Paddy field weeding composition

A herbicidal composition, a technology for paddy fields, applied in the directions of herbicides, algaecides, biocides, animal repellents, etc. The effect of producing medicinal properties, reducing pollution, and reducing the amount of use

CN106259402AInactive Publication Date: 2017-01-04GUANGDONG ZHONGXUN AGRI TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2017-01-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a paddy field weeding composition. The composition is prepared from weeding active ingredients including bispyribac-sodium, bensulfuron methyl and pretilachlor, and further comprises a pesticide auxiliary agent, wherein the weight ratio of the weeding active ingredients, namely the ratio of the bispyribac-sodium to the bensulfuron methyl to the pretilachlor is (1 to 20) to (1 to 20) to (10 to 100). The composition provided by the invention is used for removing annual weeds of a paddy field and the weeding effect is obviously improved; a weeding spectrum is expanded; meanwhile, the use amount of pesticide is reduced and the pollution to the environment is alleviated; the drug resistance of weeds is delayed.
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Description

technical field

[0001] The invention relates to a paddy field herbicidal composition and its application field, in particular to a composition of active ingredients bispyribac, bensulfuron-methyl and pretilachlor, and the composition is used for controlling annual weeds in paddy fields. Background technique

[0002] When weeds occur in paddy fields, the grass phase is complex, and a variety of weeds are mixed. Chemical weeding methods are one of the main means of controlling weeds in paddy fields. The use of a single compound type herbicide cannot solve the weeds of various families and genera in the farmland, and all of them will show some defects and limitations. Mixing different types of compounds has the advantages of improving the actual effect, expanding the weeding spectrum, saving time and labor, and delaying the emergence of resistance.

[0003] Known compound bispyribac-sodium (bispyribac-sodium), chemical name: 2,6-bis(4,6-dimethoxypyrimidinyl-2-oxyl)sodium benzo...

Examples

Embodiment 1

[0031] Example 1: Determination of the toxicity of the composition.

[0032] Using soil irrigation method (NY / T 1155.5-2006): in an area of ​​0.01m 2 Fill the pot with a certain amount of soil to 3 / 4 of the pot, and then water from the top of the pot to make the soil completely moist to saturated. Sow 15-20 seeds of the target weeds evenly on the surface of the pot soil, cover with 0.5-2 cm of fine soil according to the size of the seeds, and then place them in the greenhouse for cultivation. After 24 hours, each pot was irrigated with 10ml of medicinal solution quantitatively, and each treatment was repeated 4 times, and the treatment without chemical was set as the control. After the treatment, the test materials were placed in the greenhouse for cultivation, and the growth of the target weeds was regularly observed. Always keep a 1-2cm water layer in the treatment pot. After 21 days, visually inspect the damage symptoms and growth inhibition of the target, and weigh the f...

Embodiment 2

[0052] Embodiment 2: composition preparation method and application

[0053] The active ingredients in the following preparation methods are bispyribac-methyl technical, bensulfuron-methyl technical and pretilachlor technical, and the percentages of each component are percentages.

[0054] 0.02% bispyribac, 0.1% bensulfuron-methyl, 1.88% pretilachlor granules: bisfluben 0.02%, bensulfuron-methyl 0.1%, pretilachlor 1.88%, kaolin 6%, sticky powder 1%, 1 , 0.5% of 2-propanediol, 1.5% of 6% PVA solution, and 100% of quartz sand (8-16 mesh). Premix and pulverize kaolin to absorb pretilachlor with bispyribac, bensulfuron-methyl, and sticky powder, then add 1,2-propanediol and quartz sand, after the adhesion coating is complete, add PVA solution for coating, and dry , packaged after passing the inspection, and can obtain 0.02% bispyribac-0.1% bensulfuron-methyl-1.88% pretilachlor granules.

[0055] Table 4, the present invention before sowing rice seeding application effect

[005...