Method for controlling ambrosia trifida by using rust fungus

Abstract

The invention relates to a method for controlling ambrosia trifida by using rust fungus. According to the invention, ambrosia trifida seeds are soaked by using concentrated sulfuric acid, and are soaked by using gibberellins; the seeds are sowed in a sunlight greenhouse; when 4-6 pairs of leaves are grown, the ambrosia trifida is preserved for later use; dried ambrosia trifida leaves with teliospores are crushed by using a small crusher, such that teliospore coarse powder is obtained; the teliospore coarse powder is added into a water solution, xylose or lactose, such that a teliospore suspension liquid is prepared; the prepared teliospore suspension liquid is added into a small sprayer, and is uniformly shaken and uniformly sprayed on the leaves of the ambrosia trifida seedlings; in 7-15 days after inoculation, ambrosia trifida leaves are attacked; the teliospores are brushed off by using a stiff brush, and are prepared into a teliospore suspension liquid; water is added into the teliospore suspension liquid according to a certain ratio, and the solution is sprayed on the leaves of ambrosia trifida by using a small sprayer. The method provided by the invention has the advantages of simple operation, low cost, no residue, no pollution, no infection on other crops, and environment safety.

Description

technical field [0001] The invention belongs to the field of biological control, in particular to a method for preventing and treating ragweed trifida by using rust fungus, and in particular to methods for strain preservation, strain rejuvenation, strain collection and inoculation of ragweed trifida rust fungus. Background technique [0002] Ambrosia trifida is recognized as a dangerous weed in the world. It has the characteristics of rapid growth, strong competitiveness, strong adaptability, multiple transmission routes, and large reproduction coefficient. Once it invades farmland, it will quickly form a dominant community. Ambrosia pollen is the main cause of diseases such as allergic rhinitis and bronchial asthma. Patients experience symptoms such as itchy eyes, ears and nose, headache, chest tightness, cough and asthma, and can also cause concurrent emphysema, pulmonary heartache and other diseases. . [0003] Ambrosia harms dryland crops such as alfalfa, grass, and soy...

AI Technical Summary

Problems solved by technology

It is very laborious to pull out by manpower, so often use a knife to cut, and wear protective gloves at the same time, so the workload is very heavy

In addition, the use of chemicals has great limitations, because some ragweed is scattered among other crops. Large-scale use of chemicals is not only costly, but also easily causes harm to other crops and causes environmental pollution.

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