Method for controlling ambrosia trifida by using rust fungus

Abstract

A method for preventing and treating ragweed trifida by using rust fungus, which is characterized in that the seeds of ragweed trifida are soaked in concentrated sulfuric acid and then soaked in gibberellin; Grow to 4-6 pairs of leaves, set aside; grind the dry ragweed trifida leaves with teliospores with a small pulverizer to obtain teliospore coarse powder; add teliospore coarse powder to aqueous solution, xylose or lactose to obtain Standby teliospore suspension; put the prepared teliospore suspension into a small sprayer, shake it up and spray it evenly on the leaves of Ambrosia trifida seedlings; after 7-15 days of inoculation, the leaves of Ambrosia trifida Onset, brush the teliospores with a hard brush to make a teliospore suspension; add water to the teliospore suspension according to the volume ratio, and spray the solution on the leaves of Ambrosia trifida with a small sprayer. The positive effects of the invention are simple operation, low cost, no residue, no pollution, no infecting other crops, and environmental 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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