Sterilization method of soilless culture medium

Abstract

The invention provides a sterilization method of soilless culture medium. The sterilization method includes spraying micro-nano bubbled ozone water with 8-10mg / L to the soilless culture medium to achieve sterilization. The sterilization method used to sterilize the soilless culture medium by ozone sterilization technology and micro-nano bubble technology belongs to the field of protected horticulture. An ozone generator is used to generate ozone, a micro-nano bubble generating device is used to quickly dissolve the ozone in water to obtain high concentration micro-nano bubbled ozone water, the medium is sprayed before crop planting to kill harmful pathogenic bacteria in the medium, and accordingly medium sterilization and soil-borne disease control are achieved. By the sterilization method, the soilless culture medium can be sterilized effectively, soil-borne diseases can be controlled effectively, and no pesticide residue appears.

Description

technical field [0001] The invention belongs to the technical field of substrate disinfection, and in particular relates to a method for disinfecting soilless culture substrates. Background technique [0002] The substrate provides the necessary growth environment for plant roots, but it is also the medium and breeding ground for the spread of diseases and insect pests. After a crop is cultivated in a soilless culture medium, pathogenic bacteria and insect eggs will accumulate, which will affect the growth of subsequent crops. On the one hand, after continuous cropping, self-toxic products increase and resistance decreases, which intensifies the spread of germs; on the other hand, the substrate itself is harmful to insects and weed seeds, reducing crop yield and quality. [0003] In order to prevent pests and diseases and reduce costs, after each crop is harvested, the substrate must be disinfected for the next use. In order to safely reuse the substrate, scientific disinf...

AI Technical Summary

Problems solved by technology

[0005] The disadvantage of the physical disinfection method is that it consumes a lot of energy, while the chemical disinfection method pollutes the environment due to the use of chemical agents for disinfection, and has toxic and side effects on the operators.