Complex herbicide for rice field

A herbicide and paddy field technology, applied in the direction of herbicides, algicides, biocides, biocides, etc., can solve the problems of long-term damage of weeds, weak lodging resistance, weak lodging resistance, etc., and achieve reduction Pesticide usage, beneficial to comprehensive agricultural management, and the effect of prolonging the service life

Inactive Publication Date: 2015-04-08
JIANGSU INST OF ECOMONES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

2. Risk of weeds: The growth period of direct-seeding rice and field rice is 20 days longer than that of transplanting, which leads to a long period of weed damage. In addition, the field tubes are wet and sweaty alternately, and barnyardgrass and Qianjinzi grow vigorously
3. The lodging resistance is not strong; the direct seeding rice has a shallow root system, and its lodging resistance is weaker than that of the transplanted field

Method used

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  • Complex herbicide for rice field
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Experimental program
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Effect test

preparation Embodiment

[0015]

[0016]

[0017] The inventors found that the effect of using suspending agent (SC) in this formula is better.

[0018] Suspension concentrate refers to the preparation that uniformly disperses the solid pesticide original drug in water with particles below 4 microns. The international code is SC. The solid pesticides and adjuvants that are poorly soluble in water are ground and dispersed in aqueous media. The continuous phase is water. Since SC does not have the problem of flying dust like wettable powder (WP), it is non-flammable and explosive, has small particle size, high biological activity, large specific gravity, and small packaging volume, which is safer and more environmentally friendly than other pesticide formulations.

[0019] Suspension concentrates are divided into water suspension concentrates and oil suspension concentrates. Aqueous suspensions use water as a solvent. Oil suspensions use oil as the main solvent and do not contain water.

[002...

Embodiment 1

[0024] Example 1 is used to control annual weeds in paddy fields, 5% bispyribac-pentoxsulam suspension concentrate is sprayed with water at a dosage of 50 ml / mu, and the control effect is 92.6% 30 days after application.

Embodiment 2

[0025] Example 2 For the control of annual weeds in paddy fields, the dosage of 5% bispyribac-pentoxsulam suspension concentrate was 100 / mu mixed with water and sprayed, and the control effect was 95.9% 30 days after the application.

[0026] The crops in each treatment plot were growing well, and no drug spots were seen in each treatment plot, which indicated that the compound medicament of the present invention was safe to the crops. It shows that the composition of bispyribac-ether and penoxsulam of the present invention can better control annual weeds in paddy fields, reduce the amount of medicine, reduce costs, delay the generation of weed resistance, and reduce environmental pollution.

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Abstract

A complex herbicide for rice field comprises two active ingredients of penoxsulam and bispyribac sodium in the weight ratio of 2.5-3:1.5-2.4, and is a suspending agent. The herbicide provided by the invention has the advantages of safety, fastness, wide weed control spectrum, long application time, and little affection by the environment.

Description

technical field [0001] The invention relates to a compound herbicide for paddy fields. Background technique [0002] Rice is an important food crop in my country, which is related to the national economy, the people's livelihood and the country's food security. Due to the ease of sowing, saving labor costs, and high yield, direct-directed rice has developed very rapidly, but its three major risks cannot be ignored. 1. Low-temperature rotten seeds in early spring: High temperature in early spring is conducive to the growth of direct-seeding rice, and rotten seeds rarely occur. 2. Risk of weeds: The growth period of direct-seeding rice and field rice is 20 days longer than that of transplanting, which leads to a long period of weed damage. In addition to the alternating water and sweat in the field, barnyardgrass and Qianjinzi grow vigorously. Therefore, it is necessary to weed twice. The first time is 2-4 days after the direct seeding or after the two leaves of the seedling...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/90A01P13/00A01N43/54
Inventor 孔繁蕾张旺庚吴小平
Owner JIANGSU INST OF ECOMONES
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