CN102804963A - Method for increasing absorption and utilization ratio of selenium-containing fertilizer under dry farming condition - Google Patents
Method for increasing absorption and utilization ratio of selenium-containing fertilizer under dry farming condition Download PDFInfo
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- CN102804963A CN102804963A CN2012102882680A CN201210288268A CN102804963A CN 102804963 A CN102804963 A CN 102804963A CN 2012102882680 A CN2012102882680 A CN 2012102882680A CN 201210288268 A CN201210288268 A CN 201210288268A CN 102804963 A CN102804963 A CN 102804963A
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Abstract
The invention discloses a method for increasing the absorption and utilization ratio of selenium-containing fertilizer under a dry farming condition. On the basis that the selenium-containing fertilizer is applied to soil, a selenium transformation accelerator and a selenium absorption accelerator are further applied to the soil. On the one hand, the transformation of a selenium-containing compound to selenate or selenite is promoted; and on the other hand, excessive H ions released by crop roots and used for being exchanged for cations are absorbed and combined to promote the absorption of selenium, so that the utilization ratio of a selenium nutritional agent can be increased by above 50 percent, the cost can be saved and the selenium are effectively enriched.
Description
Technical field
The present invention relates to improve the method that contains the selenium fertilizer absorption rate under a kind of dry farming condition, belong to agricultural fertilizer and agronomic technique field.
Technical background
Selenium, symbol of element Se is a kind of micro elements needed by human, is the activated centre of glutathione peroxidase (GSH-Px).Have cancer-resisting, anti-oxidant anti-aging and biological propertyes such as raising body immunity, antagonism heavy metal.Selenium in the food chain is mainly derived from soil.Se content is pockety in the soil of different regions, and the local poor selenium soil clue of foundation is implemented and carried out rich targetedly selenium work, and the Se content level of optimizing in the food chain is an important directions of agricultural production research.There are 72% low selenium in county (city) or scarce selenium in China, and Heilungkiang, the Inner Mongol, Gansu, Qinghai, Sichuan etc. seriously lack the selenium area has Keshan disease, Kaschin-Beck disease to take place, and certain cancers district occurred frequently (like the Jiangsu Qidong City) also belongs to low selenium district.Chinese Soclety of Nutrition recommends that every day, selenium intake was the 50-200 microgram per capita.But China adult's day selenium intake only has the 26-32 microgram now, and therefore, the selemium nutrition condition of poor is at China's ubiquity.
Se-rich farm products is a human body Selenium Supplement element effective way.Therefore, technique of enriched selenium is scientists study exploitation and the hot fields of putting into actual production.Tea tree itself has enriching preferably to selenium, and its Se content level has very big influence to whole people's selemium nutrition situation.
At present domesticly had that rich selenium district produces, foliage-spray contains selenium fertilizer, soil root is executed the method that methods such as containing selenium fertilizer is carried out Se-rich farm products.But the method for the rich selenium product of producing in rich selenium district receives the region restriction, and the standardization of products and integrated also is restricted; Foliage-spray weather and environmental change to external world is responsive, and constant product quality property is not high, and soil is executed and contained selenium fertilizer and then exist se use efficiency not high, and waste is comparatively serious, the too high problem of cost.
Summary of the invention
The present invention provides and improves the method that contains the selenium fertilizer absorption rate under a kind of dry farming condition, solves existing executing through root and contains in the selenium fertilizer production technology, contains the lower present situation of selenium fertilizer absorption rate.Can improve and contain the selenium fertilizer absorption rate more than 50%.
The technical scheme that the present invention adopted is: in soil, use contain selenium fertilizer after, in soil, apply selenium inversion accelerating agent and selenium sorbefacient again.Wherein the selenium inversion accelerating agent is meant and can promotes to contain agrochemical or other chemical substances that selenium compound in the selenium fertilizer transforms to selenate or selenite; The selenium sorbefacient is meant adsorbable or combines crop root to discharge, in order to the excessive H of exchange cation
+Agrochemical or other materials.
The above-mentioned selenium fertilizer that contains can be one or more mixing with arbitrary proportion in selenite, selenate, seleniferous mineral and the machining object thereof, can also be nanometer selenium plant nutrient agent (Suzhou selenium paddy Science and Technology Ltd. produces, product type XGP001A).
As preferably, the selenium fertilizer that contains of the present invention is nanometer selenium plant nutrient agent (Suzhou selenium paddy Science and Technology Ltd. produces, and model is XGP001A).
The selenium inversion accelerating agent is to contain the microenvironment of selenium fertilizer in soil through change, under the dry farming condition, makes the selenium form that contains in the selenium fertilizer to being beneficial to the chemical form conversion that root system of plant absorbs.And the change rhizosphere environment, avoid that existing plant effective state selenium (chemical form that root system of plant can directly absorb) is converted into other forms in the soil.Can be water-soluble alkaline chemical fertilizer or physiological alkalinity chemical fertilizer, like potash, nitrate of lime, sodium nitrate etc., also can be various alkali compoundss commonly used, like potassium hydroxide, sodium hydroxide, calcium oxide etc.
The selenium sorbefacient is through absorption or combine excessive H
+, promote the ion exchange of biological effectiveness, thereby promote to absorb.Can be the physiological alkalinity chemical fertilizer, like nitrate of lime, sodium nitrate etc.
Action principle is among the present invention: the selenium form that root system of plant can directly absorb mainly is selenite radical and selenate radical ion.Seleno oxide combines the hydroxide ion in the soil can form selenite in alkaline environment, and selenite can further be oxidized to selenate under the dry farming condition, and the both is the selenium form that root system can directly absorb.Therefore, the microenvironment of alkalescence can promote to contain the selenium of other forms in the selenium fertilizer, transforms to root system of plant attitude capable of using, and then improves the absorption rate that contains selenium fertilizer.
Other form selenium are prone to the form transformation chemical reaction mechanism of absorption in the soil to plant:
Root system of plant absorbs mineral ions in soil realizes through cation exchange.Therefore, root system of plant can discharge a large amount of H
+Enter into rhizosphere environment, a large amount of H
+Can cause existing selenite radical ion to be reduced into simple substance selenium, and then reduce the content of attitude selenium capable of using in the soil, further reduce the absorb efficient of plant selenium.
Excessive H in the soil
+The chemical reaction mechanism that causes attitude selenium capable of using to be reduced:
Therefore, in soil, add and a certain amount ofly absorb or combine H
+Material, the excessive H that root system of plant is discharged
+Neutralization; Plant can be reduced and the speed of the selenium form of attitude can be absorbed to other form transformation; And then keep the content of attitude selenium capable of using in the plant rhizosphere soil, root system of plant is absorbed selenium play the effect that positive direction promotes, thereby improve the absorption rate that contains selenium fertilizer.
Beneficial effect of the present invention is: under the dry farming situation, through in soil, using selenium inversion accelerating agent and selenium sorbefacient, can increase the absorption rate of plant to selenium greatly, on original nutritional agents basis, improve se use efficiency more than 50%.
Embodiment
Specify the present invention below in conjunction with embodiment, but said embodiment is not used for limiting the scope of the invention.
Embodiment 1
On certain wheat planting ground, the mixture conduct that preparation contains sodium selenite that selenium concentration is 2000 mg/kg and soil contains selenium fertilizer.The above-mentioned selenium fertilizer that contains is mixed with ratio and the nitrogen-phosphorus-potassium compound fertilizer of 4 ︰ 26; As base manure; Consumption according to 32 kg/ mus; Promptly apply and contain selenium fertilizer in selenium 8 g/ mus, simultaneously mixed applying with contain the selenium fertilizer mass ratio be the potash of 1:2 in order to change fertilizer surrounding soil microenvironment, promote selenium fertilizer to effective form transformation.Be provided with simultaneously and only use the above-mentioned control group that contains selenium fertilizer of equivalent.Detect Se content behind the harvesting wheat.
Through detecting, Se content is 0.112 mg/kg ~ 0.129 mg/kg in the wheat, average 0.120 mg/kg, and control group is merely about 0.08 mg/kg.
Embodiment 2
At certain pear tree planting site; The mixture conduct that preparation contains sodium selenate that selenium concentration is 4500 mg/kg and soil contains selenium fertilizer; According to the consumption of 10 kg/ mus, promptly in selenium 45 g/ mus apply contain selenium fertilizer after, use nitrogen-phosphorus-potassium compound fertilizer in the ratio of 4 ︰ 26 again; Simultaneously mixed applying with contain the selenium fertilizer mass ratio be the calcium oxide of 1:2 in order to change fertilizer surrounding soil microenvironment, promote selenium fertilizer to effective form transformation.Be provided with simultaneously and only use the above-mentioned control group that contains selenium fertilizer of equivalent.Se content is detected in pears results back.
Through detecting, Se content is average 18 μ g/kg in the pears, and control group is merely about 8 μ g/kg.
Embodiment 3
At certain vine planting site; The mixture conduct that preparation contains sodium selenate that selenium concentration is 4500 mg/kg and soil contains selenium fertilizer; Using before this contains selenium fertilizer; Use slaked lime in containing selenium fertilizer and slaked lime with the ratio of 4 ︰ 10,, promptly apply and contain selenium fertilizer in selenium 45 g/ mus afterwards according to the consumption of 10 kg/ mus; Use again with contain the selenium fertilizer mass ratio be the sodium nitrate of 1:2 in order to change the soil microenvironment, promote selenium fertilizer to effective form transformation.Be provided with simultaneously and only use the above-mentioned control group that contains selenium fertilizer of equivalent.Detect Se content after the vintage.
Through detecting, Se content is average 26 μ g/kg in the pears, and control group is merely about 10 μ g/kg.
Embodiment 4
At certain vegetables tree planting site; The mixture conduct that preparation contains nanometer selenium plant nutrient agent that selenium concentration is 2000 mg/kg and soil contains selenium fertilizer, using before this contains selenium fertilizer, uses slaked lime in containing selenium fertilizer and slaked lime with the ratio of 4 ︰ 10; And to use and contain the selenium fertilizer mass ratio be that the sodium nitrate of 1:2 is in order to change the soil microenvironment; Again according to the consumption of 5 kg/ mus, promptly apply and contain selenium fertilizer in selenium 10 g/ mus, mix simultaneously and promote selenium fertilizer to effective form transformation.Be provided with simultaneously and only use the above-mentioned control group that contains selenium fertilizer of equivalent.Se content is detected in vegetables results back.
Through detecting, Se content is average 20 μ g/kg in the vegetables, and control group is merely about 10 μ g/kg.
Claims (10)
1. improve the method that contains the selenium fertilizer absorption rate under a dry farming condition, it is characterized in that: contain the selenium fertilizer except that in soil, using, also in soil, apply selenium inversion accelerating agent and selenium sorbefacient.
2. improve the method that contains the selenium fertilizer absorption rate under a kind of dry farming condition according to claim 1, it is characterized in that: the said selenium fertilizer that contains can be one or more mixing with arbitrary proportion in selenite, selenate, seleniferous mineral and the machining object thereof; It can also be the nanometer selenium plant nutrient agent.
3. improve the method that contains the selenium fertilizer absorption rate under a kind of dry farming condition according to claim 1, it is characterized in that: the said selenium fertilizer that contains is the nanometer selenium plant nutrient agent.
4. improve the method that contains the selenium fertilizer absorption rate under a kind of dry farming condition according to claim 1, it is characterized in that: said selenium inversion accelerating agent is meant and can promotes agrochemical or other chemical substance of selenium-containing compound to selenate or selenite conversion.
5. improve the method that contains the selenium fertilizer absorption rate under a kind of dry farming condition according to claim 1, it is characterized in that: said selenium inversion accelerating agent is water-soluble alkaline chemical fertilizer or physiological alkalinity chemical fertilizer, perhaps various alkali compoundss commonly used.
6. improve the method contain the selenium fertilizer absorption rate under a kind of dry farming condition according to claim 1, it is characterized in that: said selenium inversion accelerating agent is that one or more of potash, nitrate of lime, sodium nitrate, potassium hydroxide, sodium hydroxide, calcium oxide mix with arbitrary proportion.
7. improve the method that contains the selenium fertilizer absorption rate under a kind of dry farming condition according to claim 1; It is characterized in that: said selenium sorbefacient is meant adsorbable or combines crop root to discharge, in order to the water-soluble alkaline chemical fertilizer of the excessive H+ of exchange cation.
8. improve the method that contains the selenium fertilizer absorption rate under a kind of dry farming condition according to claim 1, it is characterized in that: said selenium sorbefacient is nitrate of lime or sodium nitrate.
9. improve the method contain the selenium fertilizer absorption rate under a kind of dry farming condition according to claim 1, it is characterized in that: being applied in of said selenium sorbefacient and selenium inversion accelerating agent contain selenium fertilizer use before, use afterwards or simultaneously.
10. improve the application of method in Se-rich farm products is produced that contains the selenium fertilizer absorption rate among the claim 1-9 under each described a kind of dry farming condition.
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| CN2012102882680A CN102804963A (en) | 2012-08-15 | 2012-08-15 | Method for increasing absorption and utilization ratio of selenium-containing fertilizer under dry farming condition |
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| CN2012102882680A CN102804963A (en) | 2012-08-15 | 2012-08-15 | Method for increasing absorption and utilization ratio of selenium-containing fertilizer under dry farming condition |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103980029A (en) * | 2014-02-12 | 2014-08-13 | 宁波中敬生物科技有限公司 | Slow-release selenium fertilizer and preparation method thereof |
| CN104072306A (en) * | 2014-07-24 | 2014-10-01 | 广东省农业科学院农业资源与环境研究所 | Stabilized selenium-enriched fertilizer and preparation method thereof |
| CN107135761A (en) * | 2017-04-17 | 2017-09-08 | 山西莲芯硒美农业科技开发有限公司 | A kind of production method of selenium-rich millet |
| CN108329072A (en) * | 2018-03-16 | 2018-07-27 | 安徽硒谷生物科技有限公司 | Selenium sand melon Special selenium fertilizer and its method for producing selenium-rich selenium sand melon |
| CN108370698A (en) * | 2018-03-09 | 2018-08-07 | 贺州学院 | A kind of microorganism selenium-rich fertilizer and its selenium-rich implantation methods for irrigating mandarin orange |
| CN111704502A (en) * | 2020-07-06 | 2020-09-25 | 广东省农业科学院农业资源与环境研究所 | Special synergistic selenium-rich fertilizer for acid soil and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103980029A (en) * | 2014-02-12 | 2014-08-13 | 宁波中敬生物科技有限公司 | Slow-release selenium fertilizer and preparation method thereof |
| CN103980029B (en) * | 2014-02-12 | 2016-05-11 | 宁波中敬生物科技有限公司 | A kind of slowly-releasing selenium fertilizer and preparation method thereof |
| CN104072306A (en) * | 2014-07-24 | 2014-10-01 | 广东省农业科学院农业资源与环境研究所 | Stabilized selenium-enriched fertilizer and preparation method thereof |
| CN104072306B (en) * | 2014-07-24 | 2016-04-13 | 广东省农业科学院农业资源与环境研究所 | A kind of stable form fertilizer rich in selenium and preparation method thereof |
| CN107135761A (en) * | 2017-04-17 | 2017-09-08 | 山西莲芯硒美农业科技开发有限公司 | A kind of production method of selenium-rich millet |
| CN108370698A (en) * | 2018-03-09 | 2018-08-07 | 贺州学院 | A kind of microorganism selenium-rich fertilizer and its selenium-rich implantation methods for irrigating mandarin orange |
| CN108329072A (en) * | 2018-03-16 | 2018-07-27 | 安徽硒谷生物科技有限公司 | Selenium sand melon Special selenium fertilizer and its method for producing selenium-rich selenium sand melon |
| CN111704502A (en) * | 2020-07-06 | 2020-09-25 | 广东省农业科学院农业资源与环境研究所 | Special synergistic selenium-rich fertilizer for acid soil and preparation method thereof |
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Application publication date: 20121205 |