阅读说明：本技术 一种防治小麦赤霉病的硒抑制剂及其制备和应用 (Selenium inhibitor for preventing and treating wheat scab and preparation and application thereof ) 是由 王晓丽 王张民 刘志奎 张泽州 宋佳平 林锦钰 孙辰璐 张宁 于 2020-12-31 设计创作，主要内容包括：本发明涉及一种防治小麦赤霉病的硒抑制剂及其制备方法。所述制剂中的组分包括硒源、生根剂和水,以1L计,生根剂0.002L,水0.96～0.998L,硒源含量为0.5～2mg。本发明硒抑制剂的制备方法,包括以下步骤：配料选取硒源、生根剂和水,将硒源、生根剂、水混合得到硒抑制剂。本发明以硒源为主要有效成分制备的抑制剂,通过硒对病原菌的抑制作用和对植物体内抗氧化能力的提高,显著增强小麦赤霉病的抗性,本发明制剂防治小麦赤霉病操作简单易行,成本较低,可显著延迟和抑制赤霉病菌的生长及病害的扩散,大大降低赤霉病的发病率。(The invention relates to a selenium inhibitor for preventing and treating wheat scab and a preparation method thereof. The preparation comprises the components of a selenium source, a rooting agent and water, wherein the rooting agent accounts for 0.002L and the water accounts for 0.96-0.998L in terms of 1L, and the content of the selenium source is 0.5-2 mg. The preparation method of the selenium inhibitor comprises the following steps: the ingredients are selected from a selenium source, a rooting agent and water, and the selenium source, the rooting agent and the water are mixed to obtain the selenium inhibitor. The inhibitor prepared by taking the selenium source as the main effective component obviously enhances the resistance of wheat scab by inhibiting pathogenic bacteria and improving the oxidation resistance in plant bodies through selenium.)

1. The selenium inhibitor for preventing and treating wheat scab is characterized by comprising a selenium source, a rooting agent and water, wherein the rooting agent accounts for 0.002L, the water accounts for 0.96-0.998L and the content of the selenium source is 0.5-2 mg in 1L.

2. The selenium inhibitor for controlling wheat scab according to claim 1, wherein the rooting agent is one of indoleacetic acid and sodium naphthaleneacetate.

3. The selenium inhibitor for controlling wheat scab according to claim 1, wherein said selenium source is one of selenium-containing compounds.

4. The selenium inhibitor for preventing and treating wheat scab as claimed in claim 2, wherein said selenium source is one of selenite and nano-selenium.

5. The selenium inhibitor for controlling wheat scab according to claim 1, further comprising polyacrylamide dry powder.

6. A preparation method of a selenium inhibitor for preventing and treating wheat scab is characterized by comprising the following steps: the ingredients are selected from a selenium source, a rooting agent and water, wherein the total amount of the rooting agent and the water is 0.002L and 0.96-0.998L respectively in terms of 1L, and the adding amount of the selenium source is 0.5-2 mg; mixing selenium source, rooting agent and water to obtain selenium inhibitor.

7. The method for preparing the selenium inhibitor for preventing and treating wheat scab as claimed in claim 6, wherein the ingredients further comprise polyacrylamide dry powder, the addition amount is 0.01 g; and mixing a selenium source, polyacrylamide dry powder, a rooting agent and water to obtain the selenium inhibitor.

8. Use of a selenium inhibitor for the control of wheat scab according to any one of claims 1 to 5 applied to the soil surrounding the root system of wheat crops.

9. The use of a selenium inhibitor for the control of wheat scab as claimed in claim 8, wherein: spraying from the flowering period of wheat for 1-2 times, wherein the spraying is carried out at intervals of 7 days when the spraying is carried out for 2 times.

10. The use of a selenium inhibitor for the control of wheat scab as claimed in claim 5, wherein: and uniformly scattering the polyacrylamide dry powder on the soil surface around the root system of the wheat after the selenium inhibitor is applied to the root.

Technical Field

The invention relates to a selenium inhibitor for preventing and treating wheat scab and a preparation method and application thereof, belonging to the technical field of plant protection.

Background

Wheat is one of three grains, is rich in starch, protein, fat and vitamins, is a main food source for human, can maintain the balance of nutrition of the body, and has important significance for human health. Scab is one of the most important diseases of wheat, and can be infected from the seedling stage to the ear stage to cause seedling rot, stem rot, stalk rot and ear rot, wherein the ear rot is the most harmful, diseased wheat contains toxins, poisoning can be caused after people and livestock eat the disease, huge loss is brought to agricultural products, and human health is harmed. At present, people mainly use antibacterial varieties, medicament seed dressing, chemical prevention and control and other measures to prevent and control the gibberellic disease, but the method has the defects of resource waste, large pollution and the like. Selenium has obvious inhibiting effect on the growth and the pathogenicity of pathogenic bacteria, has antioxidant effect on higher plants, can enhance the antioxidant capacity in plants, improve the stress resistance and the anti-aging capacity of the plants, ensure the normal growth of the plants and has important significance for solving the disease control.

At present, most of the control means of wheat scab are traditional medicament spraying, pesticide residue is easy to appear, the influence on human health is large, the control effect is poor, and few reports of selenium and polyacrylamide control of wheat scab exist in the prior art.

Disclosure of Invention

The invention aims to solve the technical problem of providing a selenium inhibitor for preventing and treating wheat scab, and reducing wheat diseases and damages to the environment and human health.

The invention also aims to solve the technical problem of providing a preparation method of the selenium inhibitor for preventing and treating wheat scab.

In order to solve the problems, the selenium inhibitor for preventing and treating wheat scab provided by the invention comprises a selenium source, a rooting agent and water, wherein the rooting agent accounts for 0.002L and the water accounts for 0.96-0.998L in terms of 1L, and the content of the selenium source is 0.5-2 mg.

Preferably, the rooting agent is one of indoleacetic acid and sodium naphthaleneacetate.

Preferably, the selenium source is one of selenium-containing compounds.

Preferably, the selenium source is one of selenite and nano-selenium.

More preferably, the preparation of the invention also comprises polyacrylamide dry powder, and the addition amount is 0.01 g.

The invention also discloses a preparation method of the selenium inhibitor for preventing and treating wheat scab, which comprises the following steps:

the ingredients are selected from a selenium source, a rooting agent and water, wherein the total amount of the rooting agent and the water is 0.002L and 0.96-0.998L respectively in terms of 1L, and the adding amount of the selenium source is 0.5-2 mg; mixing selenium source, rooting agent and water to obtain selenium inhibitor. Preferably, the ingredients also comprise polyacrylamide dry powder, and the addition amount of the polyacrylamide dry powder is 0.01 g.

The application of the selenium inhibitor for preventing and treating wheat scab provided by the invention is to apply the selenium inhibitor to soil around a root system of a wheat crop.

Preferably, the fertilizer is sprayed from the young wheat flowering period, wherein the spraying frequency is 1-2 times, and the spraying is carried out at intervals of 7 days when the fertilizer is sprayed for 2 times.

Preferably, the polyacrylamide dry powder is uniformly sprinkled on the soil surface around the root system of the wheat after the selenium inhibitor is applied to the root.

The selenium inhibitor for preventing and treating wheat scab can effectively kill pathogenic bacteria, has important significance for improving the stress resistance of plants, and has remarkable prevention and treatment effects; meanwhile, the problem of environmental pollution caused by spraying chemical agents is solved, and the spraying of the chemical agents is beneficial to human health. Meanwhile, the application of polyacrylamide can improve the utilization rate of selenium, improve the water and fertilizer retention capacity of soil, improve the permeability and drought resistance of soil, improve the soil environment and provide a good environment for the growth and development of wheat.

Detailed Description

The present invention is further described below in conjunction with specific examples to enable those skilled in the art to better understand the present invention and to practice it, but the examples are not intended to limit the present invention.

Example 1

A selenium inhibitor for preventing and treating wheat scab comprises the following components in parts by weight: 2mg of sodium selenite, counted as 1L, 0.002L of indoleacetic acid and 0.998L of water. According to the formula, the selenium source, the rooting agent and water are mixed to obtain the selenium inhibitor. From the wheat flowering period, the selenium inhibitor is sprayed to soil around roots for 1 time, and polyacrylamide dry powder is uniformly sprayed on the soil surface. Wheat sprayed with clear water was used as a control. After spraying, compared with a control group, the incidence rate of wheat scab is reduced by 45 percent in the spraying group.

Example 2

A selenium inhibitor for preventing and treating wheat scab comprises the following components in parts by weight: 2mg of nano selenium, 1L of nano selenium, 0.002L of sodium naphthaleneacetate and 0.998L of water. According to the formula, the selenium source, the rooting agent and water are mixed to obtain the selenium inhibitor. From the wheat flowering period, the inhibitor is sprayed to soil around roots for 1 time, and polyacrylamide dry powder is uniformly spread on the soil surface. Wheat sprayed with clear water was used as a control. After spraying, compared with a control group, the incidence rate of wheat scab is reduced by 48 percent in the spraying group.

Example 3

A selenium inhibitor for preventing and treating wheat scab comprises the following components in parts by weight: 1.5mg of sodium selenite, counted as 1L, 0.002L of indoleacetic acid and 0.998L of water. According to the formula, the selenium source, the rooting agent and water are mixed to obtain the selenium inhibitor. From the wheat flowering period, the inhibitor is sprayed to soil around roots for 1 time, and polyacrylamide dry powder is uniformly spread on the soil surface, and wheat sprayed with clear water is used as a control. After spraying, compared with a control group, the incidence rate of wheat scab is reduced by 42 percent in the spraying group.

Example 4

A selenium inhibitor for preventing and treating wheat scab comprises the following components in parts by weight: 1mg selenite, 1L, 0.002L rooting agent and 0.998L water. According to the formula, the selenium source, the rooting agent and water are mixed to obtain the selenium inhibitor. From the wheat flowering period, the selenium inhibitor is sprayed to the soil around the root system for 1 time, and polyacrylamide dry powder is uniformly spread on the soil surface, and the wheat sprayed with clear water is used as a control. After spraying, compared with a control group, the incidence rate of wheat scab is reduced by 37 percent in the spraying group.

Example 5

A selenium inhibitor for preventing and treating wheat scab comprises the following components in parts by weight: 1mg selenite, 1L, 0.002L rooting agent and 0.998L water. According to the formula, the selenium source, the rooting agent and water are mixed to obtain the selenium inhibitor. From the wheat flowering period, the selenium inhibitor is sprayed to the soil around the root system once every 7 days for 2 times, and polyacrylamide dry powder is uniformly spread on the soil surface, and the wheat sprayed with clear water is used as a control. After spraying, compared with a control group, the incidence rate of wheat scab is reduced by 38 percent in the spraying group.

Example 6

A selenium inhibitor for preventing and treating wheat scab comprises the following components in parts by weight: 1mg of nano-selenium, 1L of rooting agent 0.002L and water 0.998L. According to the formula, the selenium source, the rooting agent and water are mixed to obtain the selenium inhibitor. From the wheat flowering period, the inhibitor is sprayed to soil around roots for 1 time, and polyacrylamide dry powder is uniformly spread on the soil surface, and wheat sprayed with clear water is used as a control. After spraying, compared with a control group, the incidence rate of wheat scab is reduced by 46 percent in the spraying group.

Example 7

A selenium inhibitor for preventing and treating wheat scab comprises the following components in parts by weight: 1mg of nano-selenium, 1L of rooting agent 0.002L and water 0.998L. According to the formula, the selenium source, the rooting agent and water are mixed to obtain the selenium inhibitor. From the wheat flowering period, the selenium inhibitor is sprayed to the soil around the root system once every 7 days for 2 times, and polyacrylamide dry powder is uniformly spread on the soil surface, and the wheat sprayed with clear water is used as a control. After spraying, compared with a control group, the incidence rate of wheat scab is reduced by 46 percent in the spraying group.