Clay has strong water and fertilizer conservation ability, and is rich in organic matter, but its air permeability is poor, and the ground temperature rises slowly in spring, which affects the seedling development in the early stage and the rhizome expansion in the later stage, and the final yield is not very high. When cultivated in cohesive soil, the rhizome texture is tender, but the water content is high.
Loam sand has moderate viscosity, is soft and breathable, retains water and fertilizer, and is beneficial to seedling growth and root development, so the yield of rhizomes is high, especially in heavy loam.
According to the analysis of the nutritional components of ginger roots produced in different soils, the content of soluble sugar, vitamin C and volatile oil in ginger produced in heavy loam is higher than that in sandy loam and light loam, but the dry matter content is lower. Soil quality has little effect on cellulose and starch content.
Ginger is sensitive to soil pH, and the strength of soil pH has obvious influence on the growth of ginger stems and leaves or underground rhizomes. Ginger likes neutral and slightly acidic reaction, but it has a wide range of adaptability to soil pH and grows well in the range of pH 5 ~ 7. Among them, rhizomes grow best at pH6. When the soil pH is greater than 8, the growth is obviously inhibited, which is characterized by short plants, yellow leaves and poor rhizome development. Therefore, we should pay attention to soil selection when planting ginger, and it is not suitable to plant ginger in saline-alkali waterlogged depression.
In a word, ginger should be planted on neutral, acidic and fertile loam, which has good yield, commodity characteristics and product quality.