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Pesticide composition for preventing and treating sheath blight as well as preparation method and application thereof

A pesticide composition and technology for sheath blight, applied in botany equipment and methods, chemicals for biological control, applications, etc., can solve water separation, agglomeration and layering, influence of bactericidal effect, low solubility, etc. problems, to achieve the effect of not easy to coagulate and settle, excellent pourability, and improved dispersibility

Inactive Publication Date: 2020-07-03
SHANDONG BIO BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low solubility and poor dispersibility of thifuramide and hexaconazole in water, the pesticide composition suspension prepared by the two is prone to water separation, agglomeration, and layering after being placed for a period of time. , and it is not easy to shake well, the bactericidal effect will be affected during use

Method used

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  • Pesticide composition for preventing and treating sheath blight as well as preparation method and application thereof
  • Pesticide composition for preventing and treating sheath blight as well as preparation method and application thereof
  • Pesticide composition for preventing and treating sheath blight as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A kind of pesticide composition that is used for preventing and treating sheath blight, wherein, active ingredient is formulated according to the weight ratio of 1:0.5 by hexaconazole and thifluxamide, and each raw material dosage is specifically shown in Table 1, and its processing operation Specifically:

[0039]1) Weigh each raw material by weight, divide the solvent into solvent a and solvent b, wherein the amount of solvent a is 1.05 times of the active ingredient, and set aside;

[0040] 2) Slowly add the active ingredient to the solvent a, keep stirring during the process, and control the rotation speed to 600r / min, and after stirring for 8 minutes, the mixed solution a is obtained;

[0041] 3) Add lignin dispersant, polyvinyl alcohol, and defoamer to solvent b in sequence, stir and mix them, put them into a reactor at 3000r / min and mix for 5 minutes, and prepare mixed solution b;

[0042] 4) Slowly pour the mixed solution a into the mixed solution b, control th...

Embodiment 2-4

[0046] The pesticide composition of Examples 2-4 is different from that of Example 1 in the amount of raw materials, as shown in Table 1 for details, and the rest are the same as in Example 1.

[0047] Raw material composition and consumption of pesticide composition in the embodiment 1-4 of table 1

[0048]

Embodiment 5-8

[0050] The pesticide composition of Examples 5-8 is different from that of Example 1 in the amount of raw materials, as shown in Table 2 for details, and the rest are the same as in Example 1.

[0051] Raw material composition and consumption of pesticide composition in table 2 embodiment 5-8

[0052]

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Abstract

The invention relates to a pesticide composition for preventing and treating sheath blight as well as a preparation method and application thereof. The pesticide composition is prepared from the following raw materials in percentage by weight: 25%-45% of an active component, 2.5%-4.5% of a lignin dispersing agent, 0.2%-2.5% of polyvinyl alcohol, 0.1%-0.23% of a defoaming agent and the balance of asolvent, totaling 100%, wherein the active components comprise hexaconazole and thifluzamide, and the weight ratio of hexaconazole to thifluzamide is 1: 20-1: 0.5; and polyvinyl alcohol is medical-grade. The addition of the medical-grade polyvinyl alcohol makes the active components not easy to agglomerate, so the dispersibility of the active components is improved, and the prepared pesticide composition is more stable. According to the preparation method of the pesticide composition, a solvent (a) is pre-prepared with the active components, and a solvent (b) is mixed with the lignin dispersing agent and polyvinyl alcohol to form a dispersion system, so that the active components is uniformly and stably dispersed in the formula system under high-speed shearing. The pesticide composition is compounded with water and then acts on crops such as rice, so that rice sheath blight can be prevented and treated, and the crops can grow normally.

Description

technical field [0001] The invention relates to the technical field of pesticide compositions, in particular to a pesticide composition for preventing and treating sheath blight and its preparation method and application. Background technique [0002] Rice is an important food crop, and its safe production affects the long-term stability of the country. Rice production is often disturbed by many factors, such as temperature, light, nutrition, pests and weeds, etc. Among them, rice sheath blight is one of the important factors leading to rice yield reduction. Sheath blight is a fungal disease caused by Rhizoctonia solani. It can occur from the seedling stage to the earing stage of rice. It mainly infects the base leaf sheaths of rice at the end of tillering and the end of earing, forming irregular "Moiré-like" lesions make the leaves of rice dry, the stems are easy to break, and eventually the earing cannot be done, or there are more grains in the earing, and the grain weigh...

Claims

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Application Information

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IPC IPC(8): A01N47/02A01N43/653A01P3/00
CPCA01N43/653A01N47/02
Inventor 夏雨王从爱王蕾王翔刘会涛
Owner SHANDONG BIO BIOTECH