Anti-freezing and disease-prevention film agent for trees, and preparation method and application thereof

Abstract

The invention discloses an anti-freezing and disease-prevention film agent for trees, and a preparation method and application thereof. The anti-freezing and disease-prevention film agent is composed of a main material and water, wherein the main material is prepared from the following ingredients in part by weight: 200-1100 parts of film-forming substances a or b, 1-100 parts of 2-methyl-4-isothiazolin-3-ketone, 0.033-3.3 parts of 5-chlorine-2-methyl-4-isothiazolin-3-ketone, 10-80 parts of dimethyl sulfoxide and 10-80 parts of glycol; the film-forming substance a is chitosan, and the film-forming substance b is chitosan and carboxymethylcellulose. The anti-freezing and disease-prevention film agent has good prevention effect on freezing injuries caused by low temperature, air and ice nucleating bacteria, and can be used for preventing stems and twigs of young poplars, hybrid filbert trees and apple trees from frost damages and overwintering coldness, preventing apricot trees and pear trees after flowering in early spring from late spring coldness, preventing skin ulcerative disease and canker and realizing wound surface protection after scab scraping.

Description

[0001] This application is a divisional application with the application number 201210574595.2, the application date is December 26, 2012, and the invention name is "antifreeze and disease prevention film agent for trees and its preparation method and application". technical field [0002] The present invention relates to an antifreeze and disease-preventing film agent for trees and its preparation method and application, in particular to the prevention of tree stems, branches, flowers, and jelly damage, and the prevention and treatment of canker and skin rot. . Background technique [0003] In northern my country, fast-growing poplars such as black poplars and hybrids of black poplars and green poplars have gradually replaced native poplars as the main planting species. However, in Liaoning, Jilin, Heilongjiang, Inner Mongolia, and parts of Hebei, young fast-growing poplar trees often suffer from overwintering damage such as freezing damage and die in special years, and eve...

AI Technical Summary

Problems solved by technology

[0007] Trees are damaged by overwintering and dry up or die, which is the result of the combined effects of low temperature, wind, ice nuclei bacteria, canker and skin rot bacteria. , Anti-freeze, anti-water loss function, the disadvantage is that the membrane has poor waterproof performance, short protection time, no antibacterial and bactericidal effect or only works on bacteria or fungi, and cannot achieve comprehensive control effect

Because there is no antifreeze and disease prevention agent suitable for trees at present, trees such as poplar, hazelnut, and apricot have extensive overwintering damage and frozen flowers and fruit problems, including canker and skin rot induced by freezing damage, which is harmful to forestry and fruit trees. severe loss of production

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