Partial application of nitrogen fertilizer
When the sweet potato is growing, don't apply nitrogen fertilizer on the side, otherwise the sweet potato will grow white, and many people need to turn over the vines because the vines grow white, which will lead to the vines turning over and over, thus affecting the growth of the sweet potato. Then how can we use nitrogen fertilizer skillfully when planting sweet potatoes?
Generally speaking, nitrogen fertilizer is rarely used for sweet potatoes planted in spring, but for sweet potatoes in sandy soil, some nitrogen fertilizer can be supplemented appropriately. This is because nutrients in sandy soil are easily lost, resulting in less soil fertilizer. When planting sweet potato in sandy soil, water is not easy to store, which leads to slow growth of sweet potato. Although sweet potato vines grow too fast, sweet potatoes grow less. However, if the vines are not long, there will be few sweet potatoes. Therefore, in this case, some nitrogen fertilizers should be applied appropriately when supplementing phosphorus and potassium fertilizers, and the best ratio is 1: 1: 1. Also, for sweet potatoes in summer, a small amount of nitrogen fertilizer can be supplemented appropriately, which can also promote the growth of vines. Because the sweet potato vines planted in summer grow slowly, nitrogen, phosphorus and potassium fertilizers can be applied after the vines grow vigorously, which can promote the growth.
Don't use chicken manure
Sweet potatoes like decomposed feces, because decomposed feces can make sweet potatoes grow sweeter, and it is big and smooth, because decomposed feces can loosen the soil. But when applying decomposed manure to sweet potatoes, chicken manure must not be used. Why?
Raw chicken manure is easy to burn seedlings, so it must not be used when fertilizing sweet potatoes. There are other manure that is not decomposed and cannot be used to prevent the fertilizer from burning its roots. Don't use rotten chicken manure, because maggots are easy to appear in chicken manure, and sweet potatoes are most afraid of maggots. Once maggots appear, there will be many bug eyes on the epidermis of sweet potatoes. Thus affecting the appearance and taste of sweet potatoes. If you want to use decomposed chicken manure, you must go through high temperature disinfection and repeated decomposition before you can use it.
Do not use chlorine-containing fertilizers.
Sweet potatoes are most afraid of chlorine-containing fertilizers, because potato crops such as sweet potatoes and potatoes are most afraid of chlorine-containing fertilizers. Once used, yellow leaves will appear, causing sweet potatoes to wither and die. Therefore, chlorine-containing fertilizers, such as potassium chloride, should not be used.
What fertilizer can be used to make sweet potatoes grow more and better?
Sweet potato is a kind of crop that likes farmyard manure, potassium fertilizer and calcium fertilizer, and also likes plant ash, so there is a folk saying that "a nest of sweet potatoes has a handful of ashes, and sweet potatoes produce a lot". Plant ash contains potassium, which sweet potatoes like very much, and plant ash contains various trace elements, which are beneficial to the growth of sweet potatoes, loosen the soil, help the expansion of sweet potatoes, and make the surface of sweet potatoes smooth. Plant ash can be used for fertilization, because the nutrients in plant ash are soluble in water.
In addition to plant ash, we can also use farmyard manure or decomposed manure as base fertilizer when planting sweet potatoes, but don't use decomposed chicken manure. Sister Rong also said that nitrogen, phosphorus and potassium fertilizer can be used when fertilizing, which can promote the growth of sweet potatoes and promote the growth of sweet potatoes.
Conclusion: Sweet potato is a delicious food that people like very much. When we plant sweet potato, we should not apply nitrogen fertilizer to prevent it from growing branches and vines in vain. Do not use chicken manure to prevent sweet potatoes from being bitten by maggots. Do not use chlorine-containing fertilizers to prevent the yellow leaves of sweet potatoes from dying. When we plant sweet potatoes, as long as we avoid these three points and apply fertilizer reasonably, we can make sweet potatoes grow more and bigger.