CN1242938A

CN1242938A - Weedicide

Info

Publication number: CN1242938A
Application number: CN 99114323
Authority: CN
Inventors: 钱永康
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-07-12
Filing date: 1999-07-12
Publication date: 2000-02-02
Anticipated expiration: 2019-07-12
Also published as: WO2001003506A1; AU5670600A; CN1078443C

Abstract

The present invention discloses a "Caodashuai" weedicide. Its composition includes (wt%) isoprotuion 1-95%, bensulfuron-methyl 0.1-20%, 885 1-20%, cleaning agent 1-10%, dispersing agent 1-10% and the rest is filler. Said weedicide possesses obvious spectrum-broadening and synergistic action, and its dose is less, so that it improves the safety of environment and rice, and is favourable for reducing cost and raising yield of grain crops.

Description

Weed killer herbicide

The present invention relates to a kind of weed killer herbicide, especially a kind of herbicides for use in paddy that is mixed by major-minor composition belongs to technical field of pesticide.

China mainly is Acetochlor, the third careless amine, butachlor at the herbicides for use in paddy of usefulness at present, and complexing agent.Though this class weed killer herbicide can be extremely removes most weeds of barnyard grass grass and so in the rice field, can not effectively kill except that part weeds such as moleplant seeds, and the time seedling of wound phenomenon is arranged, thereby the weeding in incompatibility light cultivation rice field.Along with the development of agricultural science and technology, it is complicated various that the tillage method in rice field becomes.For example, rice transplanting, various tillage methods such as live have appearred on the rice transplanting basis.The variation of this tillage method has caused the variation of weeds in paddy field, thereby requires herbicides for use in paddy should prevent and kill off most of common weeds, requires simultaneously weed killer herbicide that the young tender paddy rice of paddy rice, especially rice transplanting, tillage method such as live is not had injury again.Understand according to the applicant, the someone works out the desirable weed killer herbicide that adapts to China's rice field tillage method variation not yet so far.

The object of the invention is: change the new demand that produces at China rice field tillage method, propose weed killer herbicide---" careless commander in chief " weed killer herbicide of a kind of broad weed-killing spectrum,, better adaptability harmless substantially to paddy rice.

Through the inventor various existing weed killer herbicides are analyzed, and the composition that might produce new effect repeatedly adds observation experiment effect behind the Alon, finally formed following technical scheme of the present invention: during preparation " careless commander in chief " weed killer herbicide, feasible proportioning is:

Isoproturon 1-95%

Bensulfuron 0.1-20%

885????????????????1-20％

Detergent 1-10%

Dispersant 1-10%

All the other are filler.Wherein the chemical structural formula of isoproturon be with

Toward being used for the dry land weeding, be a kind of dry land herbicide, never the someone was applied to the paddy field in the past, experiment is found, by dry land modify-water field usefulness, it kills careless vigor and increases sharply at double, is killing under the essentially identical situation of careless effect with isoproturon, its usage amount only is below 32% of dry land, so safety improves obviously; And with chemical structural formula be Bensulfuron mix after, the spread spectrum effect is obvious, kills careless scope and significantly enlarges, and improved the activity of using separately separately greatly, in live field, all the more so when use in the seedling field.885 chemical structural formula is

In order to increase lubrication, the effect of detergent is the wetting and suspensibility that improves weed killer herbicide, and dispersant can make various components be able to abundant mixing.

In a word, " careless commander in chief " of the present invention weed killer herbicide has the effect of obvious spread spectrum synergy, has improved the degree of safety of environment and paddy rice owing to dosage reduces, and helps reducing cost, and improves cereal crops output, tallies with the national condition.

Find behind the further experiment that " careless commander in chief " weed killer herbicide proportioning preferably is:

Isoproturon 20-80%

Bensulfuron 0.2-10%

885?????????????????3-10％

Detergent 2-10%

Dispersant 3-10%

All the other are filler.

Desirable proportioning is:

Isoproturon 50-70%

Bensulfuron 1-5%

885?????????????????5-8％

Detergent 5-8%

Dispersant 5-6%

All the other are filler.

The invention will be further described below in conjunction with embodiment.

Detergent in the present embodiment is that (chemical structural formula is L5

NNO, the proportioning of each component is:

Isoproturon 60%

Bensulfuron 2.5%

885???????????????4％

Detergent (L5) 4%

Dispersant (NNO) 3%

All the other are filler.

Below be The Institute for the Control of Agrochemicals of the Ministry of Agriculture,PRC, experts such as Jiangsu, Anhui, Zhejiang, the Shanghai plant protection unit head of a station carry out field efficacy and investigate, and are reported comparative efficacy test that the experimental field is done by the Haining City plant protection unit:

June 2 99 year sowing time, spraying time on June 4th, 99, June 24 99 year control time

(60% careless commander in chief is present embodiment proportioning " careless commander in chief " weed killer herbicide, and it is the third representative careless amine weed killer herbicide that grass kills the spy)

Handle	60% careless commander in chief	Grass kills special	Not medication	Remarks
Handle	60% careless commander in chief	Grass kills special	Not medication	Remarks	Dosage g/ mu	????60	????100
Average residual dogstail	????0.67	????1.67	????7.33		Dosage g/ mu	????60	????100
Average residual dogstail	????0.67	????1.67	????7.33		Preventive effect %	????90.9％	????77.22％
Average residual nutgrass flatsedge	????0.00	????0.33	????40		Preventive effect %	????90.9％	????77.22％
Average residual nutgrass flatsedge	????0.00	????0.33	????40		Preventive effect %	????100％	????99.2％
Average residual broadleaved herb	????0.67	????5.67	????47.7		Preventive effect %	????100％	????99.2％
Average residual broadleaved herb	????0.67	????5.67	????47.7		Preventive effect %	????98.6％	????88.11％

From above report as can be seen, " careless commander in chief " of the present invention weed killer herbicide to the preventive effects of various weeds all above 90%, especially the preventive effect to dogstail, broadleaved herb obviously surpasses grass spy extremely, and its dosage has only grass to kill spy's 60%, therefore harmless substantially to rice shoot, cost only is the careless spy's of killing about 50%.Investigate that the expert is consistent to be thought: " careless commander in chief " effect of herbicides is good, safe in utilization, has originality, is a kind of desirable weed killer herbicide that adapts to modernized farming, should further enlarge application.

Except that the investigation of above-mentioned authoritative institution, report, put into practice verified, after adopting " careless commander in chief " weed killer herbicide of present embodiment, can not re-use the bigger weed killer herbicides of harmfulness such as Acetochlor, the third careless amine, butachlor, thereby really realized safe weeding, it kills careless effect and but obviously is better than Acetochlor, the third careless amine, butachlor and complexing agent thereof, and its range of application also comprises seedling throwing field, seedling field etc. except that rice field, live field.No matter south is still northern, and no matter the pesticide-clay mixture poison is fertile is used, still sprays and use, and all can arrive desirable effect, and its adaptability really belongs to exception in weed killer herbicide.

Claims

1. one kind " careless commander in chief " weed killer herbicide, the proportioning when its each component mixes is isoproturon 1-95%, bensulfuron 0.1-20%, 885 is 1-20%, detergent 1-10%, dispersant 1-10%, all the other are filler.

2. " careless commander in chief " according to claim 1 weed killer herbicide is characterized in that the proportioning when each component mixes is isoproturon 20-80%, bensulfuron 0.2-10%, and 885 is 3-10%, detergent 2-10%, dispersant 3-10%, all the other are filler.

3. " careless commander in chief " according to claim 1 weed killer herbicide is characterized in that the proportioning when each component mixes is isoproturon 50-70%, bensulfuron 1-5%, and 885 is 5-8%, detergent 5-8%, dispersant 5-6%, all the other are filler.

4. " careless commander in chief " according to claim 1 weed killer herbicide is characterized in that described detergent is L5.

5. " careless commander in chief " according to claim 1 weed killer herbicide is characterized in that described dispersant adopts NNO.