Composite pelleting coating agent capable of resisting low-temperature stress and increasing yield for rape seeds and processing method of composite pelleting coating agent

Abstract

The invention discloses a low-temperature-stress-resistant and yield-increasing rape seed composite pelleting coating agent and a processing method. The coating agent comprises a filling agent, an adhesive and a low-temperature-stress-resistant and yield-increasing agent, grading and sieving rape seeds, screening, disinfecting and drying in the sun; preparing a pelletized filling material, and uniformly mixing attapulgite, talcum powder and bentonite to obtain pelletized powder; pouring the oilseed rape into a pelleting machine, weighing pelleting powder, averagely dividing the pelleting powder into two parts, adding a low-temperature stress resistant agent into one part, adding a yield increasing agent into the other part, pelleting the pellets containing the low-temperature stress resistant agent, and adding the pelleting powder containing the yield increasing agent until the pelleting preparation of the oilseed rape seeds is completed; closing a powder inlet bin and a water inlet switch, and adding a colored film-forming agent; and drying and screening the pelletized rape seeds. The coating agent provided by the invention can effectively protect rape seeds, improve seed germination and emergence rate, improve low-temperature stress resistance of rape, and realize yield and income increase of rape.

Description

Technical Field

[0001] This invention relates to the field of rapeseed treatment technology, and in particular to a compound pelleting coating agent for rapeseed that increases yield under low-temperature stress and its processing method. Background Technology

[0002] Rapeseed, as an important oilseed crop in my country, occupies a pivotal position in agricultural production. In the Yangtze River Basin, rapeseed cultivation often adopts rice-rapeseed rotation or corn-rapeseed rotation patterns. However, under this planting system, rapeseed growth faces multiple challenges. Taking the rice-rapeseed rotation area as an example, the tight crop rotation leads to widespread late sowing of rapeseed, and the overwintering period of the plants coincides with the low-temperature period in the Yangtze River Basin, resulting in frequent low-temperature stress and particularly prominent frost damage.

[0003] Low-temperature stress is mainly divided into two types. The first type is winter frost: low-temperature frost damage encountered before the beginning of spring, which is common in soil moisture freezing, causing root breakage and leaf damage. The second type is spring frost (late spring cold snap): low temperatures encountered after the beginning of spring during the budding or flowering period, causing the stem to burst and flower buds to fall off, resulting in more severe yield losses. In the early stages of low-temperature stress, the main manifestations are stiff leaves with scalded patches. In severe cases, the leaf tips wither and the outer leaves turn yellow. When the temperature drops below -7℃, the central leaves freeze, leading to the death of the entire plant.

[0004] The rise of seed pelleting technology has provided a new approach to addressing the aforementioned problems. This technology originated from seed film coating technology in developed countries in Europe and America in the 1960s. After decades of research and practice, it has formed a mature process system and equipment matching scheme, becoming an indispensable part of modern agriculture.

[0005] Its core principle is to coat the seed surface with one or more layers of "coating" containing active ingredients (i.e., seed coating agent) through a specially designed pelleting machine.

[0006] This seed coating agent typically contains insecticides, fungicides, compound fertilizers, trace elements, plant growth regulators, slow-release agents, and film-forming agents, which can not only change the shape and size of seeds, but also significantly improve their disease resistance, stress resistance, and germination rate.

[0007] Targeting the characteristics of rapeseed, pelleting technology processes it into uniform pellets with a diameter of 2-5 mm by adding binders, fillers and functional ingredients.

[0008] This process does not alter the biological characteristics of the seeds, but it can significantly optimize their physical properties and sowing adaptability. Specific advantages are as follows:

[0009] 1. Improved adaptability to mechanical sowing: Pelleted seeds are round and smooth with enhanced compressive strength, making them compatible with various sowing machines. For example, Northern Seed Industry has optimized seeding rate and row spacing parameters to achieve uniform sowing, significantly reducing missed sowing and double sowing, and promoting the mechanization of agriculture.

[0010] 2. Optimization of sowing efficiency and cost: Granulation increases seed volume, supports single-seed precision sowing, and reduces seed usage by 30%-50%; at the same time, it eliminates the thinning process, saves labor costs, and improves the uniformity of the population, laying the foundation for standardized cultivation.

[0011] 3. Significantly enhanced stress resistance: The fungicides and insecticides added to the pellets effectively control diseases and pests such as sclerotinia stem rot and aphids, reducing the incidence rate by more than 75%; the introduction of water-retaining agents and antifreeze proteins enhances the germination ability of seeds under low temperature and drought conditions. Experiments show that seeds treated with pelleting can still achieve a germination rate of over 85% at -5℃.

[0012] 4. Promotes seedling growth: The micronutrients, growth regulators, and humic acid incorporated into the pellets can stimulate root development and cultivate robust seedlings. For example, the coating treatment with fulvic acid and brown algae oligosaccharides significantly increased the dry matter accumulation of rapeseed during the overwintering period, and both plant height and root neck diameter were significantly improved.

[0013] However, its widespread application still faces bottlenecks; in recent years, the application of this technology has been limited, mainly due to the following reasons:

[0014] (1) Pelletization may affect seed germination and seedling quality;

[0015] (2) The control effect on common frost damage problems is not significant, and the final yield increase is not obvious;

[0016] (3) The pelletizing process requires a certain cost, but the difference between the benefits and the expenditures is not significant, resulting in poor technology promotion results.

[0017] Therefore, in order to solve the technical problems existing in the prior art, it is an urgent technical problem to be solved by those skilled in the art to provide a rapeseed compound pelleting coating agent and processing method that can effectively protect rapeseed seeds, improve the frost resistance of rapeseed plants, increase rapeseed yield and income, improve seed germination and seedling emergence rate, and improve the ability of rapeseed to resist low temperature stress. Summary of the Invention

[0018] In view of this, the present invention provides a compound pelleting coating agent for rapeseed that resists low temperature stress and increases yield, as well as a processing method.

[0019] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0020] A compound pelleting coating agent for rapeseed seeds to resist low-temperature stress and increase yield, wherein the compound pelleting coating agent includes a filler, a binder, and agents for resisting low-temperature stress and increasing yield; wherein...

[0021] The anti-low temperature stress is one or more of the following: amino acid ester, Verticillium dahliae activator protein, amino oligosaccharide, dihydroporphyrin iron, brassinolide, calcium peroxide, sodium alginate, and salicylic acid.

[0022] The yield-enhancing agent is one or more of boron fertilizer, trace element fertilizer, amino acid water-soluble fertilizer, humic acid, and trehalose-6-phosphate.

[0023] The filler is a mixture of attapulgite, talc, and bentonite;

[0024] The adhesive is any one of sodium carboxymethyl cellulose, methyl cellulose, and polyvinyl alcohol.

[0025] Preferably, the mass ratio of attapulgite, talc, and bentonite is 2~3:0.5~1:1.

[0026] Preferably, the adhesive is sodium carboxymethyl cellulose in an aqueous solution with a content of 1% to 1.5%.

[0027] Preferably, the resistance to low-temperature stress is provided by Verticillium dahliae activating protein and calcium peroxide, wherein the Verticillium dahliae activating protein is a 0.4% powder and the calcium peroxide is a 50% powder, and the ratio of its dosage to seed weight is 1~2:8~16:100.

[0028] Preferably, the yield enhancer is one of trehalose 6-phosphate or sodium alginate, wherein the trehalose 6-phosphate content is 0.1% powder and the sodium alginate content is 99% powder, and the dosage ratio to seed weight is 0.5~2:100.

[0029] A processing method for a compound pelleting coating agent for rapeseed to increase yield under low-temperature stress includes the following steps:

[0030] S1. Rapeseed pretreatment:

[0031] The rapeseed seeds are graded and sieved to select seeds of uniform size, and then disinfected and dried.

[0032] S2. Preparation of composite pelletized powder:

[0033] To prepare pelletized filler material, attapulgite, talc and bentonite are mixed evenly according to the mass ratio to obtain pelletized powder for later use.

[0034] S3. Pellet coating:

[0035] Pour the rapeseed into a rotary pelleting machine, weigh the pelleting powder according to the ratio and divide it into two equal parts. Add a low-temperature stress resistance agent to one part and a yield enhancer to the other part. Mix them thoroughly and evenly. First, add the pelleting powder containing the low-temperature stress resistance agent into the powder hopper of the machine for pelleting. After the powder is used up, add the pelleting powder containing the yield enhancer for processing until the rapeseed pelleting is completed.

[0036] S4. Add film-forming agent:

[0037] After step S3 is completed, turn off the powder inlet and water inlet switches, adjust the machine speed, and add a film-forming agent containing color.

[0038] S5. Dry storage:

[0039] After step S4 is completed, the rapeseed pelleted seeds are placed in a forced-air drying drum, the drying temperature is adjusted, and the seeds are dried by forced air. After drying, the pelleted coated seeds are passed through a mesh screen to remove seeds with incomplete pelleting and coating and dust. Qualified and plump seeds are selected and placed in mesh bags for later use.

[0040] Preferably, in step S2, the weight ratio of rapeseed seeds to pelleted powder is 1:1.5~2.

[0041] Preferably, in step S3, the pelletizing machine speed is 30~40 r / min, the powder feeding speed is 150~200 g / min, and the water intake during pelletizing is 15~20 mL / min.

[0042] Preferably, in step S4, the machine speed is adjusted to 10~20 r / min, and the ratio of the mass of the film-forming agent to the mass of the rapeseed is 1~2:20.

[0043] Preferably, in step S5, the drying temperature is adjusted to 35°C, and the seeds are dried by forced air for 1 hour. After drying, the pelleted and coated seeds are passed through an 8-mesh sieve.

[0044] The present invention achieves the following technical effects compared to the prior art:

[0045] The coating agent of this invention can effectively protect rapeseed seeds, improve the frost resistance of rapeseed plants, and increase rapeseed yield and income. It can also improve seed germination and seedling emergence rates and enhance the rapeseed's resistance to low-temperature stress. Attached Figure Description

[0046] Figure 1 The figures show the germination rate and emergence rate of rapeseed seeds in various embodiments and comparative examples of the present invention.

[0047] Figure 2 This is a field comparison image of rapeseed from an embodiment of the present invention and a naked-plant control;

[0048] Figure 3This is a comparison chart of the number of flowers and yield of rapeseed in the field between the embodiments of the present invention and the naked-species control. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] Example 1:

[0051] A processing method for a compound pelleting coating agent for rapeseed to increase yield under low-temperature stress includes the following steps:

[0052] S1: Sieve and grade the rapeseed seeds, remove poorly developed or broken seeds, remove stems and non-seed components, and weigh 200g of rapeseed seeds.

[0053] S2: Mix attapulgite, talc powder and bentonite in a mass ratio of 3:0.5:1 until uniform, weigh out 300g, accurately weigh out 10g of sodium carboxymethyl cellulose powder, add it to 1000mL of water and dissolve it completely to prepare a 1% sodium carboxymethyl cellulose aqueous solution.

[0054] S3: Add 200 g of rapeseed seeds to the feed hopper of the RH-325 seed pelleting machine, set the machine speed to 35 r / min, the powder feeding speed to 150 g / min, and the water feeding rate to 15 mL / min, and add 300 g of filling material from step S2 to the powder feeding hopper for pelleting and coating.

[0055] S4: After completing step S3, close the powder inlet and water inlet switches, adjust the machine speed to 15 r / min, add 10 g of red film-forming agent, rotate and color for 2 minutes, open the silo door, and collect the seeds.

[0056] S5: After step S4, place the rapeseed pelleted seeds in a forced-air drying drum, adjust the drying temperature to 35℃, and dry for 1 hour. After drying, pass the pelleted coated seeds through an 8-mesh sieve to remove seeds with incomplete pelleting and dust, and select qualified and plump seeds to put into a mesh bag for later use.

[0057] Example 2:

[0058] A processing method for a compound pelleting coating agent for rapeseed to increase yield under low-temperature stress includes the following steps:

[0059] S1: Sieve and grade the rapeseed seeds, remove poorly developed or broken seeds, remove stems and non-seed components, and weigh 200g of rapeseed seeds.

[0060] S2: Mix attapulgite, talc powder and bentonite in a mass ratio of 3:1:1 until uniform, weigh out 300 g, accurately weigh out 10 g of sodium carboxymethyl cellulose powder, add it to 1000 mL of water and dissolve it completely to prepare a 1% sodium carboxymethyl cellulose aqueous solution.

[0061] S3: Add 200 g of rapeseed seeds to the feed hopper of the RH-325 seed pelleting machine, set the machine speed to 35 r / min, the powder feeding speed to 150 g / min, and the water feeding rate to 15 mL / min, and add 300 g of filling material from step S2 to the powder feeding hopper for pelleting and coating.

[0062] S4: After completing step S3, close the powder inlet and water inlet switches, adjust the machine speed to 15 r / min, add 10 g of red film-forming agent, rotate and color for 2 minutes, open the silo door, and collect the seeds.

[0063] S5: After step S4, place the rapeseed pelleted seeds in a forced-air drying drum, adjust the drying temperature to 35℃, and dry for 1 hour. After drying, pass the pelleted coated seeds through an 8-mesh sieve to remove seeds with incomplete pelleting and dust, and select qualified and plump seeds to put into a mesh bag for later use.

[0064] Example 3:

[0065] A processing method for a compound pelleting coating agent for rapeseed to increase yield under low-temperature stress includes the following steps:

[0066] S1: Sieve and grade the rapeseed seeds, remove poorly developed or broken seeds, remove stems and non-seed components, and weigh 200g of rapeseed seeds.

[0067] S2: Mix attapulgite, talc powder and bentonite in a mass ratio of 2:1:1 until uniform, weigh out 300 g, accurately weigh out 10 g of sodium carboxymethyl cellulose powder, add it to 1000 mL of water and dissolve it completely to prepare a 1% sodium carboxymethyl cellulose aqueous solution.

[0068] S3: Add 200 g of rapeseed seeds to the feed hopper of the RH-325 seed pelleting machine, set the machine speed to 35 r / min, the powder feeding speed to 150 g / min, and the water feeding rate to 15 mL / min, and add 300 g of filling material from step S2 to the powder feeding hopper for pelleting and coating.

[0069] S4: After completing step S3, close the powder inlet and water inlet switches, adjust the machine speed to 15 r / min, add 10 g of red film-forming agent, rotate and color for 2 minutes, open the silo door, and collect the seeds.

[0070] S5: After step S4, place the rapeseed pelleted seeds in a forced-air drying drum, adjust the drying temperature to 35℃, and dry for 1 hour. After drying, pass the pelleted coated seeds through an 8-mesh sieve to remove seeds with incomplete pelleting and dust, and select qualified and plump seeds to put into a mesh bag for later use.

[0071] Example 4:

[0072] A processing method for a compound pelleting coating agent for rapeseed to increase yield under low-temperature stress includes the following steps:

[0073] S1: Sieve and grade the rapeseed seeds, remove poorly developed or broken seeds, remove stems and non-seed components, and weigh 200g of rapeseed seeds.

[0074] S2: Mix attapulgite, talc powder and bentonite in a mass ratio of 2:1:1 until uniform, weigh out 300 g, accurately weigh out 10 g of sodium carboxymethyl cellulose powder, add it to 1000 mL of water and dissolve it completely to prepare a 1% sodium carboxymethyl cellulose aqueous solution.

[0075] S3: Divide the mixed pellet powder in S2 into two equal parts. Add 2 g of 0.4% Dahlia verticillata activating protein powder and 16 g of 50% calcium peroxide powder to one part and mix thoroughly. Do not treat the other part.

[0076] S4: Add 200 g of rapeseed seeds to the feed hopper of the RH-325 seed pelleting machine. Set the machine speed to 35 r / min, the powder feeding speed to 150 g / min, and the water feeding rate to 15 mL / min. First, add the filler material containing the low temperature stress resistance agent to the powder feeding hopper for pelleting and coating. After the powder filling is completed, add another part of the filler for pelleting and coating again.

[0077] S5: After completing step S4, close the powder inlet and water inlet switches, adjust the machine speed to 15 r / min, add 10 g of red film-forming agent, rotate and color for 2 minutes, open the silo door, and collect the seeds.

[0078] S6: After step S5, place the rapeseed pelleted seeds in a forced-air drying drum, adjust the drying temperature to 35℃, and dry for 1 hour. After drying, pass the pelleted coated seeds through an 8-mesh sieve to remove seeds with incomplete pelleting and dust, and select qualified and plump seeds to put into a mesh bag for later use.

[0079] Example 5:

[0080] A processing method for a compound pelleting coating agent for rapeseed to increase yield under low-temperature stress includes the following steps:

[0081] S1: Sieve and grade the rapeseed seeds, remove poorly developed or broken seeds, remove stems and non-seed components, and weigh 200g of rapeseed seeds.

[0082] S2: Mix attapulgite, talc powder and bentonite in a mass ratio of 2:1:1 until uniform, weigh out 300 g, accurately weigh out 10 g of sodium carboxymethyl cellulose powder, add it to 1000 mL of water and dissolve it completely to prepare a 1% sodium carboxymethyl cellulose aqueous solution.

[0083] S3: Divide the mixed pellet powder in S2 into two equal parts. Add 3 g of 0.4% Dahlia verticillata activating protein powder + 24 g of 50% calcium peroxide powder to one part and mix thoroughly. Do not treat the other part.

[0084] S4: Add 200 g of rapeseed seeds to the feed hopper of the RH-325 seed pelleting machine. Set the machine speed to 35 r / min, the powder feeding speed to 150 g / min, and the water feeding rate to 15 mL / min. First, add the filler material containing the low temperature stress resistance agent to the powder feeding hopper for pelleting and coating. After the powder filling is completed, add another part of the filler for pelleting and coating again.

[0085] S5: After completing step S4, close the powder inlet and water inlet switches, adjust the machine speed to 15 r / min, add 10 g of red film-forming agent, rotate and color for 2 minutes, open the silo door, and collect the seeds.

[0086] S6: After step S5, place the rapeseed pelleted seeds in a forced-air drying drum, adjust the drying temperature to 35℃, and dry for 1 hour. After drying, pass the pelleted coated seeds through an 8-mesh sieve to remove seeds with incomplete pelleting and dust, and select qualified and plump seeds to put into a mesh bag for later use.

[0087] Example 6:

[0088] A processing method for a compound pelleting coating agent for rapeseed to increase yield under low-temperature stress includes the following steps:

[0089] S1: Sieve and grade the rapeseed seeds, remove poorly developed or broken seeds, remove stems and non-seed components, and weigh 200g of rapeseed seeds.

[0090] S2: Mix attapulgite, talc powder and bentonite in a mass ratio of 2:1:1 until uniform, weigh out 300 g, accurately weigh out 10 g of sodium carboxymethyl cellulose powder, add it to 1000 mL of water and dissolve it completely to prepare a 1% sodium carboxymethyl cellulose aqueous solution.

[0091] S3: Divide the mixed pellet powder in S2 into two equal parts. Add 4 g of 0.4% Dahlia verticillata activating protein powder + 32 g of 50% calcium peroxide powder to one part and mix thoroughly. Do not treat the other part.

[0092] S4: Add 200 g of rapeseed seeds to the feed hopper of the RH-325 seed pelleting machine. Set the machine speed to 35 r / min, the powder feeding speed to 150 g / min, and the water feeding rate to 15 mL / min. First, add the filler material containing the low temperature stress resistance agent to the powder feeding hopper for pelleting and coating. After the powder filling is completed, add another part of the filler for pelleting and coating again.

[0093] S5: After completing step S4, close the powder inlet and water inlet switches, adjust the machine speed to 15 r / min, add 10 g of red film-forming agent, rotate and color for 2 minutes, open the silo door, and collect the seeds.

[0094] S6: After step S5, place the rapeseed pelleted seeds in a forced-air drying drum, adjust the drying temperature to 35℃, and dry for 1 hour. After drying, pass the pelleted coated seeds through an 8-mesh sieve to remove seeds with incomplete pelleting and dust, and select qualified and plump seeds to put into a mesh bag for later use.

[0095] Example 7:

[0096] A processing method for a compound pelleting coating agent for rapeseed to increase yield under low-temperature stress includes the following steps:

[0097] S1: Sieve and grade the rapeseed seeds, remove poorly developed or broken seeds, remove stems and non-seed components, and weigh 200g of rapeseed seeds.

[0098] S2: Mix attapulgite, talc powder and bentonite in a mass ratio of 2:1:1 until uniform, weigh out 300 g, accurately weigh out 10 g of sodium carboxymethyl cellulose powder, add it to 1000 mL of water and dissolve it completely to prepare a 1% sodium carboxymethyl cellulose aqueous solution.

[0099] S3: Divide the mixed pellet powder in S2 into two equal parts. Do not process one part. Add 1 g of 0.01% trehalose 6-phosphate powder to the other part and mix thoroughly.

[0100] S4: Add 200 g of rapeseed seeds to the feed hopper of the RH-325 seed pelleting machine. Set the machine speed to 35 r / min, the powder feeding speed to 150 g / min, and the water feeding rate to 15 mL / min. First, add a portion of untreated filler material to the powder feeding hopper for pelleting and coating. After the powder filling is completed, add filler containing yield enhancer for pelleting and coating again.

[0101] S5: After completing step S4, close the powder inlet and water inlet switches, adjust the machine speed to 15 r / min, add 10 g of red film-forming agent, rotate and color for 2 minutes, open the silo door, and collect the seeds.

[0102] S6: After step S5, place the rapeseed pelleted seeds in a forced-air drying drum, adjust the drying temperature to 35℃, and dry for 1 hour. After drying, pass the pelleted coated seeds through an 8-mesh sieve to remove seeds with incomplete pelleting and dust, and select qualified and plump seeds to put into a mesh bag for later use.

[0103] Example 8:

[0104] A processing method for a compound pelleting coating agent for rapeseed to increase yield under low-temperature stress includes the following steps:

[0105] S1: Sieve and grade the rapeseed seeds, remove poorly developed or broken seeds, remove stems and non-seed components, and weigh 200g of rapeseed seeds.

[0106] S2: Mix attapulgite, talc powder and bentonite in a mass ratio of 2:1:1 until uniform, weigh out 300 g, accurately weigh out 10 g of sodium carboxymethyl cellulose powder, add it to 1000 mL of water and dissolve it completely to prepare a 1% sodium carboxymethyl cellulose aqueous solution.

[0107] S3: Divide the mixed pellet powder in S2 into two equal parts. Do not process one part. Add 2 g of 0.01% trehalose 6-phosphate powder to the other part and mix thoroughly.

[0108] S4: Add 200 g of rapeseed seeds to the feed hopper of the RH-325 seed pelleting machine. Set the machine speed to 35 r / min, the powder feeding speed to 150 g / min, and the water feeding rate to 15 mL / min. First, add a portion of untreated filler material to the powder feeding hopper for pelleting and coating. After the powder filling is completed, add filler containing yield enhancer for pelleting and coating again.

[0109] S5: After completing step S4, close the powder inlet and water inlet switches, adjust the machine speed to 15 r / min, add 10 g of red film-forming agent, rotate and color for 2 minutes, open the silo door, and collect the seeds.

[0110] S6: After step S5, place the rapeseed pelleted seeds in a forced-air drying drum, adjust the drying temperature to 35℃, and dry for 1 hour. After drying, pass the pelleted coated seeds through an 8-mesh sieve to remove seeds with incomplete pelleting and dust, and select qualified and plump seeds to put into a mesh bag for later use.

[0111] Example 9:

[0112] A processing method for a compound pelleting coating agent for rapeseed to increase yield under low-temperature stress includes the following steps:

[0113] S1: Sieve and grade the rapeseed seeds, remove poorly developed or broken seeds, remove stems and non-seed components, and weigh 200g of rapeseed seeds.

[0114] S2: Mix attapulgite, talc powder and bentonite in a mass ratio of 2:1:1 until uniform, weigh out 300 g, accurately weigh out 10 g of sodium carboxymethyl cellulose powder, add it to 1000 mL of water and dissolve it completely to prepare a 1% sodium carboxymethyl cellulose aqueous solution.

[0115] S3: Divide the mixed pellet powder from S2 into two equal parts. Leave one part untreated and add 3 g of 0.01% trehalose 6-phosphate powder to the other part and mix thoroughly.

[0116] S4: Add 200 g of rapeseed seeds to the feed hopper of the RH-325 seed pelleting machine. Set the machine speed to 35 r / min, the powder feeding speed to 150 g / min, and the water feeding rate to 15 mL / min. First, add a portion of untreated filler material to the powder feeding hopper for pelleting and coating. After the powder filling is completed, add filler containing yield enhancer for pelleting and coating again.

[0117] S5: After completing step S4, close the powder inlet and water inlet switches, adjust the machine speed to 15 r / min, add 10 g of red film-forming agent, rotate and color for 2 minutes, open the silo door, and collect the seeds.

[0118] S6: After step S5, place the rapeseed pelleted seeds in a forced-air drying drum, adjust the drying temperature to 35℃, and dry for 1 hour. After drying, pass the pelleted coated seeds through an 8-mesh sieve to remove seeds with incomplete pelleting and dust, and select qualified and plump seeds to put into a mesh bag for later use.

[0119] Example 10:

[0120] A processing method for a compound pelleting coating agent for rapeseed to increase yield under low-temperature stress includes the following steps:

[0121] S1: Sieve and grade the rapeseed seeds, remove poorly developed or broken seeds, remove stems and non-seed components, and weigh 200g of rapeseed seeds.

[0122] S2: Mix attapulgite, talc powder and bentonite in a mass ratio of 2:1:1 until uniform, weigh out 300 g, accurately weigh out 10 g of sodium carboxymethyl cellulose powder, add it to 1000 mL of water and dissolve it completely to prepare a 1% sodium carboxymethyl cellulose aqueous solution.

[0123] S3: Divide the mixed pellet powder in S2 into two equal parts. Do not process one part. Add 4 g of 99% sodium alginate powder to the other part and mix thoroughly.

[0124] S4: Add 200 g of rapeseed seeds to the feed hopper of the RH-325 seed pelleting machine. Set the machine speed to 35 r / min, the powder feeding speed to 150 g / min, and the water feeding rate to 15 mL / min. First, add a portion of untreated filler material to the powder feeding hopper for pelleting and coating. After the powder filling is completed, add filler containing yield enhancer for pelleting and coating again.

[0125] S5: After completing step S4, close the powder inlet and water inlet switches, adjust the machine speed to 15 r / min, add 10 g of red film-forming agent, rotate and color for 2 minutes, open the silo door, and collect the seeds.

[0126] S6: After step S5, place the rapeseed pelleted seeds in a forced-air drying drum, adjust the drying temperature to 35℃, and dry for 1 hour. After drying, pass the pelleted coated seeds through an 8-mesh sieve to remove seeds with incomplete pelleting and dust, and select qualified and plump seeds to put into a mesh bag for later use.

[0127] Example 11

[0128] A processing method for a compound pelleting coating agent for rapeseed to increase yield under low-temperature stress includes the following steps:

[0129] S1: Sieve and grade the rapeseed seeds, remove poorly developed or broken seeds, remove stems and non-seed components, and weigh 200g of rapeseed seeds.

[0130] S2: Mix attapulgite, talc powder and bentonite in a mass ratio of 2:1:1 until uniform, weigh out 300 g, accurately weigh out 10 g of sodium carboxymethyl cellulose powder, add it to 1000 mL of water and dissolve it completely to prepare a 1% sodium carboxymethyl cellulose aqueous solution.

[0131] S3: Divide the mixed pellet powder in S2 into two equal parts. Add 2 g of 0.4% Dahlia spore activating protein powder + 16 g of 50% calcium peroxide powder to one part, and add 1 g of 0.01% trehalose 6-phosphate powder to the other part. Mix the two parts of filler material thoroughly.

[0132] S4: Add 200 g of rapeseed seeds to the feed hopper of the RH-325 seed pelleting machine. Set the machine speed to 35 r / min, the powder feeding speed to 150 g / min, and the water feeding rate to 15 mL / min. First, add the filler material containing the low temperature stress resistance agent to the powder feeding hopper for pelleting and coating. After the powder filling is completed, add the filler containing the yield enhancer for pelleting and coating again.

[0133] S5: After completing step S4, close the powder inlet and water inlet switches, adjust the machine speed to 15 r / min, add 10 g of red film-forming agent, rotate and color for 2 minutes, open the silo door, and collect the seeds.

[0134] S6: After step S5, place the rapeseed pelleted seeds in a forced-air drying drum, adjust the drying temperature to 35℃, and dry for 1 hour. After drying, pass the pelleted coated seeds through an 8-mesh sieve to remove seeds with incomplete pelleting and dust, and select qualified and plump seeds to put into a mesh bag for later use.

[0135] Example 12

[0136] A processing method for a compound pelleting coating agent for rapeseed to increase yield under low-temperature stress includes the following steps:

[0137] S1: Sieve and grade the rapeseed seeds, remove poorly developed or broken seeds, remove stems and non-seed components, and weigh 200g of rapeseed seeds.

[0138] S2: Mix attapulgite, talc powder and bentonite in a mass ratio of 2:1:1 until uniform, weigh out 300 g, accurately weigh out 10 g of sodium carboxymethyl cellulose powder, add it to 1000 mL of water and dissolve it completely to prepare a 1% sodium carboxymethyl cellulose aqueous solution.

[0139] S3: Divide the mixed pellet powder in S2 into two equal parts. Add 4 g of 0.4% Dahlia spore activating protein powder + 32 g of 50% calcium peroxide powder to one part, and add 3 g of 0.01% trehalose 6-phosphate powder to the other part. Mix the two parts of filler material thoroughly.

[0140] S4: Add 200 g of rapeseed seeds to the feed hopper of the RH-325 seed pelleting machine. Set the machine speed to 35 r / min, the powder feeding speed to 150 g / min, and the water feeding rate to 15 mL / min. First, add the filler material containing the low temperature stress resistance agent to the powder feeding hopper for pelleting and coating. After the powder filling is completed, add the filler containing the yield enhancer for pelleting and coating again.

[0141] S5: After completing step S4, close the powder inlet and water inlet switches, adjust the machine speed to 15 r / min, add 10 g of red film-forming agent, rotate and color for 2 minutes, open the silo door, and collect the seeds.

[0142] S6: After step S5, place the rapeseed pelleted seeds in a forced-air drying drum, adjust the drying temperature to 35℃, and dry for 1 hour. After drying, pass the pelleted coated seeds through an 8-mesh sieve to remove seeds with incomplete pelleting and dust, and select qualified and plump seeds to put into a mesh bag for later use.

[0143] Comparative Example 1:

[0144] The specific steps for conventional seed coating using active ingredients are as follows:

[0145] S1: Sieve and grade the rapeseed seeds, remove poorly developed or broken seeds, remove stems and non-seed components, and weigh 200g of rapeseed seeds.

[0146] S2: Prepare rapeseed seed coating agent. Weigh 2 g of 0.4% Verticillium dauricum activating protein powder into a thickened self-sealing bag and dissolve it in 5 mL of water. Then add 16 g of 50% calcium peroxide powder and 4 g of film-forming agent and mix well. Pour 200 g of rapeseed into the self-sealing bag and turn it over until all active substances adhere to the seed surface. Spread it flat on paper and air dry for later use.

[0147] Comparative Example 2:

[0148] The specific steps for conventional seed coating using active ingredients are as follows:

[0149] S1: Sieve and grade the rapeseed seeds, remove poorly developed or broken seeds, remove stems and non-seed components, and weigh 200g of rapeseed seeds.

[0150] S2: Prepare rapeseed seed coating agent. Weigh 3 g of 0.4% Dahlia verticillium activating protein powder into a thickened self-sealing bag and dissolve it in 7.5 mL of water. Then add 24 g of 50% calcium peroxide powder and 4 g of film-forming agent and mix well. Pour 200 g of rapeseed into the self-sealing bag and turn it over until all active substances adhere to the seed surface. Spread it flat on paper and air dry for later use.

[0151] Comparative Example 3:

[0152] The specific steps for conventional seed coating using active ingredients are as follows:

[0153] S1: Sieve and grade the rapeseed seeds, remove poorly developed or broken seeds, remove stems and non-seed components, and weigh 200g of rapeseed seeds.

[0154] S2: Prepare rapeseed seed coating agent. Weigh 4 g of 0.4% Verticillium dahliae activating protein powder into a thickened self-sealing bag and dissolve it in 10 mL of water. Then add 32 g of 50% calcium peroxide powder and 4 g of film-forming agent and mix well. Pour 200 g of rapeseed into the self-sealing bag and turn it over until all active substances adhere to the seed surface. Spread it flat on paper and air dry for later use.

[0155] Comparative Example 4

[0156] The specific steps for conventional seed coating using active ingredients are as follows:

[0157] S1: Sieve and grade the rapeseed seeds, remove poorly developed or broken seeds, remove stems and non-seed components, and weigh 200g of rapeseed seeds.

[0158] S2: Prepare rapeseed seed coating agent. Weigh 1g of 0.01% trehalose 6-phosphate powder into a thickened self-sealing bag, dissolve it in 5 mL of water, and add 4g of film-forming agent to form a film. Pour 200g of rapeseed into the self-sealing bag and turn it over until the active substance adheres to the seed surface. Spread it flat on paper and air dry for later use.

[0159] Comparative Example 5:

[0160] The specific steps for conventional seed coating using active ingredients are as follows:

[0161] S1: Sieve and grade the rapeseed seeds, remove poorly developed or broken seeds, remove stems and non-seed components, and weigh 200g of rapeseed seeds.

[0162] S2: Prepare rapeseed seed coating agent. Weigh 2g of 0.01% trehalose 6-phosphate powder into a thickened self-sealing bag, dissolve it in 7.5 mL of water, and add 4g of film-forming agent to form a film. Pour 200g of rapeseed into the self-sealing bag and turn it over until the active substance adheres to the seed surface. Spread it flat on paper and air dry for later use.

[0163] Comparative Example 6:

[0164] The specific steps for conventional seed coating using active ingredients are as follows:

[0165] S1: Sieve and grade the rapeseed seeds, remove poorly developed or broken seeds, remove stems and non-seed components, and weigh 200g of rapeseed seeds.

[0166] S2: Prepare rapeseed seed coating agent. Weigh 4g of 0.01% trehalose 6-phosphate powder into a thickened self-sealing bag, dissolve it in 10 mL of water, and add 4g of film-forming agent to form a film. Pour 200g of rapeseed into the self-sealing bag and turn it over until the active substance adheres to the seed surface. Spread it flat on paper and air dry for later use.

[0167] Comparative Example 7:

[0168] The specific steps for conventional seed coating using active ingredients are as follows:

[0169] S1: Sieve and grade the rapeseed seeds, remove poorly developed or broken seeds, remove stems and non-seed components, and weigh 200g of rapeseed seeds.

[0170] S2: Prepare rapeseed seed coating agent. Weigh 4 g of 99% sodium alginate powder into a thickened self-sealing bag, dissolve it in 10 mL of water, and add 4 g of film-forming agent to form a film. Pour 200 g of rapeseed into the self-sealing bag and turn it over until the active substance adheres to the seed surface. Spread it flat on paper and air dry for later use.

[0171] Comparative Example 8:

[0172] The specific steps for conventional seed coating using active ingredients are as follows:

[0173] S1: Sieve and grade the rapeseed seeds, remove poorly developed or broken seeds, remove stems and non-seed components, and weigh 200g of rapeseed seeds.

[0174] S2: Prepare rapeseed seed coating agent. Weigh 2 g of 0.4% Verticillium dahliae activating protein powder and 1 g of 0.01% trehalose 6-phosphate powder into a thickened self-sealing bag. Dissolve the powder in 5 mL of water. Add 16 g of 50% calcium peroxide powder and 4 g of film-forming agent and mix well. Pour 200 g of rapeseed into the self-sealing bag and turn it over until all active substances adhere to the seed surface. Spread the seeds evenly on paper and air dry for later use.

[0175] Comparative Example 9:

[0176] The specific steps for conventional seed coating using active ingredients are as follows:

[0177] S1: Sieve and grade the rapeseed seeds, remove poorly developed or broken seeds, remove stems and non-seed components, and weigh 200g of rapeseed seeds.

[0178] S2: Prepare rapeseed seed coating agent. Weigh 4 g of 0.4% Verticillium dahliae activating protein powder and 3 g of 0.01% trehalose 6-phosphate powder into a thickened self-sealing bag. Dissolve the powder in 10 mL of water. Then add 32 g of 50% calcium peroxide powder and 4 g of film-forming agent and mix well. Pour 200 g of rapeseed into the self-sealing bag and turn it over until all active substances adhere to the seed surface. Spread the seeds evenly on paper and air dry for later use.

[0179] Test example:

[0180] 1. Germination and seedling emergence tests were conducted using the composite pelleted coated seeds obtained by this invention:

[0181] Place absorbent filter paper in a 90 mm petri dish, moisten with water, and place 50 seeds of each of Examples 1-12, Comparative Examples 1-9, and naked rapeseed seeds in each treatment group, with 3 replicates per group. Incubate in an incubator at 25°C, adding a small amount of water periodically to keep the filter paper moist. Investigate the germination rate on the 5th day after sowing.

[0182] Examples 1-12, Comparative Examples 1-9, and naked rapeseed were selected. 100 rapeseed seeds were sown evenly in plastic seedling trays, with 3 replicates per group. A thin layer of soil was covered. The emergence of each treatment was investigated on the 10th day after sowing.

[0183] Results and Analysis:

[0184] Seed germination and seedling emergence test results are as follows Figure 1 As shown, the compound pelleting and coating of rapeseed seeds with different inert materials and added active substances had no effect on germination and emergence. The germination rate of naked rapeseed seeds after 5 days was 91.67%. The germination rate of pelleted and coated rapeseed seeds in Examples 1-12 ranged from 93.33% to 97.33%. Compared to naked seeds, the germination rate of pelleted and coated rapeseed seeds was improved. In Comparative Examples 1-9, the germination rate of seed-coated rapeseed seeds was between 91.00% and 92.67%, showing no significant difference compared to naked seeds. Ten days after sowing naked rapeseed seeds, the emergence rate was 84.00%. The emergence rate of pelleted and coated rapeseed seeds in Examples 1-12 ranged from 85.33% to 90.67%, higher than that of naked seeds. In Comparative Examples 1-9, the emergence rate of seed-coated rapeseed seeds was between 83.33% and 86.33%, showing no significant difference compared to naked seeds. This indicates that compound pelleting and coating of rapeseed seeds can improve seed germination and emergence rates.

[0185] 2. Field trials of low-temperature stress resistance and yield were conducted using the composite pelleted coated seeds obtained by this invention:

[0186] Field sowing trials were conducted on Examples 4-12, Comparative Examples 1-9, and naked seed rapeseed. The low-temperature stress tolerance of rapeseed in each plot of Examples 4-6, 11, 12, Comparative Examples 1-3, 8, 9, and naked seed rapeseed was determined. The yield effects of Examples 7-10, 11, 12, Comparative Examples 4-9, and naked seed rapeseed were also determined. Each experimental treatment was sown at a depth of 20 m. 2 Direct sowing was adopted, with 5-8 seeds sown per hole. Thinning was carried out one month after sowing, leaving only two seedlings per hole. 100 days after sowing, after a cold wave, the degree of frost damage to rapeseed plants and the chlorophyll content of leaves in each plot were measured. After the rapeseed matured, the yield of each plot was measured. Each treatment was replicated three times.

[0187] Standards for frost damage to rapeseed:

[0188] Grade 0: The plant is normal and has not been damaged by frost.

[0189] Grade I: Only a few large leaves are affected, and the affected leaves are partially or mostly withered and grayish-white.

[0190] Grade II: Half of the leaves are affected, with some or most of the affected leaves withered and scorched, but the heart leaves are normal.

[0191] Level III: Most of the leaves are frozen, and the affected leaves are partially or mostly withered and scorched. The heart leaves are normal or slightly damaged by freezing, and the plant can still recover and grow.

[0192] Level IV: All large and new leaves are frozen and tend to die.

[0193] Freezing rate % = ×100%

[0194] Frost damage index %=

[0195] Note: S1, S2, S3, and S4 represent the number of plants damaged at each of the four levels of frost, namely, I, II, III, and IV.

[0196] Results of field survey on frost damage:

[0197] The results of field frost damage tests for each embodiment and comparative example are shown in Table 1 and Figure 2Field survey results showed that after being subjected to low-temperature stress, the frost damage rate of rapeseed plants in the naked-sown control reached 88%, and the frost damage index was as high as 48.83%. The frost damage rates and frost damage indices of the other examples and comparative examples were significantly lower than those of the naked-sown control. Furthermore, the frost damage rate and frost damage index of the pelleted examples were also lower than those of the seed-treated comparative examples with the same dosage, indicating that pelleting can effectively reduce the loss of active substances and enhance the rapeseed plants' resistance to low-temperature stress. Simultaneously, the addition of antifreeze substances also increased the chlorophyll content in rapeseed leaves. The chlorophyll content of the naked-sown control was 24.70 SPAD, while the chlorophyll content of rapeseed leaves in the example treatments reached 36.79~40.02 SPAD, and the chlorophyll content of leaves in the comparative treatments was 30.62~32.74 SPAD.

[0198] In summary, the composite pelleting coating of rapeseed seeds of the present invention can improve the rapeseed's resistance to low-temperature stress.

[0199] Table 1. Frost damage and chlorophyll content of rapeseed in different embodiments and comparative examples in the field.

[0200]

[0201] Results of field yield trials:

[0202] The field yields of rapeseed in each embodiment and comparative example are shown in Table 2 and Figure 3 Field trial results showed that different implementation examples and comparative examples had a certain promoting effect on rapeseed yield. After naked sowing, the rapeseed yield per unit area was 4.57 kg / 20m². 2 The rapeseed yield in Examples 7-12 was 5.29-5.74 kg / 20 m². 2 Compared to the naked control, the yield increase was 15.60%–25.58%. Meanwhile, the yields of treatments 4–9 in comparison were 4.75%–4.99%, representing an increase of 3.86%–9.18% compared to the naked control.

[0203] In summary, the rapeseed composite pelleting coating of the present invention can increase the final yield of rapeseed.

[0204] Table 2. Field rapeseed yields of different embodiments and comparative examples.

[0205] Processing Name <![CDATA[Yield per unit area kg / 20 m 2 > Compared to the control group, the increase was % nude control 4.57±0.13 - Example 7 5.29±0.09 15.60 Example 8 5.56±0.13 21.50 Example 9 5.73±0.06 25.36 Example 10 5.49±0.06 20.04 Example 11 5.57±0.11 21.72 Example 12 5.74±0.18 25.58 Comparative Example 4 4.75±0.04 3.86 Comparative Example 5 4.89±0.05 6.85 Comparative Example 6 4.99±0.08 9.18 Comparative Example 7 4.79±0.03 4.66 Comparative Example 8 4.84±0.03 5.83 Comparative Example 9 4.83±0.08 5.61

[0206] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A compound pelleting coating agent for rapeseed seeds to increase yield under low-temperature stress, characterized in that, The composite pelleting coating agent includes fillers, binders, and agents for resisting low-temperature stress and increasing yield; wherein... The anti-low temperature stress is one or more of the following: amino acid ester, Verticillium dahliae activator protein, amino oligosaccharide, dihydroporphyrin iron, brassinolide, calcium peroxide, sodium alginate, and salicylic acid. The yield-enhancing agent is one or more of boron fertilizer, trace element fertilizer, amino acid water-soluble fertilizer, humic acid, and trehalose-6-phosphate. The filler is a mixture of attapulgite, talc, and bentonite; The adhesive is any one of sodium carboxymethyl cellulose, methyl cellulose, and polyvinyl alcohol.

2. The rapeseed compound pelleting coating agent for increasing yield under low-temperature stress according to claim 1, characterized in that, The mass ratio of attapulgite, talc, and bentonite is 2~3:0.5~1:

1.

3. The rapeseed compound pelleting coating agent for increasing yield under low-temperature stress according to claim 1, characterized in that, The adhesive is sodium carboxymethyl cellulose in an aqueous solution with a content of 1% to 1.5%.

4. The rapeseed compound pelleting coating agent for increasing yield under low-temperature stress according to claim 1, characterized in that, The low-temperature stress resistance is achieved by using Verticillium dahliae activating protein and calcium peroxide, wherein the Verticillium dahliae activating protein is a 0.4% powder and the calcium peroxide is a 50% powder, and the ratio of its dosage to seed weight is 1~2:8~16:

100.

5. The rapeseed compound pelleting coating agent for increasing yield under low-temperature stress according to claim 1, characterized in that, The yield enhancer is either trehalose 6-phosphate or sodium alginate, wherein the trehalose 6-phosphate content is 0.1% powder and the sodium alginate content is 99% powder, and the dosage ratio to seed weight is 0.5~2:

100.

6. A processing method for a compound pelleting coating agent for rapeseed that increases yield under low-temperature stress, characterized in that, Includes the following steps: S1. Rapeseed pretreatment: The rapeseed seeds are graded and sieved to select seeds of uniform size, and then disinfected and dried. S2. Preparation of composite pelletized powder: To prepare pelletized filler material, attapulgite, talc and bentonite are mixed evenly according to the mass ratio to obtain pelletized powder for later use. S3. Pellet coating: Pour the rapeseed into a rotary pelleting machine, weigh the pelleting powder according to the ratio and divide it into two equal parts. Add a low-temperature stress resistance agent to one part and a yield enhancer to the other part. Mix them thoroughly and evenly. First, add the pelleting powder containing the low-temperature stress resistance agent into the powder hopper of the machine for pelleting. After the powder is used up, add the pelleting powder containing the yield enhancer for processing until the rapeseed pelleting is completed. S4. Add film-forming agent: After step S3 is completed, turn off the powder inlet and water inlet switches, adjust the machine speed, and add a film-forming agent containing color. S5. Dry storage: After step S4 is completed, the rapeseed pelleted seeds are placed in a forced-air drying drum, the drying temperature is adjusted, and the seeds are dried by forced air. After drying, the pelleted coated seeds are passed through a mesh screen to remove seeds with incomplete pelleting and coating and dust. Qualified and plump seeds are selected and placed in mesh bags for later use.

7. The processing method of the rapeseed compound pelleting coating agent for increasing yield under low-temperature stress according to claim 6, characterized in that, In step S2, the weight ratio of rapeseed seeds to pelleted powder is 1:1.5~2.

8. The processing method of the rapeseed compound pelleting coating agent for increasing yield under low-temperature stress according to claim 6, characterized in that, In step S3, the pelletizing machine rotates at 30-40 r / min, the powder feeding rate is 150-200 g / min, and the water flow rate during pelletizing is 15-20 mL / min.

9. The processing method of the rapeseed compound pelleting coating agent for increasing yield under low-temperature stress according to claim 6, characterized in that, In step S4, the machine speed is adjusted to 10-20 r / min, and the ratio of film-forming agent mass to rapeseed mass is 1-2:

20.

10. The processing method of the rapeseed compound pelleting coating agent for increasing yield under low-temperature stress according to claim 7, characterized in that, In step S5, the drying temperature is adjusted to 35°C, and the seeds are dried by forced air for 1 hour. After drying, the pelleted and coated seeds are passed through an 8-mesh sieve.

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