CN103518755A - Rice field herbicide isoproturon as well as preparation method of herbicide isoproturon - Google Patents

Abstract

The invention relates to a herbicide as well as a preparation method thereof, and particularly relates to herbicide isoproturon applied to a rice field as well as a preparation method of the herbicide isoproturon. The rice field herbicide isoproturon comprises isoproturon, auxiliaries and packing; the auxiliaries contain wetting agents, emulsifying agents, dispersion agents and protection agents. Because components with different effects, such as the wetting agents, the dispersion agents and the emulsifying agents, are added into the herbicide provided by the invention, and take effects with the protection agents, so that the protection agents can take effects effectively.

Description

Herbicide for paddy field isoproturon and manufacture method

Technical field

The present invention relates to a kind of weed killer herbicide and manufacture method thereof, be specially isoproturon single dose weed killer herbicide and manufacture method thereof for paddy field.

Background technology

Isoproturon is phenyl ureagroup herbicides, is mainly applicable at present the nonirrigated farmlands such as wheat, corn, peanut, cotton and prevents and kill off grassy weed and most of broad leaved weed.

Author or inventor were using the built agent of isoproturon as transplanted rice field with the weeding of live field in the past, as phonetic in registered benzyl. isoproturon, this weed killer herbicide is mainly mixed by bensulfuron-methyl and isoproturon, the registration of isoproturon single dose and use were not once reported at paddy field, and research shows that phenyl ureagroup herbicides can produce significant inhibitory action to the vigor of the accumulation of rice seedling substance in vivo, root system.In wheat and paddy rice interplanting farmland, wheatland is used after phenyl ureagroup herbicides, and poisoning appears in rear stubble rice seedling sometimes, and the high temperature time is especially obvious.

Summary of the invention

In order to solve the problems of the technologies described above, the invention provides a kind of weed killer herbicide of being made by isoproturon single dose, be directly used in agent for removing grass in paddy field, and rice seedling is acted on without causing evil, concrete technical scheme is as follows:

Herbicide for paddy field isoproturon, comprises isoproturon, auxiliary agent and filler; Described auxiliary agent is wetting agent, emulsifier, dispersant and protectant; Wherein isoproturon part by weight is that 10-90%, described wetting agent part by weight are 0.1-15%, and emulsifier part by weight is 0.1-15%, and dispersant part by weight is 1-20%, and protectant part by weight is 0.1-10%, and all the other are filler.

As preferred technical scheme, isoproturon part by weight is 50-70%, and described wetting agent part by weight is 0.2-10%, and emulsifier part by weight is 0.2-8%, and dispersant part by weight is 2-10%, and protectant part by weight is 0.2-5%, and all the other are filler.

Wetting agent is fatty alcohol and derivative or similar surfactant, is mainly to make the former pharmaceutically active ingredient of solid state in weed killer herbicide more easily by the moistening formation suspension of water, after easily being absorbed by weeds, plays a role.

Emulsifier is sulphonic acids emulsifier, is mainly that to allow in former medicine material not soluble in water form emulsification liquid, gives full play to active ingredient in former medicine.

Dispersant is methyl naphthalene sulfonate formaldehyde condensate, can prevent the sedimentation and the cohesion that at the former medicine composition of liquid, occur.

Protectant is to dimethylamino benzene diazosulfonic acid sodium, and protectant can avoid rice paddy seed or seedling to be subject to the growth inhibition effect of weed killer herbicide, effectively protects rice paddy seed or seedling.

Filler is kaolin, diatomite solid kind, or solvent, such as water.

The production method of herbicide for paddy field Alon is:

(1) the former powder of isoproturon, auxiliary agent and filler mix in predetermined ratio, mix and stir 50 to 60 minutes in mixer;

(2) mixture of uniform mixing is pulverized through the airslide disintegrating mill of 0.7Mpa pressure, more than the particle diameter of mixture is controlled at 400 orders;

(3) product of air-flow crushing is carried out to mixed once again, reach former powder, auxiliary agent, filler and fully mix in 400 order fineness.

High, the easy leaching of isoproturon solvability in water, isoproturon is mainly weeds root absorption, and the absorption of part cauline leaf, in conduit, with moisture, be upwards transmitted to leaf, be distributed in blade tip and leaf margin more, in green cell, play a role, it is the inhibitor that photosynthesis electronics transmits, and disturbs photosyntheticly normally to carry out, and under illumination, can not emit oxygen and carbon dioxide, organic matter generates and stops, and responsive weeds are hungry and dead.In weed killer herbicide provided by the invention, owing to having added the not composition of same-action such as wetting agent, dispersant, emulsifier simultaneously, can allow the former medicine of isoproturon keep liquid, can enter fast soil, by weeds root absorption.

Isoproturon lasting effect in soil is shorter than other phenyl ureagroup herbicides such as chlortolurons simultaneously, 20 days half life period of isoproturon single dose, and the chlortoluron half life period be 70 days short, in weed killer herbicide provided by the invention owing to having wetting agent, dispersant, emulsifier, the former medicine of isoproturon is fully dissolved, can accelerate isoproturon and decompose.

Paddy rice particularly japonica rice is different to isoproturon Assimilation and conductivity and accretion rate from weeds, thereby the susceptibility of paddy rice and weeds exists large difference, has added protectant effect, more can avoid the impact of isoproturon on paddy rice.

The dispersant methyl naphthalene sulfonate formaldehyde condensate that has used dye industry to use in herbicide for paddy field isoproturon provided by the invention, this dispersant is use and dyestuff and concrete field mainly, and the stabilizing agent of rubber industry latex is, the auxiliary tanning agent of leather industry.But use and not relate at pesticide field, the present invention has used this dispersant,, can effectively weed killer herbicide be had good quality, stable storage simultaneously and wetting agent and dispersant acting in conjunction.

The protectant adding in weed killer herbicide; in the weed killer herbicide of nonirrigated farmland cereal, there is application; but also do not have for paddy field; different mainly due to environment for use; rice paddy seed or seedling easily come to harm because having used weed killer herbicide; the growth of seed or seedling is produced and causes the even effect of leaf death of evil, having under the environment of water, protectant is difficult to effectively play a role.In weed killer herbicide provided by the invention, owing to having added the not composition of same-action such as wetting agent, dispersant and emulsifier simultaneously, with protectant acting in conjunction, protectant can effectively be worked.

Embodiment

Under greenhouse pot culture condition, carry out contrast experiment, adopt the weed killer herbicide of 7 groups of different formulations ratios and do not use the plantation situation of weed killer herbicide to contrast.Wetting agent is fatty alcohol, emulsifier alkyl naphthalene sulfonic acid formaldehyde condensation products sodium salt, and dispersant is methyl naphthalene sulfonate formaldehyde condensate, protectant dimethylamino benzene diazosulfonic acid sodium, part by weight is as following table, and all the other are filler kaolin.

Planting experiment is rice seedlings, and wherein weeds are mainly monocotyledon weed barnyard grass.Spraying time is japonica rice, barnyard grass 2-3 leaf phase, starts to check after 25 days, and check result is as following table 1:

The Security of rice that adds different amount safeners in table 1 isoproturon is measured

Upper table presentation of results, unprotect agent isoproturon to rice injury obviously, adds protectant obvious symptom that paddy rice hinders seedling of improving that has, and wherein injury rate and protectant usage amount have direct impact.The seedling-damaging ratio that contains 0.1,1.0,2.5,5.0 grams of protectants as every hectogram is respectively 53.1%, 26.7%, 3.3%, 0.0%, and when protectant content reaches 5%, paddy rice is no longer injured, and in view of this, addition is advisable with 2.5% left and right.

In table, result also illustrates, adding protectant has increase to prevent and kill off barnyard grass effect, if alone isoproturon herbicide effect ratio is with low 23.1% percentage point of protectant.

Claims (8)

1. herbicide for paddy field isoproturon, is characterized in that, comprises isoproturon, auxiliary agent and filler; Described auxiliary agent is wetting agent, emulsifier, dispersant and protectant; Wherein isoproturon part by weight is that 10-90%, described wetting agent part by weight are 0.1-15%, and emulsifier part by weight is 0.1-15%, and dispersant part by weight is 1-20%, and protectant part by weight is 0.1-10%, and all the other are filler.

2. herbicide for paddy field isoproturon according to claim 1; it is characterized in that; described isoproturon part by weight is 50-70%; described wetting agent part by weight is 0.2-10%; emulsifier part by weight is 0.2-8%; dispersant part by weight is 2-10%, and protectant part by weight is 0.2-5%, and all the other are filler.

3. according to the herbicide for paddy field isoproturon described in claim 1-2, it is characterized in that, described wetting agent is fatty alcohol and derivative thereof.

4. according to the herbicide for paddy field isoproturon described in claim 1-2, it is characterized in that, described emulsifier is sulphonic acids emulsifier.

5. according to the herbicide for paddy field isoproturon described in claim 1-2, it is characterized in that, described dispersant is methyl naphthalene sulfonate formaldehyde condensate.

6. according to the herbicide for paddy field isoproturon described in claim 1-2, it is characterized in that, described protectant is to dimethylamino benzene diazosulfonic acid sodium.

7. according to the herbicide for paddy field isoproturon described in claim 1-2, it is characterized in that the kaolin that described filler is solid kind and diatomite, or liquid flux.

8. the production method of paddy rice Alon is:

(1) the former powder of isoproturon, auxiliary agent and filler mix in the ratio described in claim 1-2, mix and stir 50 to 60 minutes in mixer;

(2) mixture of uniform mixing is pulverized through the airslide disintegrating mill of 0.7Mpa pressure, more than the particle diameter of mixture is controlled at 400 orders;

(3) product of air-flow crushing is carried out to mixed once again, reach former powder, auxiliary agent, filler and fully mix in 400 order fineness.