Method for controlling and preventing intrusion of fragrant eupatorium herb

Abstract

The invention aims to provide a method for controlling and preventing intrusion of a fragrant eupatorium herb. The method has the advantages of low cost, low soil pollution and destruction high economic value and long-term effect and is convenient to operate. The intrusion of the fragrant eupatorium herb is prevented and suppressed by planting a local vitex negundo linn plant capable of competing with the fragrant eupatorium herb in an abandoned farmland, mountainous brushwood or other vacant land where the fragrant eupatorium herb is easily grown or has been grown. The vitex negundo linn planted in the ecological system has medicinal value, is an important honey-derived plant, and also has the effects of holding water and soil and greening landscapes.

Description

technical field [0001] The invention relates to a method for preventing and controlling the invasion and spread of alien plant species, especially a method for controlling and preventing the invasion of airplane grass. Background technique [0002] Airplane grass is a perennial clustered herb or subshrub, 1-7m high; the stem is erect, the branches are extended; the leaves are opposite, ovate-triangular, 4-10cm long, 1.5-5cm wide, with obvious base three veins, two sides Rough, covered with pilose and reddish-brown glandular spots, with pungent smell; inflorescences are born at the top of branches and stems, arranged in corymbs, and the diameter of the inflorescence is usually 3-6cm; the involucre is cylindrical, 1cm long, 4-5mm wide, containing about 24 florets; involucral bracts 3-4 layers, imbricate arrangement, outer bracts ovate, middle and inner bracts oblong; corolla tubular, light yellow, stigma pink ; Achenes dark brown, 4mm long, 5-sided, with white pappus and coar...

AI Technical Summary

Problems solved by technology

[0005] 1) Secrete allelochemicals, crowd out native plants, make pastures useless, and affect tree growth and regeneration

(2) Affect the growth of food crops, mulberry trees, peppers, bananas, etc., and reduce production

(3) Blocking the canals and obstructing traffic

(4) Leading to the loss of living environment for wild precious Chinese medicinal materials

(5) The leaves are poisonous, containing toxic chemicals of coumarins, which can cause skin inflammation and allergic diseases in humans, and eating young leaves by mistake can cause dizziness, vomiting, and poisoning of livestock, poultry and fish

The chemical control method can see the effect in a short time, but the chemical composition of the herbicide will also remain in the soil, causing the soil to be polluted and destroyed, and can only achieve a short-term control effect;

[0010] 3) Biological control refers to the release of specialized natural enemies, such as insects and bacteria, for long-term control of harmful organisms, but the cost is high, the control time is long, and risk assessment and adaptability evaluation of the introduced natural enemies are required