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In recent years, with the increasing demand for medicinal herbs in the market, many herbs have entered the artificial cultivation field. However, due to the prominent nutritional laws and characteristics of Chinese herbal medicines, people's research on their fertilization techniques is rare, making the current use of Chinese herbal medicine on the application of two kinds of bias, one that does not require fertilization of wild-type Chinese herbal medicines, in particular, can not apply chemical fertilizers, at most Organic fertilizer. The second is the method of fertilizing the field crops, stimulating the production of large fields and large fertilizers without scientifically fertilizing the characteristics of Chinese herbs. Both of these conditions are unfavorable for the production of medicinal herbs and the improvement of medicinal efficacy.
In recent years, investigations in Hebei Province and parts of Henan Province have shown that the local management of Chinese herbal medicine fertilization is mainly based on organic fertilizers and fertilization by experience. It is not possible to apply advanced techniques such as soil testing and fertilization and medical plant nutrient diagnosis in fertilization decisions. technology. Generally in the fertilization method, the top dressing is not top dressing. Most of the base fertilizer is used in the fall, and a small part is used in the spring. The base fertilizer is organic fertilizer, and the top-dressing organic fertilizer is decomposed, such as cake fertilizer (bean cake, sesame cake) and human waste.
Chinese herbal medicine fertilization should not only consider how to increase the yield of medicinal materials, but should also focus on improving the efficacy of Chinese herbal medicines. As for how to apply the principle of balanced fertilization to the fertilization of Chinese herbal medicine, we must first see that there are many kinds of Chinese herbal medicines. For Chinese herbal medicines with different medicinal organs, in order to obtain a higher amount of herbs and sufficient efficacy, it must be directed to medicinal purposes. Organ characteristics differ in fertilization.
Chinese herbal medicine should be applied with appropriate amounts of chemical fertilizers on the basis of organic fertilizers. The combination of the two can help increase the overall output and efficacy. In recent years, some studies have shown that the use of organic fertilizer alone is not entirely suitable for various medicinal plants, such as human urine used in ginseng and American ginseng is easy to inhibit the development of fibrous roots; the effect of all organic fertilizer applied to the jaundice is not as good as the application of special compound fertilizer The effect is good.
The principle of application of chemical fertilizers based on the application of organic fertilizers is: prudent application of chemical nitrogen fertilizers, emphasis on the application of chemical phosphorus and potassium fertilizers, and skillful application of trace element fertilizers. For example, Chinese herbal medicine plants with flowers and fruits as medicinal organs should pay attention to the combination of phosphorus and potassium fertilizers; Chinese herbal medicine plants with roots and bulbs as medicinal organs should pay special attention to the application of potash fertilizer. For the fertilization of various Chinese herbal medicines, the use of chemical nitrogen fertilizer should be particularly cautious. Excessive nitrogen application may lead to reduced potency or lengthy and rotten roots.
Since Chinese herbal medicine plants need to obtain appropriate amounts of medicinal materials and ensure that they have higher efficacy, according to modern medicinal chemistry studies, most of the active ingredients that act as drugs are some of the secondary metabolites in the body, for the production of these ingredients. Out and effect, in the supply of fertilizer not only to ensure a large number of elements, but also the participation of trace elements. However, when trace amounts of trace element fertilizers are used through the soil, they must be blended with a large amount of organic fertilizer before they can be applied uniformly. When the trace element fertilizer is sprayed directly, it is necessary to grasp the appropriate concentration of the fertilizer solution and the number of times of use so that the expected effect can be obtained.
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