Method for applying trichoderma harzianum to vegetable hydroponics

Abstract

The invention discloses a method for applying trichoderma harzianum to vegetable hydroponics; the method comprises the following steps: selecting vegetable seeds and germinating the vegetable seeds in a culture dish under appropriate conditions; selecting vegetable seedlings which grow healthily and have a consistent size, transferring the vegetable seedlings to a planting basket first, and then transferring to a hydroponic pipeline filled with nutrient solution or a perforated foam plastic plate in a hydroponic groove for hydroponics; after the transplanted vegetable seedlings adapt for two days in the hydroponic nutrient solution, adding the trichoderma harzianum and then enabling each group of hydroponic vegetables to grow continuously, and supplementing the nutrient solution at regular intervals. The trichoderma harzianum of different concentrations all have certain growth promoting effects on hydroponic lettuce; the trichoderma harzianum with the usage amount about 0.3g.L<-1> to 0.4g.L<-1> can promote the growth rate of lettuce fresh weight to be up to 110% or more; the hydroponic lettuce added with the trichoderma harzianum does not show symptoms of disease, which indicates that the trichoderma harzianum has a certain preventive effect to root rot of the plant.

Description

technical field [0001] The invention belongs to the technical field of hydroponic vegetables, and in particular relates to a method for applying Trichoderma harzianum to vegetable hydroponic cultivation. Background technique [0002] Since 1932, Weinding found that Trichoderma lignoderma suggested that the fungus be used for the biological control of soil-borne plant diseases, and the research on Trichoderma biocontrol began from then on. With the development of biotechnology, Trichoderma has been isolated and screened from nature alone to the extent that it has been purposefully modified by biotechnology to obtain new strains. In existing studies, Trichoderma can effectively control diseases in biological control and reduce the pollution caused by chemical agents. At the same time, in addition to treating diseases, Trichoderma also has a certain impact on plant growth. Li Shigui et al. found that the activity of soil catalase was improved after the application of the mold,...

AI Technical Summary

Problems solved by technology

[0003] Today's vegetable cultivation tends to be intensive, and hydroponic vegetables are being used more and more widely. However, due to the characteristics of its own ecosystem, once pathogenic bacteria invade the system, it will be more difficult to control the mass reproduction.

Traditional chemical methods not only have hidden dangers of pollution, but also require long-term continuous investment, the control effect is not very satisfactory, and the operation requirements are relatively high

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