CN104145979A - Herbicide for weeds in transplanted rice field and application method thereof - Google Patents

Abstract

The invention discloses a herbicide and the application method thereof for weeds in a transplanted rice field. According to the characteristics of weeds in the transplanted rice field, the herbicide is obtained through reasonably screening and compounding the following herbicides with different efficacies and properties: pretilachlor, penoxsulam, bensulfuron methyl, cyhalofop-butyl, a quinoxalyloxy phenoxy propionate compound, sulfonylureas and benzobicylon, and is used in the rice field in different growth periods of rice according to different formulas and proportions, so that the weed killing effect is good, low toxicity is achieved, the weed control spectrum is expanded, the application amount is obviously reduced, the application times and application cost are reduced, the preparation of the herbicide is convenient, the storage time is longer, and the stronger practical value is achieved.

Description

A kind of transplanted rice field weeds herbicide and application process thereof

Technical field

The present invention relates to the herbicide technology of paddy rice, especially relate to a kind of transplanted rice field weeds herbicide and application process thereof.

Background technology

Because agriculture production benefit is low, a large amount of Labor Transfer in rural area, winter slack, field area rose year by year, and farmland weed grows wantonly, and the safety in production of paddy rice in serious threat.Most peasant household is because weeding before ploughing is not thorough, after rice transplanting weeding not in time, and less in the face of the weed killer herbicide targetedly of the complicated and diversified weeds of kind, cause herbicidal effect not good enough, crop smothering loss in rice field constantly increases the weight of.In recent years my rice field, district crop smothering occurrence degree is 3-4 level, belong to the medium generation of laying particular stress on, there is area and account for 100% of Monitoring of Paddy Rice Plant Area, nearly 10,000 tons of Rice Yield Loss Caused, therefore, developing a kind of weeds kind for transplanted rice field, carry out in time, economic, safety, efficient killing weeds in rice field, is the Important Action that ensures my district's Rice Production, grain security.

In transplanted rice field, weeds mainly contain barnyard grass, difformed galingale herb, mexicana, the fire hose, Monochoria vaginalis, short arrowhead, miliary fimbristylis herb, needle spikesedge herb, Herba Cyperi Glomerati, cyperus iria, moleplant seed, false loosestrife, water three-coloured amaranth, alternanthera philoxeroides, pondweed, rhizoma alismatis, four leaf duckweeds, Procumbent Falsepimpernel, Eclipta prostrata Deng16 section, 24 kinds of weeds.Be the suppressing weed seed germination phase beginning of spring to mid-May, be a minute evil phase mid-May to mid-June, mid-June to late July is weeds reproductive stage, wherein advantage weeds are barnyard grass, difformed galingale herb, mexicana, needle spikesedge herb, and for advantage weeds, developing targetedly weed killer herbicide is a particularly important research topic.

Summary of the invention

Goal of the invention: high in order to solve in prior art the existing rice transplanting field weed extent of injury, the less problem of weed killer herbicide targetedly, the present invention proposes a kind of to the preventive effect of weeds in field well and can expand a kind of transplanted rice field weeds herbicide and the application process thereof of herbicide spectrum.

Technical scheme: to achieve these objectives, the present invention takes following technical scheme: a kind of transplanted rice field weeds herbicide, the third careless amine of the component that comprises following percentage by weight: 10%-20%, the penoxsuam of 5%-15%, the aryloxyphenoxypropanoates compounds of the cyhalofop-butyl of the bensulfuron-methyl that the mass fraction of 5%-10% is 10%, 0%-15%, 0%-10%, the sulfonylurea of 0%-15%, the benzobicylon of 3%-20%, the surfactant of 1%-5%, the dispersant of 1%-5%, water surplus.

Further, described surfactant is fats surfactant.

Further, described aryloxyphenoxypropanoates compounds is water-dispersible granules.

Further, the heterocyclic moiety in described sulfonylurea is pyrimidine-2 group.

Further, described dispersant is fatty acid dispersant.

The application process of above-mentioned a kind of transplanted rice field weeds herbicide, is specially at the different growing stage amount of application of paddy rice different with Herbicidal composition:

(a) before transplanting: 3-6d before rice transplanting, drain rice field internal water accumulation, after the weed killer herbicide of filling a prescription has below been prepared, spray to execute and spill: the third careless amine of 15%-20%, the penoxsuam of 5%-10%, the sulfonylurea of the bensulfuron-methyl that the mass fraction of 5%-10% is 10%, 10%-15%, the benzobicylon of 3%-10%, the surfactant of 1%-5%, the dispersant of 1%-5%, water surplus; Sprinkling amount is 20-30kg/ mu;

(b) after transplanting: 7-10d after rice transplanting, after the weed killer herbicide of filling a prescription has below been prepared, spray to execute and spill: the third careless amine of 10%-15%, the penoxsuam of 10%-15%, the aryloxyphenoxypropanoates compounds of the cyhalofop-butyl of the bensulfuron-methyl that the mass fraction of 5%-10% is 10%, 5%-10%, 5%-10%, the benzobicylon of 10%-20%, the surfactant of 1%-5%, the dispersant of 1%-5%, water surplus; Sprinkling amount is 40-50kg/ mu;

(c) tillering stage: in paddy rice 5-7 leaf tillering stage, after the weed killer herbicide of filling a prescription has below been prepared, spray to execute and spill: the third careless amine of 10%-15%, the penoxsuam of 5%-10%, the cyhalofop-butyl of the bensulfuron-methyl that the mass fraction of 5%-10% is 10%, 10%-15%, the sulfonylurea of 5%-10%, the benzobicylon of 3%-8%, the surfactant of 1%-5%, the dispersant of 1%-5%, water surplus; Sprinkling amount is 25-35kg/ mu.

Various materials in weed killer herbicide of the present invention are used as separately weed killer herbicide all can not reach efficient herbicidal effect to the weeds of transplanted rice field, composite through screening, and can reach above object for the use that paddy growth different times carries out different proportioning weed killer herbicides.

Beneficial effect: a kind of transplanted rice field weeds herbicide provided by the invention and application process thereof, the characteristic of weeds and the weeding principle of various weed killer herbicides for transplanted rice field, by the third careless amine, penoxsuam, bensulfuron-methyl, cyhalofop-butyl, aryloxyphenoxypropanoates compounds, it is composite that these several weed killer herbicides with different efficacies and characteristic of sulfonylurea and benzobicylon carry out reasonably screening, and at the different times use different formulations of paddy growth and the weed killer herbicide of proportioning, not only to killing of weeds, remove effective, and low toxicity, herbicide spectrum expands, significantly reduced dosage, spraying times and drug cost, and weed killer herbicide preparation is convenient, holding time is long, there is very strong practical value.

Embodiment

Embodiment 1:

A kind of transplanted rice field weeds herbicide, the component that comprises following percentage by weight: the bensulfuron-methyl that the third careless amine of 10%, 5% penoxsuam, 5% mass fraction are 10%, 10% aryloxyphenoxypropanoates compounds, 15% sulfonylurea, 3% benzobicylon, 1% surfactant, 5% dispersant, water surplus.

Embodiment 2:

A kind of transplanted rice field weeds herbicide, the component that comprises following percentage by weight: the bensulfuron-methyl that the third careless amine of 20%, 15% penoxsuam, 10% mass fraction are 10%, 15% cyhalofop-butyl, 20% benzobicylon, 5% surfactant, 1% dispersant, water surplus.

Embodiment 3:

A kind of transplanted rice field weeds herbicide, the component that comprises following percentage by weight: the bensulfuron-methyl that the third careless amine of 15%, 10% penoxsuam, 7% mass fraction are 10%, 8% cyhalofop-butyl, 5% aryloxyphenoxypropanoates compounds, 8% sulfonylurea, 10% benzobicylon, 3% surfactant, 3% dispersant, water surplus.

Embodiment 4

2013-2014, researcher chooses two area paddy fields identical, that plot quality is close and tests in area, Jurong, Jiangsu Province, all adopt identical high-grade rice rice shoot to transplant plantation, the weed killer herbicide of control group adopts traditional formula and sprinkling amount, and experimental group adopts formula and the application method of following weed killer herbicide:

(a) before transplanting: 3-6d before rice transplanting, drain rice field internal water accumulation, the weed killer herbicide of formula is below sprayed to execute after having prepared and spill: the bensulfuron-methyl that the third careless amine of 18%, 7% penoxsuam, 8% mass fraction are 10%, 12% sulfonylurea, 6% benzobicylon, 3% surfactant, 3% dispersant, water surplus; Sprinkling amount is 25kg/ mu;

(b) after transplanting: 7-10d after rice transplanting, the weed killer herbicide of formula is below sprayed to execute after having prepared and spill: the bensulfuron-methyl that the third careless amine of 13%, 13% penoxsuam, 8% mass fraction are 10%, 8% cyhalofop-butyl, 8% aryloxyphenoxypropanoates compounds, 15% benzobicylon, 3% surfactant, 3% dispersant, water surplus; Sprinkling amount is 45kg/ mu;

(c) tillering stage: in paddy rice 5-7 leaf tillering stage, the weed killer herbicide of formula is below sprayed to execute after having prepared and spill: the bensulfuron-methyl that the third careless amine of 12%, 7% penoxsuam, 7% mass fraction are 10%, 12% cyhalofop-butyl, 8% sulfonylurea, 6% benzobicylon, 3% surfactant, 3% dispersant, water surplus; Sprinkling amount is 30kg/ mu.

Experimental group and control group, other plantations, irrigation, way to manage are all identical, and carry out an acceptance inspection in June, 2014, whole herbicidal effect and as shown in table 1 to the removal effect of several main weeds:

Table 1: experimental group and the contrast of control group check and acceptance result

From the data result of table 1, can find out, use a kind of transplanted rice field weeds herbicide of the present invention and application process thereof, for the characteristic of rice transplanting field weed, not only its advantage weeds barnyard grass, difformed galingale herb, mexicana, needle spikesedge herb etc. are had to more than 93% herbicidal effect, and whole weeding rate reaches more than 95%, herbicide spectrum expands, and dosage is low, low toxicity, spraying times and drug cost all decrease, in addition weed killer herbicide preparation is convenient, and the holding time is long, has very strong practical value.

It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvement, these improvement also should be considered as protection scope of the present invention.

Claims (6)

1. a transplanted rice field weeds herbicide, it is characterized in that comprising the third careless amine, the penoxsuam of 5%-15%, the aryloxyphenoxypropanoates compounds of the cyhalofop-butyl of the bensulfuron-methyl that the mass fraction of 5%-10% is 10%, 0%-15%, 0%-10%, the sulfonylurea of 0%-15% of the component of following percentage by weight: 10%-20%, the benzobicylon of 3%-20%, the surfactant of 1%-5%, the dispersant of 1%-5%, water surplus.

2. transplanted rice field weeds herbicide according to claim 1, is characterized in that: described surfactant is fats surfactant.

3. transplanted rice field weeds herbicide according to claim 1, is characterized in that: described aryloxyphenoxypropanoates compounds is water-dispersible granules.

4. transplanted rice field weeds herbicide according to claim 1, is characterized in that: the heterocyclic moiety in described sulfonylurea is pyrimidine-2 group.

5. transplanted rice field weeds herbicide according to claim 1, is characterized in that: described dispersant is fatty acid dispersant.

6. an application process for transplanted rice field weeds herbicide claimed in claim 1, is characterized in that: the different growing stage in paddy rice is specifically different:

(a) before transplanting: 3-6d before rice transplanting, drain rice field internal water accumulation, after the weed killer herbicide of filling a prescription has below been prepared, spray to execute and spill: the third careless amine of 15%-20%, the penoxsuam of 5%-10%, the sulfonylurea of the bensulfuron-methyl that the mass fraction of 5%-10% is 10%, 10%-15%, the benzobicylon of 3%-10%, the surfactant of 1%-5%, the dispersant of 1%-5%, water surplus; Sprinkling amount is 20-30kg/ mu;

(b) after transplanting: 7-10d after rice transplanting, after the weed killer herbicide of filling a prescription has below been prepared, spray to execute and spill: the third careless amine of 10%-15%, the penoxsuam of 10%-15%, the aryloxyphenoxypropanoates compounds of the cyhalofop-butyl of the bensulfuron-methyl that the mass fraction of 5%-10% is 10%, 5%-10%, 5%-10%, the benzobicylon of 10%-20%, the surfactant of 1%-5%, the dispersant of 1%-5%, water surplus; Sprinkling amount is 40-50kg/ mu;

(c) tillering stage: in paddy rice 5-7 leaf tillering stage, after the weed killer herbicide of filling a prescription has below been prepared, spray to execute and spill: the third careless amine of 10%-15%, the penoxsuam of 5%-10%, the cyhalofop-butyl of the bensulfuron-methyl that the mass fraction of 5%-10% is 10%, 10%-15%, the sulfonylurea of 5%-10%, the benzobicylon of 3%-8%, the surfactant of 1%-5%, the dispersant of 1%-5%, water surplus; Sprinkling amount is 25-35kg/ mu.