfrey? Below, the editor brings you the key points of comfrey cultivation and management. Let's take a look!
1. Intertillage and weeding
Whether using seedling transplanting or direct seeding, when the seedlings grow to about 5 cm, intertillage and weeding should be done well to improve soil aeration and prevent soil compaction. Avoid excessive weeds competing for the growth nutrients of comfrey seedlings, and ensure there are no weeds in the field. However, during intertillage, do not go too deep, to prevent damaging the seedling roots and affecting comfrey's nutrient absorption. Usually, the number of weeding and intertillage operations per year must not be less than 3 times. Then in winter, earthing up should be done well to prevent lodging and improve comfrey's cold resistance.
2. Thinning and final singling of seedlings
Thinning and final singling of seedlings are very important for the growth of comfrey, ensuring that each seedling has sufficient growth space and promoting robust seedling growth. When carrying out the first intertillage, it needs to be combined with thinning. Control the plant spacing at about 5-6 cm, following the principle of keeping the strong and removing the weak. Then when the seedlings grow to about 16 m, carry out final singling in time, and the plant spacing must not be less than 8 cm.
3. Water management
Comfrey has a relatively large demand for water, and during its cultivation process, water has a great influence on the growth of comfrey. In dry seasons such as spring and summer, water in time to promote water absorption by the seedlings and prevent the seedlings from wilting due to lack of water. However, comfrey's water demand will gradually decrease as its growth age increases. After maturity, water less or even do not water, and in rainy days, pay attention to drainage work to prevent waterlogging damage to comfrey.
4. Proper topdressing
Nutrition is also an indispensable substance for the growth of comfrey, and topdressing is needed in time after each intertillage and weeding. According to the different growth stages of comfrey, control the amount and nutrient ratio. For example, at the seedling stage, the fertilizer should be mainly nitrogen fertilizer, mainly phosphorus and potassium fertilizer. When the seedlings grow to about 32 cm, apply decomposed farmyard manure, based on 2000 kg/mu, and appropriately increase the topdressing amount as the growth years increase.
5. Timely bud removal
Because comfrey flowers do not have much utilization value and also consume excessive nutrients. Therefore, during the budding stage of comfrey, we should pay attention to removing the flower buds in time to prevent excessive nutrient consumption, concentrate nutrients in the roots of comfrey, promote root growth, and improve root quality and yield. This is especially true for mature plants. Mature plants have greater nutrient demand, and flowering requires even more influence, so bud removal work is very important.
The above is a brief introduction to the key points of comfrey cultivation and management. The cultivation of comfrey is actually relatively simple, but management work is still very important. Therefore, everyone must pay attention to doing some basic work well to ensure the healthy growth of comfrey. That is all for today's introduction. This article is for reference only, and I hope it can help everyone!