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A technology of herbicide and target substance, which is applied in the field of mixed herbicide composition, can solve the problems of poor drug efficacy and achieve the effects of reducing the degree of influence, long-lasting effect and obvious synergistic effect
Active Publication Date: 2014-04-30
辽宁海佳农化有限公司
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Problems solved by technology
[0003] In order to solve the problem of poor efficacy of existing corn herbic
Method used
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Embodiment 1
[0027] Example 1 A 25% by weight dispersible oil suspension concentrate of corn herbicides containing atrazine, flumesulam and nicosulfuron was prepared. Composition and percentage by weight are as follows: 1.5% of flumesulam, 19.5% of atrazine, 4% of nicosulfuron, 160115% of agricultural milk, 0.5% of organic bentonite, 49.5% of methyl oleate; the steps of the preparation method and The conditions are as follows: (1) According to the ratio of raw materials, various raw materials are added into the stirring tank and stirred for 30 minutes, and shearing is carried out at the same time during the stirring process; (2) The materials after stirring for 30 minutes are passed through sand mill machine, the particle size D50 must not be greater than 8 microns; (3) the ground material is added to a shear kettle and sheared for 30 minutes; the dispersible oil suspension concentrate of the composition is obtained.
[0028] Atrazine: chemical name: 2-chloro-4-diethylamino-6-isopropylamin...
Embodiment 2
[0033] Example 2 A 60% by weight dispersible oil suspension concentrate of corn herbicides containing atrazine, fensulfame and alachlor was prepared. The composition and weight percentage are as follows: 20% of atrazine, 1.5% of sulfachlor, 38.5% of W (alachlor), 15% of Nongru 160115%, and 25% of methyl oleate. All the other are with embodiment 1.
[0034] Alachlor: chemical name: 2-chloro-N-(2,6-diethylphenyl)-N-(methoxymethyl)acetamide; structural formula:
[0035]
Embodiment 3
[0036] Embodiment 3 replaces the alachlor of embodiment 2 with acetochlor; All the other are with embodiment 2.
[0037] Acetochlor: Chemical name: 2-ethyl-6-methyl--N-ethoxymethyl-α-chloroacetanilide.
[0038] Structural formula:
[0039]
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Abstract
The invention discloses a corn herbicide, which comprises flumetsulam and atrazine (b)W/(/b)(b), wherein the (b)W is nicosulfuron, alachlor, acetochlor, butachlor, propisochlor, metolachlor, or s-metolachlor; the mass ratio of flumetsulam to atrazine to W is (1-10):(5-60):(2-60). Low dosage of the herbicide comprising atrazine, flumetsulam and nicosulfuron can achieve the control efficacy of grassy weed and broad-leaf weed respectively by 98.1% and 99.3%, as well as comprehensive control efficacy by 84.5%-99.9%. The prevention effects of the herbicide comprising atrazine, flumetsulam and nicosulfuron on grassy weed and broad-leaf weed are respectively 92.2% and 100%. Compared with the single agent, the corn herbicide has very obviously synergistic interaction, the weeding effect after corn closing and seedling can be obviously improved. The resistance of weeds can be postponed, the corn herbicide is wide in the herbicide controlling spectrum and long in lasting period, and has safety on the corn and afterreap crops.
Description
technical field [0001] The invention belongs to the field of agricultural herbicides, and relates to a combination of sulfafenacil and atrazine, nicosulfuron, alachlor, acetochlor, butachlor, metolachlor and metolachlor Or a mixed herbicide composition of refined metolachlor and a preparation method thereof. Background technique [0002] At present, the weeding effect in corn fields is generally poor, especially the emergence of barnyardgrass, duckweed, velvetleum and other malignant weeds, which have a great impact on corn yield. Atrazine: It is a systemic selective pre-emergence and post-emergence herbicide. The root absorption is mainly, and the stem and leaf absorption is little. Scope of application Applicable to corn, sorghum, sugar cane, tea garden, rubber and orchard, nursery control of foxtail, teff, sagegrass, sedge, cocklebur, snakehead sausage, wild amaranth, green weed, purslane, gray vegetables, wild watermelon Seedlings, apocynum, crabgrass, cricket grass, ...
Claims
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