Composite herbicide for crazyweed and other broad-leaf weeds

Abstract

A composite herbicide for crazyweed and other broad-leaf weeds is prepared from 3-(4,6-dimethoxypyrimidine-2-yl)-1-(N-methyl-N-methylsulfonyl-aminosulfonyl)-urea, 2,4-dichlorobutanate, plant growth regulator and surfactant. Its advantages include quickly taking its effect (24 hr), high effect up to 100%, low dosage and no toxic by-effect.

Description

technical field [0001] The present invention relates to a composition for removing Oxytropis and broadleaf plants. Background technique [0002] There are more than 20 species of Oxytropis DC. in our country, and Oxytropis yellow flower, Oxytropis small flower, and Oxytropis gansuensis are the most harmful. They are widely distributed on the vast natural grasslands in Xinjiang, Qinghai, Tibet, Inner Mongolia, Gansu and other regions. After horses and sheep accidentally eat Oxytropis, they become strongly dependent on Oxytropis, and the livestock begin to gain weight. If they continue to eat it, they will experience symptoms such as abdominal distension, weight loss, elevated body temperature, and lack of appetite, and eventually die. Now due to the unreasonable use of grassland, the grassland is seriously degraded, the good forage is reduced, and the morbidity and mortality of domestic animals poisoned by eating Oxytropis are increasing year by year, which seriously restric...

AI Technical Summary

Problems solved by technology

[0003] At present, there are relatively few systematic studies on killing Oxytropis chinensis, and the existing technology only has sample square spraying ("2,4-D butyl ester kills Oxytropis florifolius experiment", Wang Chongying, "Chinese Journal of Animal Husbandry", 1981, (3): 20-21; "Experimental Research on Chemical Control of Oxytropis" Li Jianke, Li Conglin, Ma Chang, etc., "Chinese Grassland", 1991, (6): 80) a method, the main problems are: (1) Oxytropis genus Leguminous plants, with well-developed root system, thick cuticle of leaves, difficult for drugs to invade, low drug concentration, poor killing effect, large drug concentration will cause phytotoxicity to high-quality forage grass in the herb

(2) The herbicide is formulated into a water agent and sprayed by conventional methods. Due to the strong sunlight in the dry grassland area of ​​our country, the agent is dried on the leaves in a short period of time, and the plants cannot absorb it well.

In addition, due to the difficulty in obtaining water in grassland areas, the water quality of spraying dilution water in many places cannot meet the requirements, resulting in the high cost of using this type of herbicide

(3) The test area is small, the dosage is large, the method is single, the control cost is high, and there is no promotion value