Soil for rapidly cultivating pteris vittata, cultivating method and application

Abstract

The invention belongs to the technical field of agricultural planting and discloses a soil for rapidly cultivating pteris vittata, a cultivating method and application. The soil for rapidly cultivating pteris vittata is formed by mixing soil, humus and quartz sand according to the volume ratio of (2-3): (1-2): 1. According to the soil, calcium carbonate is added to improve soil alkalinity, the quartz sand is added to improve porosity, a proper amount of nitrogen-phosphorus-potassium fertilizer is supplemented, the optimal temperature and humidity are controlled, the soil for efficiently and rapidly cultivating and breeding pteris vittata and environmental condition parameters are created, the problems of long time consumption and low seedling rate of pteris vittata cultivation are solved, and the important soil is provided for obtaining high-quality strong seedlings. The cultivation method for batch production of pteris vittata is formed. Meanwhile, by means of the soil, the soil pH can be increased, the porosity can be increased, proper fertility can be kept, rapid germination of pteris vittata spores and healthy growth of seedlings can be promoted, the survival rate of the seedlings can be increased, the planting difficulty of pteris vittata and the time cost of preparation of phytoremediation materials can be reduced, and the environmental benefits and economic benefits of the phytoremediation technology can be improved.

Description

technical field [0001] The invention belongs to the technical field of agricultural planting, and in particular relates to a soil for rapid cultivation of centipede grass, a cultivation method and application thereof. Background technique [0002] At present, hyperaccumulator plants are limited to absorbing and accumulating metal elements higher than 1000 μg metal g -1 dw's plants. Centipede grass (Pteris vittata L.) belongs to Pteridaceae Pteridaceae and Pteris genus Pteris. It is widely distributed in Jiangnan provinces of China, and is also distributed in the north to Shaanxi, Gansu and southern Henan. It is mainly born on calcareous soil and limestone, and has relatively High ornamental, medicinal and environmental value. Centipede grass is the first reported arsenic hyperaccumulator plant in the world. It has a strong ability to resist arsenic and accumulate arsenic, and can enrich a large amount of arsenic in the shoot. In both indoor control experiments and field e...

AI Technical Summary

Problems solved by technology

[0007] (1) Ferns such as centipede grass have many spores and high reproduction coefficient, but the cultivation and growth cycle is long, and they are easily affected by environmental factors, and the seedling rate and reproduction efficiency are not ideal

[0008] (2) Conventional remediation methods for soil heavy metal pollution usually require expensive instruments and extremely high operating costs, and remediation of arsenic-contaminated soil requires a lot of cost

[0009] (3) Traditional restoration methods Physical restoration techniques include deep landfill and covering, and chemical restoration techniques use strong acids and complexing agents to clean the soil. These restoration techniques are high in cost, low in feasibility, bulky in repair products, and easily cause secondary pollution

[0010] (4) Physical and chemical methods can cause irreversible changes in soil properties, destroy soil biodiversity, and make soil unsuitable for plant growth

However, the phytoremediation material of arsenic-contaminated soil—Centipede grass has a long cultivation and growth cycle, and is easily affected by environmental factors. The seedling rate and reproductive efficiency are not ideal, which limits the wide use of this material.

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