Application of ginseng soil testing and fertilizer application
Ginseng is a very expensive medicinal material. When growing ginseng, it needs to pay special attention to changes in soil nutrients and fertility. Therefore, the ginseng's soil testing and fertilization is particularly important. After the soil testing and fertilizer applicator analyzes the fertility in the soil, the time, quantity, and type of fertilization are reasonably determined.
1, ginseng fertilizer law and bed soil properties
There are various methods of measuring soil fertilization to determine the amount of economic and rational fertilizer, such as the target yield method (also known as the nutrient average method), fertilizer effect function method, local grading method, nutrient abundance index method, etc. Each method has a specific calculation method Or different levels of indicators can be divided by the calculation results.
2, ginseng sucking fertilizer has its own characteristics, outstanding performance in the following aspects
Ginseng has strong dependence on bed soil fertility; ginseng has extremely low utilization rate of chemical fertilizers; ginseng sucking fertilizer has obvious phases, and there is a significant difference in the amount and intensity of fertilizer absorption in different fertility years and at different fertility stages; ginseng is both hi-fertility and non-fertility.
At present, the planted soil in Changbai Mountain is new forest soil, and the soil types are two major types: dark brown soil and white soil and soil.
3, ginseng planted after the bed soil has the following characteristics
High nutrient storage (mainly high soil organic matter content), but poor efficiency; bed soil nutrients ratio is not reasonable, it is difficult to meet the needs of high yield and high quality of ginseng; soil heterogeneity is large (because of the effect of soil parent material, topography, vegetation type, etc.) Mainly in the soil acidity, harmful ingredient activity, soil structure and other physical and chemical characteristics vary greatly); due to the ginseng's own fat absorption law and bed soil characteristics show that the ginseng-soil-fertilizer relationship is very complex, only the establishment of testing The soil fertilization technology system can objectively grasp the ginseng-soil-fertilizer relationship.
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