Common sweet potato malformation roots are: large end of small tail, burdock root, potato block cracks, hard roots, which grow like a "red blood" and so on, these phenomena have seriously affected the value of sweet potato products, today we will introduce The method of preventing and treating sweet potato block malformation.
1. Soil selection. Although sweet potato is not strict with soil requirements, it is better to choose sandy loam with loose topsoil, good drainage, rich organic matter, deep soil, and loam. Too much sandy soil should be supplemented with organic fertilizers and clay to improve the soil. The clay soil with heavy soil has strong water retention but is not conducive to the formation and expansion of roots.
2, a reasonable fertilization. Potassium fertilizer needs the largest amount of life in sweet potato, followed by nitrogen fertilizer and phosphorus fertilizer. The demand of nitrogen fertilizer is mainly concentrated in the pre-ridge, in the potato stage should not be excessive nitrogen fertilizer, if the available nitrogen content in the soil is too high, the juvenile root column aging cells form fiber roots, it is difficult to expand into roots. Therefore, we must pay attention to early diarrhea, heavy potassium later.
3, strengthen water management. Some teratogenic potatoes are caused by improper soil moisture, and some sweet potato roots are cracked during the process of swelling, which is often caused by watering or raining after drought.
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