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Herbicide composition used in rice fields, and its application

A herbicidal composition and paddy field technology, applied in application, animal repellent, plant growth regulator, etc., can solve the problems of difficult simultaneous control, insufficient safety of paddy rice, and inability to control weeds in paddy fields at one time, so as to save Farming hours and labor costs, effects of rice safety

Inactive Publication Date: 2008-06-11
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, this compound cannot control most of the weeds in paddy fields at one time, and it is difficult to control barnyard grass, snakehead sausage, heteromorphous sedge, motherwort, etc. Rice cultivation methods are not safe enough

Method used

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  • Herbicide composition used in rice fields, and its application
  • Herbicide composition used in rice fields, and its application
  • Herbicide composition used in rice fields, and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The weight ratio is:

[0029] PTD-8 15%

[0030] Quinclorac 20%

[0031] Tween-80 5%

[0032] Polyethylene glycol 4%

[0033] Carboxymethylcellulose 1%

[0034] DMF make up 100%

[0035] The emulsifiable concentrate is prepared by a conventional method. The test results are shown in Table 1.

Embodiment 2

[0037] The weight ratio is:

[0038] PTD-8 27.5%

[0039] Quinclorac 10%

[0040] Tween - 20%

[0041] Sodium p-dodecylbenzenesulfonate 3%

[0042] Carboxymethyl Cellulose 4%

[0043] Xylene Top Up 100%

[0044] The emulsifiable concentrate is prepared by a conventional method. The test results are shown in Table 1.

Embodiment 3

[0046] The weight ratio is:

[0047] PTD-8 27.5%

[0048] Quinclorac 15%

[0049] Tween-40 2%

[0050] Polyethylene Glycol 5%

[0051] Carboxymethyl Cellulose 3%

[0052] Methanol make up 100%

[0053] The emulsifiable concentrate is prepared by a conventional method. The test results are shown in Table 1.

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Abstract

A composite herbicide for paddy rice field contains proportionally N'-(4,6- dimethoxypyridine-2-yl)-2,4-dichlorophenoxy acetylthiourea and dichloroquinolinic acid.

Description

technical field [0001] The invention relates to a herbicidal composition, in particular to a paddy field herbicidal composition. Background technique [0002] Rice is a food crop with a long history and a vast area. China has always been a major rice producer in the world. At present, about 33 million hectares of rice are planted every year, accounting for about 29% of the sown area of ​​food crops. The total rice production is 192 million tons, about Accounting for 42% of grain production, therefore, rice field weeds have also always been the primary consideration for weeding in farmland. [0003] Due to long-term water accumulation in paddy fields, a unique ecological environment is formed, and multi-level and complex weed communities are formed, which will cause great harm to the growth and production of rice. Chemical weeding in paddy fields started with phenoxycarboxylic acids. In the early 1950s, 2,4-D was applied to control broad-leaved weeds, and barnyardgrass becam...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N47/36A01N25/00
Inventor 薛思佳张雅凤
Owner SHANGHAI NORMAL UNIVERSITY