Biological method for inhibiting rapid growth of mikania micrantha

Abstract

The invention belongs to the technical field of biological prevention and control, and discloses a biological method for inhibiting rapid growth of mikania micrantha, which comprises the following steps: measuring the safety of mikania micrantha puccinia peucedanum on non-target organisms; determining the mikania micrantha puccinia infection process; determining the phenotype of mikania micrantha growth inhibition by mikania micrantha puccinia Determining the inhibition of mikania micrantha hormone synthesis by mikania micrantha puccinia And determining the inhibition of mikania micrantha puccinia peucedanum on the photosynthesis of Through measurement of the net photosynthetic rate and the stomatal conductance of mikania micrantha leaves and content analysis of Kalvin cycle pathway related metabolites, it is found that after mikania micrantha puccinia is infected, the photosynthetic rate and the stomatal conductance of the leaves can be remarkably reduced, the content of Kalvin cycle pathway related compounds is inhibited, the net photosynthetic rate is reduced by 10.57%, and the content of Kalvin cycle pathway related metabolites is reduced by 10.57%. The stomatal conductance is reduced by 26.03%, and the content of Kalvin cycle pathway related compounds is reduced by 1.9-3.4 times.

Description

technical field [0001] The invention belongs to the technical field of biological prevention and control, and in particular relates to a biological method for inhibiting the rapid growth of Mikania micrantha. Background technique [0002] Currently, Mikania micrantha is an extremely fast-growing, trailing, perennial vine belonging to the Asteraceae family native to tropical America and listed as one of the 100 most invasive species by the International Union for Conservation of Nature (IUCN). It has been widely spread to more than 70 countries and regions in tropical Asia, and has become one of the most harmful weeds in tropical and subtropical regions of the world today. The invasion of Mikania micrantha has wreaked havoc on natural ecosystems and has caused severe economic losses associated with forest and crop production. It has wreaked havoc on natural ecosystems in tropical Asia, parts of Papua New Guinea, islands in the Indian and Pacific Oceans, and the US state of F...

AI Technical Summary

Problems solved by technology

[0003]The control methods of Mikania micrantha are traditional chemical control and manual control, and the traditional control methods have their own shortcomings: the disadvantage of manual control is that it requires a lot of labor and financial resources. The effect of the treatment is not long-lasting, and areas manually cleared of Mikania can be recolonized with Mikania within two weeks

[0007] (1) In the existing methods of inhibiting the growth of Mikania micrantha, manual / mechanical removal (extraction, brake cutting) is costly and laborious, and the specimen is refractory; The specificity of the herbicides is not strong, which poses a serious threat to biodiversity and the ecological environment

[0008] (2) The pesticide residues in the soil will gradually transfer to the plants through the root system activities of the plants, which will increase the pesticide residues in the plants and affect the quality of agricultural products. Decrease the economic benefits of farmers; Pesticides can affect the population and population of soil microorganisms, whether they are beneficial microorganisms or harmful microorganisms, are killed or inhibited growth

[0009](3) Residual pesticides in the soil can be absorbed by food and vegetable crops, making them polluted and endangering the health of humans and animals through the food chain; Drinking water enters human or animal body, causing direct or indirect harm to human health and affecting people's normal life

[0010] (4) Due to the biological characteristics of the natural enemy insects themselves, they cannot establish a stable population or have a limited range of activities, so the effect is not ideal; use the parasitic plant - dodder, but when dodder Mikania micrantha can grow and reproduce rapidly after death, and dodder will also cause serious harm to other plants. Not only can it not achieve the purpose of preventing and controlling Mikania micrantha, but also introduce new invasive species to cause greater harm

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