Cadmium-reducing base material for ligusticum wallichii planting as well as fertilizer and application of cadmium-reducing base material

Abstract

The invention provides a cadmium-reducing base material for ligusticum wallichii planting, a fertilizer and application of the base material. The base material comprises an organic fertilizer obtained through kitchen waste treatment, a calcium magnesium phosphate fertilizer and biological bacteria, the organic fertilizer obtained through kitchen waste treatment contains organic matter and humic acid, and the biological bacteria comprise bacillus laterosporus and bacillus subtilis. The organic fertilizer and the calcium magnesium phosphate fertilizer are used for improving the physical and chemical properties of soil and reducing the effectiveness of soil cadmium so as to reduce the cadmium adsorption of ligusticum wallichii; and two biological bacteria, namely bacillus laterosporus and bacillus subtilis, are combined and can be used in two ways, root promotion and cadmium reduction are realized, and synergistic interaction is realized. The fertilizer comprises the following components in parts by weight: 10-22 parts of zinc sulfate, 18-22 parts of sodium silicate and 400-650 parts of a base material for cadmium reduction in ligusticum wallichii planting. Zinc sulfate and cadmium in the fertilizer have antagonism, so that the cadmium adsorption of ligusticum wallichii can be reduced. Sodium silicate and cadmium form insoluble cadmium silicate, so that the effectiveness of cadmium can be reduced, and meanwhile, the cell wall of ligusticum wallichii is strengthened to improve the resistance to various diseases.

Description

technical field [0001] The invention relates to the field of soil fertilizers, in particular to a cadmium-reducing base material for planting Rhizoma Chuanxiong, fertilizer and application thereof. Background technique [0002] Ligusticum Chuanxiong is a commonly used Chinese herbal medicine. It is often used to promote blood circulation, expel wind and relieve pain. It is pungent, warm, fragrant and dry. It is a cultivated plant, mainly produced in Sichuan (Pengzhou), and grows in mild climates in Yunnan, Guizhou, Guangxi and other places. Due to the high content of cadmium in the soil environment in some parts of Southwest China, and the fact that Rhizoma Chuanxiong plants have a certain enrichment effect on cadmium elements, the double impact has led to the current excessive cadmium content in rhizomes of Rhizoma Chuanxiong, which has seriously affected its circulation in the market, and even affected the The development of my country's traditional Chinese medicine indust...

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Problems solved by technology

For example, the main function of traditional bio-organic fertilizers is to improve soil, increase organic matter, increase soil beneficial bacteria, and increase crop disease resistance. It cannot reduce the availability of heavy metals and reduce the adsorption of cadmium by Rhizoma Chuanxiong, so it cannot fundamentally change the cadmium content of Rhizoma Chuanxiong. The problem of exceeding the standard; in addition, the current bio-organic fertilizers have no targeted development for reducing cadmium in Rhizoma Chuanxiong. Different species of plants have differences in rhizome germination and root development, and have different resistance to pathogens, so they are suitable for green peppers. , cucumber, grape, Codonopsis pilosula, wolfberry, honeysuckle and other crops are not necessarily suitable for the cultivation of Chuanxiong

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