A coating agent for red-feathery sorghum seeds

Abstract

The application discloses a coating agent for red plume sorghum seeds. The application aims at the problems of low germination rate, weak resistance and poor growth in the process of planting red plume sorghum, and provides a coating agent for sorghum seeds, which can significantly promote the germination and seedling of the sorghum seeds, the germination rate reaches 78% on the fifth day, the seedling rate reaches 84% on the eighth day, and the mildewing condition is significantly reduced, and the obtained plants have thick roots and stems and strong stress resistance. The coating agent can effectively promote the yield and income increase of Guizhou sorghum industry.

Description

TECHNICAL FIELD

[0001] The present application relates to a red plume sorghum seed coating agent, belonging to the field of agricultural technology. BACKGROUND

[0002] Sorghum is the fifth largest cereal in the world, and has the dual functions of food security and energy raw material, and is the core of the liquor industry. Its drought resistance and salt tolerance make it a strategic crop for ensuring agricultural production in arid areas under the background of climate change. In the field of liquor making, the starch content (60%-70%) and tannin ratio of sorghum directly determine the quality of liquor, especially the high-quality sorghum must be used as raw material for Maotai-flavor liquor, such as Guizhou Maotai liquor, which accounts for 100% of the raw material.

[0003] Sorghum is one of the important economic crops in Guizhou, but due to the fact that the soil in Guizhou is mainly yellow soil, the content of organic matter and available nitrogen is low, and the rainfall distribution in Guizhou is uneven, seasonal drought exists in some areas, which leads to the fact that the output of sorghum in Guizhou province cannot meet the demand of liquor making, and it needs to be purchased at high price from the northeast or imported and transported, resulting in high production cost of liquor enterprises. Therefore, cultivating excellent and high-yield sorghum crops under adverse conditions is a problem that needs to be solved at present.

[0004] At present, the sorghum seed has the problems of low germination rate and low viability, which ultimately leads to low field seedling rate, slow growth of seedlings, and ultimately affects the yield of sorghum. Therefore, increasing the germination vigor and resistance of sorghum is beneficial to its cultivation and application under adverse conditions. During the germination process of sorghum seeds, a coating agent is usually added to promote germination. The current market coating agent still has the following problems: first, excessive reliance on chemical synthetic coating agents (such as thiamethoxam), and chemical synthetic coating agents are easy to accumulate in seeds, resulting in inhibition of the activity of liquor fermentation microorganisms. Second, traditional organic coating agents (such as chitosan) have weak stress resistance, and the control efficiency of sorghum smut is less than 60%, and the loss rate of seedling diseases is 20%-30%. Traditional emulsion type coating causes soil microplastic pollution, which has ecological risks. In addition, diatomite film isolation bacteria are used as coating agents, but the film has poor air permeability, which hinders the aerobic respiration of seeds and delays germination for 24-48h. SUMMARY

[0005] In view of the problems of low germination rate, weak resistance and poor growth in the process of red plume sorghum planting, the present application provides a new coating technology to ensure uniform and strong seedlings in the early stage of red plume sorghum planting, and to promote the yield and income of Guizhou sorghum industry.

[0006] The present application is achieved by the following technical solutions:

[0007] The first object of the present application is to provide a red plume sorghum seed coating agent, which comprises the following ingredients: nano selenium, nano zinc oxide, chitosan, bacillus thuringiensis, ningnanmycin, humic acid, tea saponin and polyglutamic acid.

[0008] In one embodiment of the present application, the coating agent is prepared by adding nano-selenium, nano-zinc oxide, chitosan, Bacillus thuringiensis, ningnanmycin, humic acid, tea saponin and polyglutamic acid into water to prepare a preliminary solution at the following concentrations: 50-150 μg / L nano-selenium, 40-60 mg / L nano-zinc oxide, 5-15 g / L chitosan, 0.5-1.5 g / L Bacillus thuringiensis, 1-2 g / L ningnanmycin, 0.4-0.6 g / L humic acid, 0.5-1 g / L tea saponin and 0.3-0.5 g / L polyglutamic acid.

[0009] In one embodiment of the present application, the coating agent further comprises a film-forming agent.

[0010] In one embodiment of the present application, the film-forming agent is xanthan gum.

[0011] In one embodiment of the present application, the xanthan gum is added in an amount of 25-35 g / L relative to the preliminary solution.

[0012] In one embodiment of the present application, the coating agent further comprises a pigment.

[0013] In one embodiment of the present application, the pigment is beet red.

[0014] In one embodiment of the present application, the beet red is added in an amount of 6-8 g / L relative to the preliminary solution.

[0015] In one embodiment of the present application, the coating agent is prepared by adding nano-selenium, nano-zinc oxide, chitosan, Bacillus thuringiensis, ningnanmycin, humic acid, tea saponin and polyglutamic acid into water to prepare a preliminary solution at the following concentrations: 50-150 μg / L nano-selenium, 40-60 mg / L nano-zinc oxide, 5-15 g / L chitosan, 0.5-1.5 g / L Bacillus thuringiensis, 1-2 g / L ningnanmycin, 0.4-0.6 g / L humic acid, 0.5-1 g / L tea saponin and 0.3-0.5 g / L polyglutamic acid; after the preliminary solution is prepared, a pigment is added at a concentration of 6-8 g / L and a film-forming agent is added at a concentration of 25-35 g / L to prepare the red broom corn seed coating agent.

[0016] A second object of the present application is to provide the use of the red broom corn seed coating agent in the germination of red broom corn seeds.

[0017] The present application has the following advantages:

[0018] The present application aims at the problems of low germination rate, weak resistance and poor growth in the planting process of Hongyingzi sorghum, and provides a sorghum seed coating agent, which can significantly promote the germination and seedling of sorghum seeds, the germination rate reaches 78% on the fifth day, the seedling rate reaches 84% on the eighth day, and the moldy situation is significantly reduced, and the obtained plant roots and stems are thick and strong in stress resistance. The coating agent provided by the present application can effectively promote the yield and income of Guizhou sorghum industry. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0020] Figure 1 The growth of the blank control group plants;

[0021] Figure 2 The growth of the plants in Example 1;

[0022] Figure 3 The growth of the plants in Example 1 and Comparative Example 1, wherein (1) is Example 1, and (2) is Comparative Example 1;

[0023] Figure 4 The effect of nano-selenium and nano-zinc oxide on the salt resistance of Hongyingzi sorghum;

[0024] Figure 5 The effect of nano-selenium and nano-zinc oxide on the drought resistance of Hongyingzi sorghum;

[0025] Figure 6 The effect of nano-selenium and nano-zinc oxide on the chlorophyll and nitrogen of Hongyingzi sorghum. DETAILED DESCRIPTION

[0026] The present application will be further described below in combination with specific examples. These examples are only used to illustrate the present application and not used to limit the scope of the present application. In addition, after reading the content taught by the present application, those skilled in the art can make various modifications or changes to the present application, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0027] Raw material sources

[0028] Sorghum seeds: Guizhou Maotai Distillery (Group) Hongyingzi Agricultural Science and Technology Development Co., Ltd.; Sorghum seeds often delay germination due to hard seed coat or physiological dormancy, so first soak in water at 40℃ for 1 hour to soften the seed coat. Soaking can soften the seed coat and activate the internal enzyme activity of the seed, so that the germination time is shortened by 30%-50%.

[0029] Nano selenium: Sichuan Kaji Kun Technology Co., Ltd.;

[0030] Nano zinc oxide: Sichuan Kaji Kun Technology Co., Ltd.;

[0031] Chitosan: Zhuomeida Food Trading Company;

[0032] Bacillus thuringiensis: Shandong Lu Kang Biological Pesticide Co., Ltd.;

[0033] Ningnanmycin: Lidong Agriculture;

[0034] Humic acid: Shaanxi Juting Crop Protection Co., Ltd.;

[0035] Tea saponin: Haitang Food Science and Technology Museum;

[0036] Polyglutamic acid: Fulite Biological Technology Co., Ltd.;

[0037] Xanthan gum: Inner Mongolia Fufeng Biological Technology Co., Ltd.;

[0038] Pigment: Shandong Yuezhong Food Co., Ltd.

[0039] The technical solutions of the present application will be described in detail below in combination with specific examples. In the following examples, unless otherwise specified, the reagents, materials and equipment used can be purchased from commercial channels, or prepared by conventional methods, or commonly used in the industry.

[0040] Example 1

[0041] In this embodiment, the coating agent is prepared by adding nano selenium, nano zinc oxide, chitosan, bacillus thuringiensis, ningnanmycin, humic acid, tea saponin and polyglutamic acid into water at the following concentrations to prepare a preliminary solution: 100 μg / L nano selenium, 50 mg / L nano zinc oxide, 10 g / L chitosan, 1 g / L bacillus thuringiensis, 1.25 g / L ningnanmycin, 0.5 g / L humic acid, 0.75 g / L tea saponin and 0.4 g / L polyglutamic acid; after the preliminary solution is prepared, beet red pigment is added at a concentration of 7 g / L, and film-forming agent xanthan gum is added at a concentration of 30 g / L to prepare a coating agent that can be directly coated on the surface of the seed to form a film.

[0042] Example 2

[0043] The coating agent of the present example is prepared by adding nano selenium, nano zinc oxide, chitosan, bacillus thuringiensis, ningnanmycin, humic acid, tea saponin and polyglutamic acid into water according to the following concentrations: 120 μg / L nano selenium, 40 mg / L nano zinc oxide, 15 g / L chitosan, 2 g / L bacillus thuringiensis, 1.5 g / L ningnanmycin, 0.2 g / L humic acid, 0.75 g / L tea saponin and 0.4 g / L polyglutamic acid; after the preparation solution is prepared, beet red pigment is added according to a concentration of 7 g / L, and film-forming agent xanthan gum is added according to a concentration of 30 g / L, to prepare a coating agent that can be directly coated on the surface of seeds to form a film.

[0044] Example 3:

[0045] The coating agent of the present example is prepared by adding nano selenium, nano zinc oxide, chitosan, bacillus thuringiensis, ningnanmycin, humic acid, tea saponin and polyglutamic acid into water according to the following concentrations: 80 μg / L nano selenium, 60 mg / L nano zinc oxide, 8 g / L chitosan, 1 g / L bacillus thuringiensis, 1.25 g / L ningnanmycin, 0.8 g / L humic acid, 0.75 g / L tea saponin and 0.4 g / L polyglutamic acid; after the preparation solution is prepared, beet red pigment is added according to a concentration of 7 g / L, and film-forming agent xanthan gum is added according to a concentration of 30 g / L, to prepare a coating agent that can be directly coated on the surface of seeds to form a film.

[0046] Comparative Example 1:

[0047] The coating agent of the present example is prepared by adding nano selenium, nano zinc oxide, chitosan, bacillus thuringiensis, ningnanmycin, humic acid, tea saponin and polyglutamic acid into water according to the following concentrations: 80 μg / L nano selenium, 60 mg / L nano zinc oxide, 8 g / L chitosan, 1 g / L bacillus thuringiensis, 1.25 g / L ningnanmycin, 0.8 g / L humic acid, 0.75 g / L tea saponin and 0.4 g / L polyglutamic acid; after the preparation solution is prepared, beet red pigment is added according to a concentration of 7 g / L, and film-forming agent xanthan gum is added according to a concentration of 30 g / L, to prepare a coating agent that can be directly coated on the surface of seeds to form a film.

[0048] Comparative Example 2:

[0049] The coating agent of the present comparative example is prepared by adding nano selenium, nano zinc oxide, chitosan, Bacillus thuringiensis, humic acid, tea saponin and polyglutamic acid into water according to the following concentrations to prepare a preliminary solution: 100 μg / L nano selenium, 50 mg / L nano zinc oxide, 10 g / L chitosan, 1 g / L Bacillus thuringiensis, 0.5 g / L humic acid, 0.75 g / L tea saponin and 0.4 g / L polyglutamic acid; after the preliminary solution is prepared, beet red pigment is added according to a concentration of 7 g / L, and a film-forming agent xanthan gum is added according to a concentration of 30 g / L, to prepare a coating agent that can be directly coated on the surface of seeds to form a film. Compared with the formula of Example 1, ningnanmycin is not added.

[0050] Comparative Example 3:

[0051] The coating agent of the present comparative example is prepared by adding nano selenium, nano zinc oxide, chitosan, Bacillus thuringiensis, humic acid, tea saponin and polyglutamic acid into water according to the following concentrations to prepare a preliminary solution: 100 μg / L nano selenium, 50 mg / L nano zinc oxide, 10 g / L chitosan, 1 g / L Bacillus thuringiensis, 0.5 g / L humic acid, 0.75 g / L tea saponin and 0.4 g / L polyglutamic acid; after the preliminary solution is prepared, beet red pigment is added according to a concentration of 7 g / L, and a film-forming agent xanthan gum is added according to a concentration of 30 g / L, to prepare a coating agent that can be directly coated on the surface of seeds to form a film. Compared with the formula of Example 1, ningnanmycin is not added.

[0052] Comparative Example 4:

[0053] The coating agent of the present comparative example is prepared by adding nano selenium, nano zinc oxide, chitosan, Bacillus thuringiensis, humic acid, tea saponin and polyglutamic acid into water according to the following concentrations to prepare a preliminary solution: 100 μg / L nano selenium, 50 mg / L nano zinc oxide, 10 g / L chitosan, 1 g / L Bacillus thuringiensis, 0.5 g / L humic acid, 0.75 g / L tea saponin and 0.4 g / L polyglutamic acid; after the preliminary solution is prepared, beet red pigment is added according to a concentration of 7 g / L, and a film-forming agent xanthan gum is added according to a concentration of 30 g / L, to prepare a coating agent that can be directly coated on the surface of seeds to form a film. Compared with the formula of Example 1, ningnanmycin is not added.

[0054] Comparative Example 5:

[0055] The coating agent of the present example is prepared by adding nano selenium, nano zinc oxide, chitosan, Bacillus thuringiensis, ningnanmycin, humic acid and tea saponin into water according to the following concentrations: 100 μg / L nano selenium, 50 mg / L nano zinc oxide, 10 g / L chitosan, 1 g / L Bacillus thuringiensis, 1.25 g / L ningnanmycin, 0.5 g / L humic acid and 0.75 g / L tea saponin; after the preparation solution is prepared, beet red pigment is added according to a concentration of 7 g / L, and film-forming agent xanthan gum is added according to a concentration of 30 g / L, to prepare a coating agent that can be directly coated on the surface of seeds to form a film. Compared with the formula of Example 1, polyglutamic acid is not added.

[0056] Comparative Example 6:

[0057] The coating agent of the present example is prepared by adding nano selenium, nano zinc oxide, chitosan, Bacillus thuringiensis, ningnanmycin, humic acid and polyglutamic acid into water according to the following concentrations: 100 μg / L nano selenium, 50 mg / L nano zinc oxide, 10 g / L chitosan, 1 g / L Bacillus thuringiensis, 1.25 g / L ningnanmycin, 0.5 g / L humic acid and 0.4 g / L polyglutamic acid; after the preparation solution is prepared, beet red pigment is added according to a concentration of 7 g / L, and film-forming agent xanthan gum is added according to a concentration of 30 g / L, to prepare a coating agent that can be directly coated on the surface of seeds to form a film. Compared with the formula of Example 1, tea saponin is not added.

[0058] Test Example:

[0059] The coating agents prepared in Examples 1-3 and Comparative Examples 1-6 are used for germination of red silk sorghum seeds. The specific method is as follows:

[0060] (1) Normal germination experiment: red silk sorghum seeds (purity ≥98%) are selected as the research object, and a triple repeat randomized block design is used. The coating agents prepared in Examples 1-3 and Comparative Examples 1-6 are used for germination of red silk sorghum seeds, and a conventional water culture is set as a blank control example. The amount of water added during conventional water culture is 10 mL, and the coating agents prepared in Examples 1-3 and Comparative Examples 1-6 are added according to a system of 10 mL. Each group contains 100 seeds, which are soaked for 15 minutes and then placed in a constant temperature incubator (24±1℃, humidity 70%). The germination rate (both stem and root break through the seed coat and the root length plus stem length ≥ the length of the seed itself) on the 2nd-5th day, the seedling rate (the bud part is obviously green and the stem length ≥ 1 / 2 of the root length) on the 3rd-5th day, and the root length, stem length, fresh weight and dry weight on the 10th day are recorded.

[0061]

[0062]

[0063] The results of Table 1 show that when the coating agents of Examples 1-3 are used for the germination of sorghum seeds, the mold condition can be significantly reduced, and the germination rate and seedling rate can be significantly improved, and the roots and stems of the grown plants are thick and strong. In Comparative Example 1, Bacillus thuringiensis is not added, and during the cultivation process, the seed mold condition is more serious, which further affects the growth of the subsequent plants; in Comparative Example 2, no ningnanmycin is added, and the germination rate and seedling rate are affected to a certain extent, while in Example 1, the addition of a suitable concentration of ningnanmycin treatment promotes the germination rate of sorghum seeds, and the possible reason is that ningnanmycin contains various amino acids, vitamins and trace elements, which can regulate and stimulate crop growth. In addition, after the treatment of ningnanmycin, the plants can effectively prevent and treat various crop viral diseases caused by tobacco mosaic virus and the like, because ningnanmycin can bind to viral coat proteins to destroy the structure of the virus. In Comparative Examples 3 and 4, no nano-selenium and nano-zinc oxide are added, and the germination rate and root stem growth are significantly reduced. Nano-selenium can significantly alleviate the oxidative damage during the seed germination period by activating the SOD and POD antioxidant enzyme system, and the use of nano-zinc oxide can significantly improve the germination rate and seedling rate, and promote the growth of seedlings. In Comparative Example 5, the addition of polyglutamic acid has little effect on the germination rate and plant growth, but the carboxyl group (-COOH) in the molecular structure of polyglutamic acid can form a chelate with calcium, magnesium and other cations in the soil to reduce nutrient loss and improve nutrient availability. As a hydrophilic group, it can also absorb and retain a large amount of water, form soil aggregate structure, and improve soil water retention capacity, thereby enhancing the drought resistance of crops. In Comparative Example 6, the addition of tea saponin has a certain effect on seed germination and seedling, and a suitable concentration of tea saponin may help to activate the related enzyme activity in the seed, promote the transformation and absorption of nutrients, thereby improving the seed germination rate and seedling rate, and having a certain promoting effect on the early growth of sorghum seeds.

[0064] Bacillus thuringiensis and the coating agents of Example 1 and Comparative Example 1 were subjected to antibacterial experiments: three groups of experiments were set up: (1) Bacillus thuringiensis was added to water according to an addition amount of 1 g / L, and beet red pigment was added according to a concentration of 7 g / L, and film-forming agent xanthan gum was added according to a concentration of 30 g / L, to prepare a Bacillus thuringiensis coating agent; (2) the coating agent prepared in Example 1; (3) the coating agent prepared in Comparative Example 1; through plate culture method: the target pathogenic fungus Colletotrichum gloeosporioides was inoculated uniformly in an agar plate. Different groups of coating agents were added, and cultured for 24 hours, and the number of colonies in each group was counted, and the antibacterial rate was calculated according to the following formula:

[0065]

[0066] The results are shown in Table 2, and it is found that in the coating agent without the addition of Bacillus thuringiensis, the antibacterial rate of the coating agent decreases a lot, and cannot have a good antibacterial effect.

[0067] Table 2

[0068] Bacillus thuringiensis Example 1 Comparative Example 1 Bacteriostatic rate (%) 15.73±0.01 14.78±0.215 9.34±0.176

[0069] (2) Stress germination experiment

[0070] Drought and salt stress are two major abiotic stresses suffered by red silk sorghum during cultivation. To explore whether nano selenium and nano zinc oxide can significantly improve the salt and drought resistance of red silk sorghum, salt and drought simulation experiments were designed respectively.

[0071] Salt resistance: To simulate the typical saline-alkali environment, four groups of experiments were designed, namely CK group, 150 mM NaCl stress; Se group, 150 mM NaCl stress + Comparative Example 4; Zn group, 150 mM NaCl stress + Comparative Example 3; Se+Zn group, 150 mM NaCl stress + Example 1, each group containing 3 biological replicates, 50 seeds per replicate. After coating treatment, the seeds were placed in a light incubator and observed. At the end of the experiment, the germination rate, seedling survival rate and chlorophyll content (SPAD value) were determined, and the results are shown in Table 3. Figure 4

[0072] From the germination and seedling rate, the germination rate of Se+Zn group reached 82%, which was 20.6% higher than that of CK group (68%); the seedling survival rate increased from 54% of CK group to 78%. In single factor treatment, the germination rate of Se group was 75%, and that of Zn group was 71%, indicating that nano selenium had more significant effect on salt stress relief. By observing the physiological indicators, the SPAD value of Se+Zn group was 38.2, which was 44.2% higher than that of CK group (26.5), and was significantly higher than that of single factor treatment (Se group 32.1, Zn group 30.8).

[0073] Drought resistance: Simulated drought stress was used, and four groups of treatments were set (CK, Se, Zn, Se+Zn, i.e. 10% PEG-6000 + blank control group, 10% PEG-6000 + Comparative Example 4, 10% PEG-6000 + Comparative Example 3, 10% PEG-6000 + Example 1), and the experimental conditions were the same as those of salt stress. The relative water content (RWC) of leaves, stomatal conductance (Gs) and photosynthetic rate (Pn) were additionally determined, and the results are shown in Table 4. Figure 5

[0074] In terms of germination and water utilization, the germination rate of Se+Zn group was 76%, which was 31.0% higher than that of CK group (58%); the leaf RWC reached 73.5%, which was 39.2% higher than that of CK group (52.8%). And in single factor treatment, the germination rate of Se group was 68%, and that of Zn group was 63%, again demonstrating the strong effectiveness of nano selenium.

[0075] ​​Salt tolerance: In addition to germination experiment, we also detected how nano selenium and nano zinc oxide affect the growth of red silk sorghum under salt stress in the seedling stage. As shown in Figure 6 Figure 6, by observing the growth of seedlings and measuring the chlorophyll content and nitrogen content, it was found that nano selenium and nano zinc oxide could improve the growth of red silk sorghum seedlings under salt stress. Nano selenium and nano zinc oxide synergistically regulate ion balance, osmotic regulation and antioxidant defense system, significantly improve the adaptability of red silk sorghum to salt and drought stress, and the effect of composite treatment is much better than that of single material application.

[0076] The above provided examples are not intended to limit the scope covered by the present application, and the described steps are not intended to limit the execution order. Those skilled in the art can make obvious improvements to the present application in combination with existing common knowledge, which also falls within the protection scope defined by the claims of the present application.

Claims

1. Use of a red-feathery sorghum seed coating agent in the germination of red-feathery sorghum seeds, characterized in that, The coating agent comprises the following ingredients: nano selenium, nano zinc oxide, chitosan, Bacillus thuringiensis, ningnanmycin, humic acid, tea saponin and polyglutamic acid. The coating agent is prepared by adding nano selenium, nano zinc oxide, chitosan, Bacillus thuringiensis, ningnanmycin, humic acid, tea saponin and polyglutamic acid into water in the following concentrations: 50-150 μg / L of nano selenium, 40-60 mg / L of nano zinc oxide, 5-15 g / L of chitosan, 0.5-1.5 g / L of Bacillus thuringiensis, 1-2 g / L of ningnanmycin, 0.4-0.6 g / L of humic acid, 0.5-1 g / L of tea saponin and 0.3-0.5 g / L of polyglutamic acid. The coating agent further comprises xanthan gum, and the addition amount of the xanthan gum relative to the prepared solution is 25-35 g / L.

2. Use according to claim 1, characterized in that, The coating agent further comprises a pigment.

3. Use according to claim 2, characterized in that, The pigment is beet red.

4. Use according to claim 3, characterized in that, The addition amount of the beet red relative to the prepared solution is 6-8 g / L.

5. The use according to any one of claims 1 to 4, characterized in that, The coating agent is prepared by adding nano selenium, nano zinc oxide, chitosan, Bacillus thuringiensis, ningnanmycin, humic acid, tea saponin and polyglutamic acid into water in the following concentrations: 50-150 μg / L of nano selenium, 40-60 mg / L of nano zinc oxide, 5-15 g / L of chitosan, 0.5-1.5 g / L of Bacillus thuringiensis, 1-2 g / L of ningnanmycin, 0.4-0.6 g / L of humic acid, 0.5-1 g / L of tea saponin and 0.3-0.5 g / L of polyglutamic acid; after the prepared solution is prepared, the pigment is added in a concentration of 6-8 g / L, and the xanthan gum is added in a concentration of 25-35 g / L, so as to prepare the red plume sorghum seed coating agent.

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