Rice root and leaf two-way regulation and control blocking coupling method

Abstract

The invention discloses a rice root and leaf bidirectional regulation barrier coupling method, which belongs to the technical field of rice planting, and comprises the following steps: S1, selecting a rice planting field; s2, applying and scattering modified ferroferric oxide; s3, deeply ploughing the soil of the rice planting land; s4, the modified ferroferric oxide adsorbing the heavy metal cadmium ions is removed through magnetic attraction; s5, selecting a high-quality rice variety; s6, the high-quality rice variety and valerian seeds are subjected to seed soaking, germination accelerating, sowing and seedling raising; s7, applying compost, shallowly turning the soil of the rice planting land, and exposing to the sun; s8, before transplanting, leveling and spraying water for cooling; s9, during transplanting, transplanting; s10, after transplanting, injecting water; s11, in the growing period, fertilizer and water are supplemented regularly; s12, harvesting in a harvesting period; according to the invention, bidirectional regulation and separation coupling of rice roots and leaves can be realized, and the planting quality and yield of rice are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of rice planting, and in particular relates to a rice root and leaf bidirectional regulation barrier coupling method. Background Art

[0002] As an important food crop in my country, rice is susceptible to heavy metal pollution during its growth process, especially cadmium pollution, which not only affects the quality of rice, but also may cause harm to human health through the food chain. Therefore, how to effectively reduce rice's absorption of cadmium has become a hot topic in current agricultural environmental science research.

[0003] At present, the general method of preventing cadmium in rice is to apply fertilizer to the soil in the rice-growing area. The fertilizer contains substances that reduce the activity of cadmium ions in the soil to achieve the purpose of preventing cadmium.

[0004] Although the above method can achieve the purpose of cadmium blocking, cadmium ions still exist in the soil. When the environmental conditions are met, the cadmium ions will be converted into a free state and absorbed by rice, that is, the cadmium blocking effect is poor.

[0005] In view of this, a rice root and leaf bidirectional regulation barrier coupling method was designed to solve the above problems. Summary of the invention

[0006] To solve the problems raised in the above background technology, the present invention provides a rice root and leaf bidirectional regulation barrier coupling method, which has the characteristics of being able to achieve rice root and leaf bidirectional regulation barrier coupling and improve rice planting quality and yield.

[0007] To achieve the above object, the present invention provides the following technical solution: a rice root and leaf bidirectional regulation barrier coupling method, comprising the following steps:

[0008] S1: Select acidic soil areas as rice planting areas;

[0009] S2: Spreading modified ferroferric oxide into the soil of rice planting areas;

[0010] S3: Deeply plowing the soil of the rice planting area to fully integrate the modified ferroferric oxide with the soil of the rice planting area, and the modified ferroferric oxide absorbs the heavy metal cadmium ions in the soil;

[0011] S4: Magnetic removal of modified ferroferric oxide that adsorbs heavy metal cadmium ions;

[0012] S5: Select suitable high-quality rice varieties according to the climate and soil environment of the rice-growing area;

[0013] S6: soaking and germinating the seeds of high-quality rice varieties and valerian seeds, sowing and raising seedlings respectively;

[0014] S7: During the seed soaking, germination, sowing and seedling raising process, compost is applied to the soil of the rice planting area, the soil of the rice planting area is shallowly turned over to fully blend the compost with the soil of the rice planting area, and the soil is exposed to the sun;

[0015] S8: Before transplanting, the shallowly turned rice planting soil is leveled and water is sprayed into the rice planting soil to cool it down until the soil moisture content of the rice planting soil is suitable for planting rice and valerian;

[0016] S9: When transplanting, interplant rice seedlings and valerian seedlings in the soil of the rice planting area;

[0017] S10: After transplanting, water can be added to the appropriate amount;

[0018] S11: During the growth period, fertilizer and water should be added regularly, where fertilizer includes root fertilizer and foliar fertilizer;

[0019] S12: Harvest period, harvesting is done by machinery.

[0020] Furthermore, in step S1, the pH value of the acidic soil is 4.5-5.5.

[0021] Furthermore, in step S2, the modification step of modifying ferrosoferric oxide includes:

[0022] S201: adding polyacrylic acid and ferrosoferric oxide powder into diethylene glycol, placing the mixture under nitrogen atmosphere, and heating under reflux to promote the reaction between polyacrylic acid and ferrosoferric oxide;

[0023] S202: adding sodium hydroxide to diethylene glycol, and after the predetermined reaction time is reached, adding the diethylene glycol to the mixed solution, and continuing to heat and reflux until the predetermined reaction time is reached and then stopping. During the heating and reflux process, the addition of sodium hydroxide will promote the hydrolysis and oxidation reaction of trivalent iron ions to generate ferroferric oxide nanoparticles, and at the same time, polyacrylic acid molecules will be coated on the surface of the ferroferric oxide nanoparticles, that is, the reaction product is ferroferric oxide nanoparticles coated with polyacrylic acid;

[0024] S203: cooling the solution to room temperature, and centrifuging to obtain ferrosoferric oxide nanoparticles coated with polyacrylic acid;

[0025] S204: washing the ferrosoferric oxide nanoparticles coated with polyacrylic acid with anhydrous ethanol to remove residual impurities, thereby obtaining modified ferrosoferric oxide.

[0026] Furthermore, the specific steps of step S4 include:

[0027] S401: planning a driving route and driving parameters of the magnetic soil remover according to the rice planting area;

[0028] S402: The magnetic soil remover travels according to the planned driving route and driving parameters. During the driving process, when the soil containing modified ferroferric oxide that absorbs heavy metal cadmium ions passes through the magnetic soil remover, the magnet inside the magnetic soil remover will generate a strong magnetic field, which will absorb the modified ferroferric oxide that absorbs heavy metal cadmium ions in the soil onto the magnet, while the soil is thrown out, thereby achieving magnetic removal of the modified ferroferric oxide that absorbs heavy metal cadmium ions.

[0029] Furthermore, in step S11, the root fertilizer includes glycine, quicklime, Titan konjac powder, Bacillus and deionized water, wherein the weight proportions of each component are: 10-20 parts of glycine, 20-30 parts of quicklime, 2-5 parts of Titan konjac powder, 1-2 parts of Bacillus and 30-50 parts of deionized water.

[0030] Furthermore, in step S11, the foliar fertilizer includes sodium silicate, potassium nitrate, selenate, boric acid, humic acid and deionized water, wherein the weight proportions of each component are: 20-30 parts of sodium silicate, 10-15 parts of potassium nitrate, 2-5 parts of selenate, 5-8 parts of boric acid, 10-15 parts of humic acid and 50-100 parts of deionized water.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. The present invention uses acidic soil as a rice planting site, spreads modified ferroferric oxide, and deep plows the soil so that the modified ferroferric oxide can be fully integrated with the soil, adsorbs heavy metal cadmium ions in the soil, and then removes them through magnetic attraction, which can remove heavy metal cadmium ions in the soil to the greatest extent, and preliminarily blocks the adsorption of heavy metals during rice planting. At the same time, shallow plowing is performed to fully integrate fertilizer and soil, improve soil nutrition, and at the same time, exposure to the sun can minimize the presence of pests and diseases in the soil, reduce the occurrence of pests and diseases, and at the same time, intercropping rice and valerian can reduce the heavy metal cadmium ions in the early and late stages of the soil, and further block the adsorption of heavy metals during rice planting. At the same time, valerian that adsorbs cadmium ions can reduce the number of mole crickets and aphids that eat valerian, and reduce pests and diseases. By applying root fertilizers and foliar fertilizers, the heavy metal cadmium ions in the early and late stages of the soil can be reduced, and the adsorption of heavy metals during rice planting can be further blocked. The combination of the four can achieve two-way regulation and barrier coupling of rice roots and leaves, and improve the planting quality and yield of rice.

[0033] 2. The rice root fertilizer of the present invention is composed of glycine, quicklime, Titan konjac flour, Bacillus and deionized water. The quicklime can react with acidic substances in the soil to generate cadmium hydroxide precipitates, thereby reducing the probability of cadmium ions being absorbed by rice. The Titan konjac flour has the effect of emitting the smell of rotten substances, and can attract earthworms, beetles and the like to absorb and eat the cadmium hydroxide precipitates near the rice, thereby reducing the cadmium ions in the soil. Glycine and Bacillus are rich in active groups such as carboxyl and amide groups, and can make the bacterial cell surface have a strong negative charge after losing protons, and can effectively adsorb cadmium ions through electrostatic attraction, thereby reducing the free cadmium ions in the soil.

[0034] 3. The rice foliar fertilizer of the present invention is composed of sodium silicate, potassium nitrate, selenate, boric acid, humic acid and deionized water. Sodium silicate is extracted from high-grade silicon dioxide by a high-temperature physical extraction method, has high water solubility, high activity, is easily absorbed by rice, and can provide silicon to rice. Potassium nitrate can provide nitrogen and potassium to rice. Selenate can provide selenium to rice and promote rice antioxidant activity. Boric acid can provide boron to rice and promote rice cell division and elongation. Humic acid can increase chlorophyll on the rice leaf surface and promote photosynthesis. At the same time, it can promote the absorption of the above components by the leaf surface by adjusting the degree of opening of the stoma on the leaf surface, can provide sufficient nutrition for the rice leaf surface and rice, and then increase the cadmium-blocking effect of rice. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 The present invention is a flow chart of the rice root and leaf bidirectional regulation barrier coupling method. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] A rice root-leaf bidirectional regulation barrier coupling method comprises the following steps:

[0038] S1: Select acidic soil areas as rice planting areas;

[0039] S2: Spreading modified ferroferric oxide into the soil of rice planting areas;

[0040] In this embodiment, it is assumed that the heavy metal ions present in the soil of the rice planting area are cadmium ions, so modified ferrosoferric oxide is applied;

[0041] Modified ferroferric oxide can absorb heavy metal cadmium ions in the soil of rice-growing areas;

[0042] In practical application, if the heavy metal ions present in the soil of the rice planting area are other and the modified ferroferric oxide cannot adsorb them, other substances can be replaced so that it can adsorb the heavy metal ions in the soil of the rice planting area and have magnetism;

[0043] S3: Deeply plowing the soil of the rice planting area to fully integrate the modified ferroferric oxide with the soil of the rice planting area, and the modified ferroferric oxide absorbs the heavy metal cadmium ions in the soil;

[0044] S4: Magnetic removal of modified ferroferric oxide that adsorbs heavy metal cadmium ions;

[0045] Modified ferrosoferric oxide is magnetic, so magnetic removal is used;

[0046] S5: Select suitable high-quality rice varieties according to the climate and soil environment of the rice-growing area;

[0047] S6: soaking and germinating the seeds of high-quality rice varieties and valerian seeds, sowing and raising seedlings respectively;

[0048] S7: During the seed soaking, germination, sowing and seedling raising process, compost is applied to the soil of the rice planting area, the soil of the rice planting area is shallowly turned over to fully blend the compost with the soil of the rice planting area, and the soil is exposed to the sun;

[0049] S8: Before transplanting, the shallowly turned rice planting soil is leveled and water is sprayed into the rice planting soil to cool it down until the soil moisture content of the rice planting soil is suitable for planting rice and valerian;

[0050] S9: When transplanting, interplant rice seedlings and valerian seedlings in the soil of the rice planting area;

[0051] In this embodiment, valerian can absorb heavy metal cadmium ions in the soil of rice-growing areas, reduce the free cadmium ions in the soil of rice-growing areas, and block the amount of heavy metal cadmium ions absorbed by rice;

[0052] S10: After transplanting, water can be added to the appropriate amount;

[0053] S11: During the growth period, fertilizer and water should be added regularly, where fertilizer includes root fertilizer and foliar fertilizer;

[0054] S12: Harvest period, harvesting is done by machinery.

[0055] Specifically, in step S1, the pH value of the acidic soil is 4.5-5.5.

[0056] Specifically, in step S2, the modification step of modifying ferrosoferric oxide includes:

[0057] S201: adding polyacrylic acid and ferrosoferric oxide powder into diethylene glycol, placing the mixture under nitrogen atmosphere, and heating under reflux to promote the reaction between polyacrylic acid and ferrosoferric oxide;

[0058] The purpose of placing the container in a nitrogen environment is to remove oxygen from the container to prevent the substance from being oxidized during the heating process;

[0059] S202: adding sodium hydroxide to diethylene glycol, and after the predetermined reaction time is reached, adding the diethylene glycol to the mixed solution, and continuing to heat and reflux until the predetermined reaction time is reached and then stopping. During the heating and reflux process, the addition of sodium hydroxide will promote the hydrolysis and oxidation reaction of trivalent iron ions to generate ferroferric oxide nanoparticles, and at the same time, polyacrylic acid molecules will be coated on the surface of the ferroferric oxide nanoparticles, that is, the reaction product is ferroferric oxide nanoparticles coated with polyacrylic acid;

[0060] S203: cooling the solution to room temperature, and centrifuging to obtain ferrosoferric oxide nanoparticles coated with polyacrylic acid;

[0061] S204: washing the ferrosoferric oxide nanoparticles coated with polyacrylic acid with anhydrous ethanol to remove residual impurities, thereby obtaining modified ferrosoferric oxide.

[0062] Specifically, the specific steps of step S4 include:

[0063] S401: planning a driving route and driving parameters of the magnetic soil remover according to the rice planting area;

[0064] S402: The magnetic soil remover travels according to the planned driving route and driving parameters. During the driving process, when the soil containing modified ferroferric oxide that absorbs heavy metal cadmium ions passes through the magnetic soil remover, the magnet inside the magnetic soil remover will generate a strong magnetic field, which will absorb the modified ferroferric oxide that absorbs heavy metal cadmium ions in the soil onto the magnet, while the soil is thrown out, thereby achieving magnetic removal of the modified ferroferric oxide that absorbs heavy metal cadmium ions.

[0065] Specifically, in step S11, the root fertilizer includes glycine, quicklime, Titan konjac powder, Bacillus and deionized water, wherein the weight proportions of each component are: 10-20 parts of glycine, 20-30 parts of quicklime, 2-5 parts of Titan konjac powder, 1-2 parts of Bacillus and 30-50 parts of deionized water.

[0066] Preparation method of root fertilizer: put glycine, quicklime, Titan konjac powder and Bacillus in deionized water, stir to make glycine, quicklime, Titan konjac powder and Bacillus evenly dissolved in the deionized water, and fill into packaging bottles;

[0067] How to use the root fertilizer: Before use, shake the package bottle to evenly mix the substances in the package bottle, and then place the root fertilizer and water in proportion in the spraying equipment. The ratio of root fertilizer to water is pre-printed on the package bottle, and the rice roots are sprayed with the spraying equipment.

[0068] Specifically, in step S11, the foliar fertilizer includes sodium silicate, potassium nitrate, selenate, boric acid, humic acid and deionized water, wherein the weight proportions of each component are: 20-30 parts of sodium silicate, 10-15 parts of potassium nitrate, 2-5 parts of selenate, 5-8 parts of boric acid, 10-15 parts of humic acid and 50-100 parts of deionized water.

[0069] Preparation method of foliar fertilizer: put sodium silicate, potassium nitrate, selenate, boric acid and humic acid in deionized water, stir to make sodium silicate, potassium nitrate, selenate, boric acid and humic acid evenly dissolved in the deionized water, and fill into packaging bottles;

[0070] Sodium silicate is a water-soluble sodium silicate extracted from high-grade silicon dioxide by high-temperature physical extraction;

[0071] How to use root fertilizer: Before use, shake the bottle to mix the contents evenly, then place the foliar fertilizer and water in proportion in the spraying equipment. The ratio of foliar fertilizer to water is pre-printed on the bottle, and the spraying equipment is used to spray the rice roots.

[0072] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rice root and leaf bidirectional regulation barrier coupling method, characterized in that: The following steps are involved: S1: Select acidic soil areas as rice planting areas; S2: Spreading modified ferroferric oxide into the soil of rice planting areas; S3: Deeply plowing the soil of the rice planting area to fully integrate the modified ferroferric oxide with the soil of the rice planting area, and the modified ferroferric oxide absorbs the heavy metal cadmium ions in the soil; S4: Magnetic removal of modified ferroferric oxide that adsorbs heavy metal cadmium ions; S5: Select suitable high-quality rice varieties according to the climate and soil environment of the rice-growing area; S6: soaking and germinating the seeds of high-quality rice varieties and valerian seeds, sowing and raising seedlings respectively; S7: During the seed soaking, germination, sowing and seedling raising process, compost is applied to the soil of the rice planting area, the soil of the rice planting area is shallowly turned over to fully blend the compost with the soil of the rice planting area, and the soil is exposed to the sun; S8: Before transplanting, the shallowly turned rice planting soil is leveled and water is sprayed into the rice planting soil to cool it down until the soil moisture content of the rice planting soil is suitable for planting rice and valerian; S9: When transplanting, interplant rice seedlings and valerian seedlings in the soil of the rice planting area; S10: After transplanting, water can be added to the appropriate amount; S11: During the growth period, fertilizer and water should be added regularly, where fertilizer includes root fertilizer and foliar fertilizer; S12: Harvest period, harvesting is done by machinery.

2. A rice root-leaf bidirectional regulation barrier coupling method according to claim 1, characterized in that: In step S1, the pH value of the acidic soil is 4.5-5.

5.

3. The rice root and leaf bidirectional regulation barrier coupling method according to claim 1, characterized in that: In step S2, the modification step of modifying ferrosoferric oxide includes: S201: adding polyacrylic acid and ferrosoferric oxide powder into diethylene glycol, placing the mixture under nitrogen atmosphere, and heating under reflux to promote the reaction between polyacrylic acid and ferrosoferric oxide; S202: adding sodium hydroxide to diethylene glycol, and after the predetermined reaction time is reached, adding the diethylene glycol to the mixed solution, and continuing to heat and reflux until the predetermined reaction time is reached and then stopping. During the heating and reflux process, the addition of sodium hydroxide will promote the hydrolysis and oxidation reaction of trivalent iron ions to generate ferroferric oxide nanoparticles, and at the same time, polyacrylic acid molecules will be coated on the surface of the ferroferric oxide nanoparticles, that is, the reaction product is ferroferric oxide nanoparticles coated with polyacrylic acid; S203: cooling the solution to room temperature, and centrifuging to obtain ferrosoferric oxide nanoparticles coated with polyacrylic acid; S204: washing the ferrosoferric oxide nanoparticles coated with polyacrylic acid with anhydrous ethanol to remove residual impurities, thereby obtaining modified ferrosoferric oxide.

4. The rice root and leaf bidirectional regulation barrier coupling method according to claim 1, characterized in that: The specific steps of step S4 include: S401: planning a driving route and driving parameters of the magnetic soil remover according to the rice planting area; S402: The magnetic soil remover travels according to the planned driving route and driving parameters. During the driving process, when the soil containing modified ferroferric oxide that absorbs heavy metal cadmium ions passes through the magnetic soil remover, the magnet inside the magnetic soil remover will generate a strong magnetic field, which will absorb the modified ferroferric oxide that absorbs heavy metal cadmium ions in the soil onto the magnet, while the soil is thrown out, thereby achieving magnetic removal of the modified ferroferric oxide that absorbs heavy metal cadmium ions.

5. The rice root and leaf bidirectional regulation barrier coupling method according to claim 1, characterized in that: In step S11, the root fertilizer includes glycine, quicklime, Titan konjac powder, Bacillus and deionized water, wherein the weight proportions of each component are: 10-20 parts of glycine, 20-30 parts of quicklime, 2-5 parts of Titan konjac powder, 1-2 parts of Bacillus and 30-50 parts of deionized water.

6. The rice root and leaf bidirectional regulation barrier coupling method according to claim 1, characterized in that: In step S11, the foliar fertilizer includes sodium silicate, potassium nitrate, selenate, boric acid, humic acid and deionized water, wherein the weight proportions of each component are: 20-30 parts of sodium silicate, 10-15 parts of potassium nitrate, 2-5 parts of selenate, 5-8 parts of boric acid, 10-15 parts of humic acid and 50-100 parts of deionized water.

Images