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...

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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; Pe

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