Purple potato is suitable for planting in the soil with good air permeability, loose soil and deep soil layer. Purple potato is the underground stem of plants and belongs to root tuber crops. Deep tillage is generally selected for planting purple potato. On the one hand, it can improve the soil. On the other hand, the soil with purple potato is relatively loose, which will also be suitable for planting new purple potato. The depth of cultivated land is generally 30 cm. Ridge planting in a good soil environment is most suitable for the growth of purple potato. 1、 What kind of soil is better for planting purple potato 1. Air permeability: the soil with good air permeability should be selected for planting purple potato. The soil with good air permeability can provide the oxygen needed for sweet potato and meet the basic growth needs. The soil with poor air permeability will lead to poor development of purple potato and reduce the yield of purple potato.
2. Loose soil: loose soil is conducive to the entry of oxygen, which is not only conducive to the growth of plant roots, but also conducive to the maintenance of water. It is also conducive to the photosynthesis of purple potato and accelerate the growth rate of purple potato.
3. Deep soil layer: the deep soil layer is suitable for planting deep-rooted crops. Purple potato is a crop with deep roots, so it is suitable for planting in the deep soil layer. 2、 How to plant purple potato 1. Fertilization: purple potato is suitable for growing in an environment of 23 ℃. It should be planted in a warm and clean environment. After land preparation, fertilization should be carried out, mainly with rotten farmyard fertilizer. After applying base fertilizer, it should be ploughed together with the soil.
2. Sowing: pay attention to the spacing when sowing. The spacing should not be too small, otherwise it will hinder the growth of purple potatoes and affect their absorption of water and fertilizer. Choose seeds with slender body, smooth appearance and few roots.
3. Management: topdressing should be carried out regularly to provide nutrition for purple potato. We should strengthen the control of pests and diseases, and enhance the resistance of purple sweet potato to pests and diseases, so that the incidence rate can be effectively reduced. We should also pay attention to weeding to prevent them from competing with purple potatoes for nutrition. （ChongZiShuYongShenMeTuBiJiaoHao）