Potato on a wide range of soil adaptation, the most suitable potato growth are light loam soil. Since the growth of tubers in the soil, there is enough air, respiration can be carried out smoothly. More fertile light loam also non-stick heavy, good air permeability, is not only beneficial to the growth of tubers and roots, but also have increased the role of starch content. Potato plant with this type of soil is generally quick germination, emergence and tidy, smooth epidermal growth tubers, potato-shaped normal, and easy to harvest. Visco-heavy potato plant soil, preferably for high ridge cultivation. Such bad soil aeration, flat-planted or small ridge cultivation, often due to poor drainage caused by the late rotten potato. Viscous heavy soil compaction easy, tuber growth often deformed or irregular-shaped tubers. However, this type of soil as long as the drainage patency, and its soil water, fertilizer and strong security, tend to yield high potato plant. This type of soil management, master row, weeding and the earth's moisture is very important, once hardened soil compaction, field management is very convenient, especially in difficult earth, such as exposed will affect the quality of tubers. This type of soil produced potato tuber starch content generally low. Sand soil of a large potato plant should pay particular attention to Increasing fertilizer. Because this type of soil water, fertility of the worst security. Deep-sowing plant should be appropriate, because once the rain put a little larger than the sand washed away, it is easy to show stolon and tubers, potato is not conducive to growth, but increased management difficulties. Sand in the growth of potato, tubers particularly clean, smooth skin, potato-shaped normal, high starch content, easy to harvest. Potato acid soils are more hi crop, soil hydrogen ion concentration of 100 ~ 1580 M. / L (PH4.8 ~ 7.0) have more normal growth of potato. Hydrogen ion concentration of 897.1 ~ 2305.2 M. / L (PH5.64 ~ 6.05) when there is increasing trend of tuber starch content, but the hydrogen ion concentration at 15,850 M. / liter (PH4.8 below) when the soil near acid plant phyllochroma变淡show premature aging, reduced; hydrogen ion concentration at 100 M. / or the following (PH7.0) above is not an overwhelming majority of alkali-resistant varieties yield significantly reduced; soil hydrogen ion concentration of 15.58 M. / L the following (PH7.8 above) not suitable for potato cultivation. In such soil on potato plant is not only a low yield and is not alkali-resistant varieties after sowing bud tubers should not grow or even death. Another high content of calcareous soil potato plant, prone to scab. Because this type of soil actinomycetes are particularly active, often love potato tuber epidermal serious damage. When this happens, therefore, should use resistant varieties and use of acid fertilizers. |