CN108249976A - A kind of method using selenium ore deposit production high-concentration water-soluble foliar fertilizer containing selenium - Google Patents

A kind of method using selenium ore deposit production high-concentration water-soluble foliar fertilizer containing selenium Download PDF

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Publication number
CN108249976A
CN108249976A CN201810026830.XA CN201810026830A CN108249976A CN 108249976 A CN108249976 A CN 108249976A CN 201810026830 A CN201810026830 A CN 201810026830A CN 108249976 A CN108249976 A CN 108249976A
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Prior art keywords
selenium
soluble
water
foliar fertilizer
containing selenium
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CN201810026830.XA
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Inventor
邱国红
孙学成
刘新伟
杨雄
刘立虎
赵竹青
谭文峰
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Huazhong Agricultural University
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Huazhong Agricultural University
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    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05C—NITROGENOUS FERTILISERS
    • C05C3/00—Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G5/00—Fertilisers characterised by their form
    • C05G5/20—Liquid fertilisers
    • C05G5/23—Solutions

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Fertilizers (AREA)

Abstract

The invention discloses a kind of methods using selenium ore deposit production high-concentration water-soluble foliar fertilizer containing selenium, it includes the following steps：(1) selenium ore deposit is taken, is ground, after sieving, by solid-liquid mass volume ratio 1:2 20 add in activator, separation of solid and liquid after 12 are stirred at 10 80 DEG C for 24 hours；(2) insoluble solids are filtered off, collect filtrate, lye is added in into filtrate, adjust pH to 67, the heavy metal hydroxide precipitation of indissoluble is filtered off, collects filtrate, obtain water-soluble stoste containing selenium；(3) addition ammonium molybdate, zinc sulfate and urea into water-soluble stoste containing selenium, stir to solution and clarify, you can obtain high-concentration water-soluble foliar fertilizer containing selenium.Foliar fertilizer prepared by the present invention can improve the nutritive element contents such as zinc, molybdenum, selenium in crop yield, plant height and crop, have many advantages, such as that fertilizer efficiency is fast, quality is high, can meet selenium-rich crops production requirement.

Description

A kind of method using selenium ore deposit production high-concentration water-soluble foliar fertilizer containing selenium
Technical field
The invention belongs to fertilizer fields, and in particular to a kind of preparation method of high-concentration water-soluble foliar fertilizer containing selenium.
Background technology
Selenium is people and trace element, human body selenium deficiency and Keshan disease, cardiovascular disease, cataract and diabetes etc. necessary to animal The morbidity of a variety of diseases is closely related.The problem of more ground soil in the whole world is widely present selenium deficiency, the area for having 2/3 belongs to selenium deficiency Band, there are different degrees of selenium deficiency for the counties and cities in China about 72%, lead to the universal selenium deficiency state on food chain.To improve human body Selenium deficiency situation, it is one of measure for generally taking with the Se content increased in agricultural product to carry out selenium-supply using selenium fertilizer.
The content of selenium is low in nature, and distribution is extremely uneven, it is difficult to be used directly.Its manufactured goods Na2SeO3Again Have certain toxicity, using be easy to causeing human body and animal poisoning accidentally, and scarcity of resources and it is expensive.Therefore, using selenium Miberal powder is a safe and efficient important measures to crops selenium-supply.But water soluble selenium content is low in selenium ore deposit, is planted when directly applying Object is very low to the utilization ratio of selenium mineral powder selenium, it is difficult to meet in crop the needs of Se content.Activation process can improve water-soluble Property selenium content, increase crop to the utilization rate of selenium.Directly water soluble selenium is prepared at low cost, operable using the activation of selenium ore deposit Property the advantages such as strong and application is wide.Existing selenium ore deposit activating technology is usually relatively low to the activation rate of selenium, and there are severe reaction conditions, High energy consumption, complex process, the shortcomings of being readily incorporated heavy metal pollution.For this purpose, it is prepared in a mild condition using selenium ore deposit highly concentrated The simplification technology of the water-soluble stoste containing selenium of degree also needs to further study.
Invention content
The object of the present invention is to provide a kind of methods using selenium ore deposit production high-concentration water-soluble foliar fertilizer containing selenium, it is intended to solve Certainly water soluble selenium content is low in selenium ore deposit, preparation process is complicated and preparation process in introduce the problems such as heavy metal ion.
The technical solution adopted in the present invention is as follows：
A kind of method using selenium ore deposit production high-concentration water-soluble foliar fertilizer containing selenium, this method include the following steps：
(1) selenium ore deposit is taken, is ground, after sieving, by solid-liquid mass volume ratio 1:2-20 adds in activator, is stirred at 10-80 DEG C Mix separation of solid and liquid after 12-24h；
(2) insoluble solids are filtered off, collect filtrate, lye is added in into filtrate, adjust pH to 6-7, filter off a huge sum of money for indissoluble Belong to hydroxide precipitation, collect filtrate, obtain water-soluble stoste containing selenium；
(3) addition ammonium molybdate, zinc sulfate and urea into water-soluble stoste containing selenium, stir to solution and clarify, you can obtain High-concentration water-soluble foliar fertilizer containing selenium,
The activator is L containing 0.5-5mol-1HNO3With 0.5-5mol L-1H2O2Mixed solution；
The additive amount of ammonium molybdate, zinc sulfate and urea is respectively in every liter of water solubility stoste containing selenium：Ammonium molybdate 5-8g, sulfuric acid Zinc 10-15g, urea 30-50g.
Preferably, the lye is 1.0-10mol L-1KOH or NaOH solution.
Preferably, the sieving described in step (1) is sieves with 100 mesh sieve.
A kind of method for improving crop Se content and yield, the high-concentration water-soluble leaf containing selenium that will be produced according to the method described above It is directly sprayed onto on the blade of crop after leaven dilution.
Preferably, the extension rate is 10-100 times.
The beneficial effects of the invention are as follows：
(1) preparation method provided by the invention is simple for process, at low cost, is not introduced into poisonous and harmful substance, the blade face of acquisition Fertile Se content is high, and the content of heavy metal such as Mn, Cd, Cu are low, therefore not only contribute to plant growth, and are conducive to human body and are good for Health.
(2) foliar fertilizer prepared by the present invention can improve crop yield, plant height also containing suitable molybdenum and zinc and other elements And the nutritive element contents such as zinc, molybdenum, selenium in crop, the present invention have many advantages, such as that fertilizer efficiency is fast, quality is high, can meet selenium-rich work Object production requirement.
Specific embodiment
For the objects and effects of the present invention is made definitely to be described further below to the present invention, example is only used In explaining the present invention, it is not intended to limit the present invention.
Embodiment 1
(1) selenium ore deposit is taken, is ground, after sieving with 100 mesh sieve, by solid-liquid mass volume ratio 1:2 add in activator, are stirred at 30 DEG C Separation of solid and liquid after for 24 hours；
(2) insoluble solids are filtered off, collect filtrate, 10mol L are added in into filtrate-1NaOH solution adjusts pH to 7, filters off The heavy metal hydroxide precipitation of indissoluble, collects filtrate, obtains water-soluble stoste containing selenium；
(3) addition ammonium molybdate, zinc sulfate and urea into water-soluble stoste containing selenium, stir to solution and clarify, you can obtain High-concentration water-soluble foliar fertilizer containing selenium.
The activator is L containing 5mol-1HNO3With 5mol L-1H2O2Mixed solution.
The additive amount of ammonium molybdate, zinc sulfate and urea is respectively in every liter of water solubility stoste containing selenium：Ammonium molybdate 5g, zinc sulfate 15g, urea 50g.
Embodiment 2
(1) selenium ore deposit is taken, is ground, after sieving with 100 mesh sieve, by solid-liquid mass volume ratio 1:5 add in activator, are stirred at 60 DEG C Separation of solid and liquid after 18h；
(2) insoluble solids are filtered off, collect filtrate, 5mol L are added in into filtrate-1KOH solution adjusts pH to 6.8, filters off The heavy metal hydroxide precipitation of indissoluble, collects filtrate, obtains water-soluble stoste containing selenium；
(3) addition ammonium molybdate, zinc sulfate and urea into water-soluble stoste containing selenium, stir to solution and clarify, you can obtain High-concentration water-soluble foliar fertilizer containing selenium.
The activator is L containing 3mol-1HNO3With 3mol L-1H2O2Mixed solution.
The additive amount of ammonium molybdate, zinc sulfate and urea is respectively in every liter of water solubility stoste containing selenium：Ammonium molybdate 6g, zinc sulfate 12g, urea 40g.
Embodiment 3
(1) selenium ore deposit is taken, is ground, after sieving with 100 mesh sieve, by solid-liquid mass volume ratio 1:20 add in activator, are stirred at 80 DEG C Mix separation of solid and liquid after 12h；
(2) insoluble solids are filtered off, collect filtrate, 1.0mol L are added in into filtrate-1KOH solution adjusts pH to 6, filters off The heavy metal hydroxide precipitation of indissoluble, collects filtrate, obtains water-soluble stoste containing selenium；
(3) addition ammonium molybdate, zinc sulfate and urea into water-soluble stoste containing selenium, stir to solution and clarify, you can obtain High-concentration water-soluble foliar fertilizer containing selenium.
The activator is L containing 0.5mol-1HNO3With 0.5mol L-1H2O2Mixed solution.
The additive amount of ammonium molybdate, zinc sulfate and urea is respectively in every liter of water solubility stoste containing selenium：Ammonium molybdate 8g, zinc sulfate 10g, urea 30g.
The water solubility stoste containing selenium obtained to embodiment 1-3 steps (2) is detected, and obtains the content of each element, as a result It is shown in Table 1.
The content table (mg/L) of other elements in 1 stoste containing selenium of table
Mn Cu Zn Cd Mg Fe Se
Embodiment 1 4.03 0.94 0.45 0.04 0.96 ND 172.18
Embodiment 2 2.12 0.23 0.68 0.01 ND ND 222.21
Embodiment 3 7.82 0.63 0.44 0.02 ND ND 122.18
Application of the application examples foliar fertilizer containing selenium on pakchoi
1) soil：Soil passes through natural air drying, and plastic tub is packed into after grinding sieving, the dress 2.5kg soil per basin, and prior to seeding 3 My god, respectively using urea, potassium dihydrogen phosphate, potassium sulfate as the source of manure, according to N 0.25g kg-1、P2O5 0.15g kg-1、K2O0.2g kg-1Standard disposably applied with base manure.
2) potting：This season pakchoi was sowed on April 30th, 2017,7 days after emergence, used the above-mentioned water of foliar fertilizer containing selenium Foliage-spray is carried out after diluting 100 times, 50 times and 10 times respectively, using clear water as control, compares the application effect of the foliar fertilizer containing selenium. It is carried out after when each spraying time should select calm fine day afternoon 3, so that foliar fertilizer or clear water are same in face of blade and the back side Sample uniformly sprays, be subject to pakchoi cauline leaf adhesional wetting but not lower drip.It is primary every sprinkling in 6 days, it is received on June 23rd, 2017 It obtains, and the growth indexes such as yield and plant height for measuring pakchoi, the results are shown in Table 2.
3) it tests：After the pakchoi sample deionized water of harvest is cleaned, by 105 DEG C of water-removings, and it is dried in 65 DEG C Constant weight is ground with stainless steel plant sample grinding machine, with atomic absorption detecting Mo, Zn contents after mixed acid method, uses atom fluorimetry Se contents.It the results are shown in Table 3.
Influence of the application of table 2 foliar fertilizer containing selenium to yield of pakchoi and plant height
Yield (kg/6 plants) Plant height (cm)
Embodiment 1 0.1563±0.0066 20.7525±0.3132
Embodiment 2 0.1988±0.0052 21.4475±0.3733
Embodiment 3 0.1625±0.0048 20.3975±0.3115
Control group 0.1337±0.0055 19.9675±0.2926
Influence of the application of table 3 foliar fertilizer containing selenium to pakchoi constituent content
Se(mg/kg) Zn(mg/kg) Mo(mg/kg)
Embodiment 1 3.45 126.83 204.09
Embodiment 2 5.79 199.84 195.51
Embodiment 3 4.07 112.89 148.61
Control group 0.44 42.19 0.75
As can be seen that foliar fertilizer containing selenium prepared by the present invention can improve yield of pakchoi, plant height from more than result of the test And the nutritive element contents such as zinc, molybdenum, selenium in pakchoi, the present invention have many advantages, such as that fertilizer efficiency is fast, effect is good, can meet selenium-rich Crop production requirement.

Claims (5)

  1. A kind of 1. method using selenium ore deposit production high-concentration water-soluble foliar fertilizer containing selenium, it is characterised in that include the following steps：
    (1) selenium ore deposit is taken, is ground, after sieving, by solid-liquid mass volume ratio 1:2-20 adds in activator, and 12- is stirred at 10-80 DEG C Separation of solid and liquid after for 24 hours；
    (2) insoluble solids are filtered off, collect filtrate, lye is added in into filtrate, adjust pH to 6-7, filter off the heavy metal hydrogen of indissoluble Oxide precipitation collects filtrate, obtains water-soluble stoste containing selenium；
    (3) addition ammonium molybdate, zinc sulfate and urea into water-soluble stoste containing selenium, stir to solution and clarify, you can obtain highly concentrated The water-soluble foliar fertilizer containing selenium of degree,
    The activator is L containing 0.5-5mol-1HNO3With 0.5-5mol L-1H2O2Mixed solution；
    The additive amount of ammonium molybdate, zinc sulfate and urea is respectively in every liter of water solubility stoste containing selenium：Ammonium molybdate 5-8g, zinc sulfate 10-15g, urea 30-50g.
  2. 2. the method according to claim 1 using selenium ore deposit production high-concentration water-soluble foliar fertilizer containing selenium, it is characterised in that： The lye is 1.0-10mol L-1KOH or NaOH solution.
  3. 3. the method according to claim 1 using selenium ore deposit production high-concentration water-soluble foliar fertilizer containing selenium, it is characterised in that： Sieving described in step (1) is sieves with 100 mesh sieve.
  4. A kind of 4. method for improving crop Se content and yield, it is characterised in that：It will be according to described in claim 1-3 any one It is directly sprayed onto on the blade of crop after high-concentration water-soluble foliar fertilizer containing the selenium dilution of method production.
  5. 5. the method for crop Se content and yield is improved according to claim 4, it is characterised in that：The extension rate is 10-100 times.
CN201810026830.XA 2018-01-11 2018-01-11 A kind of method using selenium ore deposit production high-concentration water-soluble foliar fertilizer containing selenium Pending CN108249976A (en)

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Cited By (4)

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CN109384239A (en) * 2018-10-29 2019-02-26 佛山市铁人环保科技有限公司 A kind of selenium zinc doping silica complex sol and its preparation method and application
CN109534868A (en) * 2018-11-14 2019-03-29 文华学院 Device and method based on fermentation method processing various heavy
CN109429656A (en) * 2018-11-30 2019-03-08 湖南袁禾农业科技有限公司 A kind of unmanned fog machine Micro trauma foliage-spray method
CN109429656B (en) * 2018-11-30 2021-08-27 湖南袁禾农业科技有限公司 Minimally invasive leaf surface spraying method for unmanned plant protection machine

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