CN112840980A - Planting method of selenium-rich rice - Google Patents
Planting method of selenium-rich rice Download PDFInfo
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- CN112840980A CN112840980A CN201911177222.XA CN201911177222A CN112840980A CN 112840980 A CN112840980 A CN 112840980A CN 201911177222 A CN201911177222 A CN 201911177222A CN 112840980 A CN112840980 A CN 112840980A
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- 239000011669 selenium Substances 0.000 title claims abstract description 101
- 229910052711 selenium Inorganic materials 0.000 title claims abstract description 101
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 title claims abstract description 100
- 235000007164 Oryza sativa Nutrition 0.000 title claims abstract description 54
- 235000009566 rice Nutrition 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 25
- 240000007594 Oryza sativa Species 0.000 title 1
- 241000209094 Oryza Species 0.000 claims abstract description 59
- 239000000843 powder Substances 0.000 claims abstract description 44
- 239000003337 fertilizer Substances 0.000 claims abstract description 36
- 239000003245 coal Substances 0.000 claims abstract description 22
- 235000019738 Limestone Nutrition 0.000 claims abstract description 13
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 13
- 239000006028 limestone Substances 0.000 claims abstract description 13
- 239000011790 ferrous sulphate Substances 0.000 claims abstract description 11
- 235000003891 ferrous sulphate Nutrition 0.000 claims abstract description 11
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 4
- SURQXAFEQWPFPV-UHFFFAOYSA-L iron(2+) sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Fe+2].[O-]S([O-])(=O)=O SURQXAFEQWPFPV-UHFFFAOYSA-L 0.000 claims description 17
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000003895 organic fertilizer Substances 0.000 claims description 5
- 239000006227 byproduct Substances 0.000 claims description 4
- 239000004408 titanium dioxide Substances 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 3
- KMQAPZBMEMMKSS-UHFFFAOYSA-K calcium;magnesium;phosphate Chemical compound [Mg+2].[Ca+2].[O-]P([O-])([O-])=O KMQAPZBMEMMKSS-UHFFFAOYSA-K 0.000 claims description 2
- XBDUTCVQJHJTQZ-UHFFFAOYSA-L iron(2+) sulfate monohydrate Chemical group O.[Fe+2].[O-]S([O-])(=O)=O XBDUTCVQJHJTQZ-UHFFFAOYSA-L 0.000 claims description 2
- 239000002367 phosphate rock Substances 0.000 claims description 2
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 claims description 2
- 239000002689 soil Substances 0.000 abstract description 11
- 238000010521 absorption reaction Methods 0.000 abstract description 7
- 239000003621 irrigation water Substances 0.000 abstract description 5
- 235000021329 brown rice Nutrition 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 abstract description 2
- 238000003860 storage Methods 0.000 abstract description 2
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 abstract 2
- 229940091258 selenium supplement Drugs 0.000 description 67
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 238000012360 testing method Methods 0.000 description 6
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical class [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 5
- 239000000084 colloidal system Substances 0.000 description 5
- 235000013339 cereals Nutrition 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 235000019341 magnesium sulphate Nutrition 0.000 description 3
- 230000001737 promoting effect Effects 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 229910052785 arsenic Inorganic materials 0.000 description 2
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052793 cadmium Inorganic materials 0.000 description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 229960004887 ferric hydroxide Drugs 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- IEECXTSVVFWGSE-UHFFFAOYSA-M iron(3+);oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Fe+3] IEECXTSVVFWGSE-UHFFFAOYSA-M 0.000 description 2
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 239000011573 trace mineral Substances 0.000 description 2
- 235000013619 trace mineral Nutrition 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 206010039921 Selenium deficiency Diseases 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000036983 biotransformation Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 239000003864 humus Substances 0.000 description 1
- 230000036737 immune function Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 235000014413 iron hydroxide Nutrition 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 235000007079 manganese sulphate Nutrition 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000009758 senescence Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910000349 titanium oxysulfate Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
- A01G22/20—Cereals
- A01G22/22—Rice
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C21/00—Methods of fertilising, sowing or planting
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D3/00—Calcareous fertilisers
- C05D3/02—Calcareous fertilisers from limestone, calcium carbonate, calcium hydrate, slaked lime, calcium oxide, waste calcium products
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Botany (AREA)
- Fertilizers (AREA)
Abstract
The invention provides a planting method of selenium-rich rice, which is characterized in that selenium fertilizer containing selenium-rich coal gangue powder is applied together with a base fertilizer when the rice field is finished, and the selenium fertilizer is prepared by uniformly mixing the selenium-rich coal gangue powder, limestone powder and ferrous sulfate according to the proportion of 100:100 and 300: 30-50. In the method, the combined action of the selenium-rich gangue powder, the limestone powder and the ferrous sulfate provides a selenium source, ensures the storage of the selenium dissolved from the gangue powder, and releases the selenium to play a role when the rice needs a large amount of selenium, thereby avoiding the loss of irrigation water and rainwater, improving the utilization rate of the selenium and enabling the selenium content of the produced rice to meet the selenium content requirement of selenium-rich products when the produced rice is processed into brown rice and rice. Meanwhile, the selenium enrichment process also reduces the absorption of heavy metals in soil, fertilizers and irrigation water by rice plants, thereby reducing the heavy metal content of the obtained brown rice and rice.
Description
Technical Field
The invention belongs to the technical field of grain processing, and particularly relates to a planting method of selenium-rich rice.
Background
The rice is an important grain crop in China, and the rice is one of basic staple foods of people; selenium-rich rice with health care function has recently attracted attention. Generally, the rice containing 0.04-0.30mg/kg of selenium is considered to be selenium-rich rice.
Selenium is an indispensable trace element for maintaining the normal functions of human bodies, and the selenium deficiency of the human bodies can cause various diseases. According to research, selenium has the effects of improving the oxidation resistance of organisms, enhancing the immune function of human bodies, effectively removing garbage in the bodies, promoting the health of the human bodies, delaying senescence and the like. The daily required selenium intake recommended by the Chinese academy of nutrition is 50-250 micrograms, depending on the individual's physical condition; too much selenium supplement is not good, and some harm is easily brought.
The selenium content of most rice produced in China is lower than 0.030mg/kg, and the selenium intake required by the human body normally cannot be met frequently. It has been counted that 72% of the nationwide regions belong to selenium-deficient or low-selenium regions, and the population above 2/3 has insufficient selenium intake in different degrees.
In areas with less selenium content in soil, selenium-rich nutrient solution can be sprayed on the leaf surfaces of rice in the stage from ear sprouting to grain filling, and the selenium-rich rice is produced through plant absorption and biotransformation, but the effect can be achieved by a small amount of times, so that the problems of high cost and unreliable effect exist, for example, the leaf surface spraying effect and the rice plant absorption effect are influenced by heavy rain or strong wind, and the limited factors are more.
During rice field preparation, selenium-containing mineral powder meeting the fertilizer quality requirements, such as selenium-rich coal gangue produced by Enshi in Hubei province, is ground into powder and mixed with a base fertilizer for application, so that the produced rice can be rich in selenium, but the selenium in the selenium-rich coal gangue powder is easy to dissolve out and is easy to lose when irrigation water or rainwater is more, so that the utilization rate of the selenium is reduced, and the time for rice plants to absorb a large amount of selenium is after rice seedlings grow to a larger size.
Disclosure of Invention
In order to solve the technical problem, the invention provides a method for planting selenium-rich rice, which comprises the step of applying selenium fertilizer containing selenium-rich coal gangue powder together with a base fertilizer during rice field preparation, and is characterized in that the selenium fertilizer is prepared by uniformly mixing the selenium-rich coal gangue powder, limestone powder and ferrous sulfate according to the proportion of 100:100 plus materials 300: 30-50.
In the method, the fineness of the selenium-rich coal gangue powder is preferably 80-200 meshes, the selenium-rich coal gangue powder is slowly dissolved out when being too coarse, a large application amount is needed to achieve a selenium supply effect, and the grinding cost is high when being too fine. The selenium content in the selenium-rich coal gangue powder with proper cost performance is 100-1000mg/kg, and the selenium-rich coal gangue powder also contains a large amount of humus carbon, so that soil organic matters can be increased, the soil fertility of a rice field is improved, and the selenium-rich coal gangue powder also contains trace elements such as molybdenum, boron, zinc and the like. Selenium-rich coal gangue powder with the heavy metal content lower than or in accordance with the requirements of GB/T23349-. The selenium fertilizer is calculated by selenium-rich coal gangue powder, the application amount can be 80-200 kg/mu, and is determined according to the selenium content and the prior application experience.
The limestone powder has the fineness of at least 60 meshes, preferably more than 100 meshes, so as to have larger surface area and activity, and the coarse powder and the fine powder are mixed when the soil in the rice field is more acidic; the limestone powder has the functions of gently reducing the acidity of the paddy field soil and improving the pH value of the soil, and reacts with ferrous sulfate to generate ferric hydroxide colloid which can adsorb and store selenium gradually dissolved out from the selenium-rich coal gangue powder; the calcium dissolved out by the limestone powder can also inhibit the dissolution concentration of heavy metals in soil and reduce the absorption of heavy metals by rice plants.
Ferrous sulfate reacts with a part of limestone powder to generate hydroxide colloid of calcium sulfate and iron in the fertilizer mixing process and after being applied to water-containing soil, and a part of the hydroxide colloid and soil components generate iron hydroxide colloid; the ferric hydroxide colloid can also have a remarkable promoting effect on the initial formation and perfection of the root surface iron shell of the rice new root system, and the root surface iron shell can play a good blocking effect on the absorption of heavy metals, so that the absorption of the heavy metals by rice plants is inhibited.
The ferrous sulfate can be ferrous sulfate monohydrate or ferrous sulfate heptahydrate, and has a remarkable promoting effect on the initial formation of the surface iron shell of the rice root. The ferrous sulfate heptahydrate comprises a byproduct ferrous sulfate heptahydrate of a titanium dioxide device in a sulfuric acid method, the ferrous sulfate heptahydrate is low in price, the contained titanium, manganese and magnesium sulfates are also nutrient elements required by the growth of rice, and the byproduct ferrous sulfate heptahydrate of the titanium dioxide device in the sulfuric acid method meeting the GB/T23349-2009 quality requirement is easy to purchase.
In the method, the combined action of the selenium-rich gangue powder, the limestone powder and the ferrous sulfate provides a selenium source, ensures the storage of the selenium dissolved from the gangue powder, and releases the selenium to play a role when the rice needs a large amount of selenium, thereby avoiding the loss of irrigation water and rainwater, improving the utilization rate of the selenium and enabling the selenium content of the produced rice to meet the selenium content requirement of selenium-rich products when the produced rice is processed into brown rice and rice. Meanwhile, the selenium enrichment process also reduces the absorption of heavy metals in soil, fertilizers and irrigation water by rice plants, thereby reducing the heavy metal content of the obtained brown rice and rice.
In the method, the base fertilizer comprises organic fertilizer, precipitated calcium phosphate, calcium magnesium phosphate fertilizer, powdered rock phosphate and other fertilizers, and the effect of the selenium-rich coal gangue powder, limestone powder and ferrous sulfate mixed selenium fertilizer is basically not influenced.
Detailed Description
The technical solution of the present invention will be specifically described and illustrated by examples below.
Examples 1 to 5
The selenium fertilizer of each embodiment is prepared according to the mixture ratio listed in table 1, and the selenium-rich coal gangue powder, limestone powder and ferrous sulfate are uniformly mixed according to the listed mass ratio to prepare the selenium fertilizer. The fineness of the selenium-rich coal gangue powder is 100 meshes, the selenium content is 160mg/kg, the humic carbon content is about 37 percent, and the contents of heavy metals such as lead 17mg/kg, arsenic 20mg/kg, cadmium 9mg/kg, chromium 18mg/kg and mercury 5mg/kg meet the requirements of GB/T23349-. Limestone powder with fineness of 100 meshes contains 98% of calcium carbonate, 1.2% of magnesium carbonate and 0.5% of ferric oxide. Ferrous sulfate heptahydrate is a byproduct of a titanium dioxide device by a sulfuric acid method, is a crystalline granular material, has the grain size of about 1.3mm, and has the heavy metal contents of 90 percent, 2.1 percent of magnesium sulfate, 0.8 percent of magnesium sulfate, 0.6 percent of titanyl sulfate, 43mg/kg of lead, 8mg/kg of arsenic, 6mg/kg of cadmium, 60mg/kg of chromium, 3mg/kg of mercury and the like which meet the requirements of GB/T23349-.
Table 1 example 1-6 mass ratio of selenium fertilizer
Comparative examples 1 to 5
Comparative fertilizers of various proportions were prepared using the raw materials used in examples 1-5 in the mass ratios listed in table 2.
Table 2 mass ratio of comparative examples 1 to 5 comparative fertilizers
Application example
Planting rice in a test field divided into 333m each in Hunan province2(0.5 mu) of the test field, the rice variety Jinyou 207. The selenium fertilizer or the contrast fertilizer of each embodiment and the comparative example is applied together with the fermented organic fertilizer as the base fertilizer when the rice field is finished before rice transplanting, the application amount of the fermented organic fertilizer is 500 kg/mu, the application amount of the selenium fertilizer and the selenium-containing contrast fertilizer is 100 kg/mu according to the selenium-rich coal gangue powder, the application amount of the selenium-free contrast fertilizer is 240 kg/mu in the comparative example 5, and water is filled to the depth of 2-3cm after the rice field is finished. And applying any selenium fertilizer or contrast fertilizer at the end of a blank test, and only applying 500 kg/mu of the fermented organic fertilizer.
During the test period, field management including topdressing and pest control are carried out according to a conventional method.
The rice obtained after harvesting the rice in each test field was processed into polished rice, and the selenium content and heavy metal content of the polished rice were as shown in tables 3 and 4.
TABLE 3 metallic element content of polished rice obtained by applying selenium fertilizers of examples 1-6
TABLE 4 metallic element content of polished rice obtained by applying comparative examples 1 to 5 and blank test
Claims (9)
1. A method for planting selenium-rich rice comprises the step of applying a selenium fertilizer containing selenium-rich coal gangue powder together with a base fertilizer during rice field preparation, wherein the selenium fertilizer is prepared by uniformly mixing the selenium-rich coal gangue powder, limestone powder and ferrous sulfate according to the proportion of 100:100 and 300: 30-50.
2. The planting method of the selenium-rich rice as claimed in claim 1, wherein the selenium content in the selenium-rich coal gangue powder is 100-1000 mg/kg.
3. The planting method of the selenium-rich rice as claimed in claim 1, wherein the heavy metal content of the selenium-rich coal gangue powder meets the requirement of GB/T23349-.
4. The planting method of the selenium-rich rice as claimed in claim 1, wherein the selenium fertilizer is applied in an amount of 80-200 kg/mu in terms of selenium-rich gangue powder.
5. The planting method of the selenium-rich rice as claimed in claim 1, wherein the fineness of the selenium-rich gangue powder is 80-200 meshes.
6. The planting method of the selenium-rich rice as claimed in claim 1, wherein the fineness of the limestone powder is more than 100 meshes.
7. The method for planting the selenium-enriched rice as claimed in claim 1, wherein the ferrous sulfate is ferrous sulfate monohydrate or ferrous sulfate heptahydrate.
8. The planting method of the selenium-rich rice as claimed in claim 7, wherein the ferrous sulfate heptahydrate is a byproduct of a titanium dioxide device by a sulfuric acid method.
9. The method for planting the selenium-enriched rice as claimed in claim 1, wherein the base fertilizer comprises organic fertilizer, precipitated calcium phosphate, calcium magnesium phosphate fertilizer and ground phosphate rock.
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|---|---|---|---|
| CN201911177222.XA CN112840980A (en) | 2019-11-26 | 2019-11-26 | Planting method of selenium-rich rice |
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| CN201911177222.XA CN112840980A (en) | 2019-11-26 | 2019-11-26 | Planting method of selenium-rich rice |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102771296A (en) * | 2012-08-15 | 2012-11-14 | 苏州硒谷科技有限公司 | Method for improving selenium-containing fertilizer absorption and utilization rates of rice |
| CN103819264A (en) * | 2014-01-26 | 2014-05-28 | 苏州硒谷科技有限公司 | Special rice selenium fertilizer and preparation method thereof, and method for producing selenium-rich rice |
| WO2015109570A1 (en) * | 2014-01-26 | 2015-07-30 | 苏州硒谷科技有限公司 | Oryza sativa dedicated selenium fertilizer and method for preparing and producing selenium-rich rice using same |
| CN105265259A (en) * | 2014-06-26 | 2016-01-27 | 重庆皇华种业股份有限公司 | Cultivation method for selenium-rich ratoon rice |
| CN107409884A (en) * | 2017-09-12 | 2017-12-01 | 绵阳仙特米业有限公司 | The implantation methods of selenium-rich rice |
| CN107779196A (en) * | 2016-08-30 | 2018-03-09 | 中国科学院地理科学与资源研究所 | A kind of preparation and application of soil heavy metal combined passivator |
-
2019
- 2019-11-26 CN CN201911177222.XA patent/CN112840980A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102771296A (en) * | 2012-08-15 | 2012-11-14 | 苏州硒谷科技有限公司 | Method for improving selenium-containing fertilizer absorption and utilization rates of rice |
| CN103819264A (en) * | 2014-01-26 | 2014-05-28 | 苏州硒谷科技有限公司 | Special rice selenium fertilizer and preparation method thereof, and method for producing selenium-rich rice |
| WO2015109570A1 (en) * | 2014-01-26 | 2015-07-30 | 苏州硒谷科技有限公司 | Oryza sativa dedicated selenium fertilizer and method for preparing and producing selenium-rich rice using same |
| CN105265259A (en) * | 2014-06-26 | 2016-01-27 | 重庆皇华种业股份有限公司 | Cultivation method for selenium-rich ratoon rice |
| CN107779196A (en) * | 2016-08-30 | 2018-03-09 | 中国科学院地理科学与资源研究所 | A kind of preparation and application of soil heavy metal combined passivator |
| CN107409884A (en) * | 2017-09-12 | 2017-12-01 | 绵阳仙特米业有限公司 | The implantation methods of selenium-rich rice |
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Application publication date: 20210528 |