Atrazine-containing herbicide composition and application thereof

Abstract

The invention relates to an atrazine-containing herbicide composition. The herbicide composition comprises an active component, the active components comprise an active component A and an active component B, the active component A is atrazine, the active ingredient B is a compound with a structure as shown in a formula I and pharmaceutically acceptable salt thereof, and the mass ratio of the active component A to the active component B is 10: 1-80. Weeding effect experiments prove that when atrazine and the compound shown in the formula 1 are combined to serve as active components of herbicides for weeding, a synergistic gain effect is generated between the two herbicide active components. The herbicide composition can be used for preventing and removing barnyard grass, crab grass, quinoa,edible amaranth and other weeds in sorghum fields, but is very safe to sorghum, the use amount of atrazine can be reduced, residues in soil are reduced, and meanwhile, an excellent control effect ondigitaria sanguinalis which generates resistance to atrazine is achieved.

Description

technical field [0001] The invention belongs to the field of agricultural herbicides, and relates to a herbicide composition containing atrazine and its application. Background technique [0002] Sorghum has always been a pioneer crop in China's dryland farmland because of its characteristics of drought resistance, waterlogging resistance, salt-alkali resistance, and barrenness. It has many characteristics such as feed, brewing, and fiber, and occupies an important position in China's agricultural economy. In recent years, with the increasing trend of agricultural mechanization, scale and labor reduction, chemical weed control technology in sorghum fields will become an indispensable and important measure in sorghum production. However, sorghum belongs to the category of "small miscellaneous grains", and there are few special herbicides or registered varieties. [0003] At present, herbicides in sorghum fields are mainly soil sealants compounded with atrazine and amides. T...

AI Technical Summary

Problems solved by technology

Atrazine is the herbicide with the largest application area in sorghum fields. Long-term high-dose use causes harm to the environment and increases weed resistance

Atrazine can only be partially decomposed after 180 days in the natural environment. At the same time, atrazine has a strong leaching property and is easy to migrate downward in the soil and enter the groundwater, thereby causing groundwater pollution and having a great impact on the soil environment.

Moreover, due to the long-term use of atrazine, it has also led to the formation of a large number of resistant weed populations and the succession of weed communities. Convolvulus rose as the dominant weed; the resistance of crabgrass to atrazine increased, and the control effect decreased

To sum up, there are problems such as large amount of atrazine, many residues in the soil, and poor control effect on some atrazine-resistant weeds (mainly such as crabgrass).

[0004] Chinese patent 201810139901.7 discloses a compound and its herbicidal activity (structural formula is as follows). The compound is mainly used in paddy fields, and has control effects on penoxsulam-resistant barnyardgrass, annual and perennial grasses and broad-leaved weeds. However, the patent scheme does not mention the use of it in combination with other herbicides

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