CN104186150A - Method for cultivating corns rich in selenium, zinc and ferrum - Google Patents
Method for cultivating corns rich in selenium, zinc and ferrum Download PDFInfo
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Abstract
The invention discloses a method for cultivating corns rich in selenium, zinc and ferrum. During heading period of the corns, chelating fertilizer rich in selenium, zinc and ferrum is applied to soil for planting the corns, the chelating fertilizer rich in selenium, zinc and ferrum comprises chelating selenium salt, chelating zinc salt and chelating ferrum salt, the chelating agent of the chelating selenium salt is amino acid, and the chelating agent of the chelating zinc salt and the chelating agent of the chelating ferrum salt are ethylenediaminetetraacetic acid; the application amount of the chelating fertilizer rich in selenium, zinc and ferrum is determined according to selenium elements, zinc elements and ferrum elements in the chelating fertilizer, the application amount of the selenium elements ranges from 0.8 g/mu to 1.5 g/mu, the application amount of the zinc elements ranges from 80 g/mu to 150 g/mu, and the application amount of the ferrum elements ranges from 150 g/mu to 200 g/mu. The corn compound fertilizer is applied while the chelating fertilizer rich in selenium, zinc and ferrum is applied. Compared with a control group where only the fertilizer with one or two kinds of the selenium elements, the zinc elements and the ferrum elements is applied and a control group where only the corn compound fertilizer is applied, the content of selenium, the content of zinc and the content of ferrum in the corns harvested in the experimental group with the chelating fertilizer rich in selenium, zinc and ferrum applied are greatly improved.
Description
Technical field
The present invention relates to the cultivation method of corn, relate in particular to a kind of cultivation method of rich selenium zinc-iron corn.
Background technology
Selenium, zinc, iron are the requisite trace elements of human body, are nutrients indispensable in Chinese Soclety of Nutrition's diet nutritional every day tension metrics.Selenium strengthening body immunity, the aspect such as synthetic anti-oxidant, that regulate protein has important function.Human body lacks zinc can will cause immunity degradation, causes the various diseases such as Keshan disease, large joint, coronary heart disease.Zinc participates in the metabolism of multiple nutrients material in human body, is the part of plurality of enzymes or functional protein.Human body lacks zinc and there will be degradation phenomenon under immunity degradation, apocleisis, depauperation, intelligence.Iron is the constituent of haemoglobin, participates in the energy metabolism of human body directly; Iron deficiency will cause anaemia, and body immunity, locomitivity and intelligence development etc. are affected.
Corn is one of the cereal crops the most widely that distribute in the world, and cultivated area is only second to wheat and paddy rice and occupies the 3rd; Plantation distributed areas in China are vast, and gross annual output amount is large, and the output of China's conventional corn in 2013 reaches 21,500 ten thousand tons, are first cereal crops.Solve the mankind to the approach of micro-demand in, the bioaugmentation measure of corn trace element is one of most important approach.
Between conventional corn planting season, use farming measure, by reasonable assembly and the fertilizer of planning strategies for, increase trace elements of selenium, zinc, the accumulation of iron in seed, thereby raising corn selenium, zinc, iron content are a kind of continuable, safe and economic schemes.
The method of the rich selenium zinc-iron of domestic production at present nutrient corn mainly contains three kinds:
The one, at foliage-spray inorganic selenium or Organic Selenium solution.As Chinese patent CN 102106226 A " method for producing selenium-enriched corn " disclose a kind of corn growth stage foliage-spray high-purity sodium selenite aqueous solution; Chinese patent CN 103583216 A " high selenium cultivating method of crop and prepare the method for high selenium corn nutrient powder " have proposed a kind of corn growth stage method that repeatedly foliage-spray Organic Selenium solution is produced selenium-rich corn in addition, its advantage is that Crop is fast, but its shortcoming also clearly, because foliage-spray, leaves of plants is not main absorption of nutrient ingredients organ, absorbing capacity is limited, and selenium fertilizer is easy to trickle down to field, and field runoff water and soil is caused to certain pollution.
The 2nd, root is used selenium preparation.As Chinese patent CN 102771294 A " can quantitatively mend selenium fruit corn and production method thereof " disclose one at corn seeding and grown in early days, root is executed nanometer selenium preparation, absorbs selenium be also finally accumulated in corn fruit by corn root.Compared with foliage-spray, the Screening of high efficient paracetamolum of the method selenium is good.But maize root system is to ear to the pustulation period to the vigorous absorption of trace element period, described in the method corn seeding to tri-leaf period root execute selenium preparation, because corn is the crop that water requirement is larger, most selenium will run off in the time that corn growth is poured water in early days in a large number, if selenium preparation usage amount is few, in corn, the content of selenium is low, does not reach the object that makes the rich selenium of corn kernel; If make rich selenium in corn, must use in a large number selenium preparation, reach 5～20kg/ mu as using selenium preparation described in this patent, such amount of application, the availability of selenium is low, and pedo relict is larger.
The 3rd, base is executed, is imposed, foliage-spray selenium zinc fertilizer.As Chinese patent CN 103650853 A " cultivation method of a kind of rich selenium, Fu Xin, rich calcium corn " disclose the fertile immersion of a kind of selenium seed, inorganic selenium fertilizer executed by base and zinc fertilizer, pouring root impose selenium fertilizer, foliage-spray 2～6 selenium fertilizer, zinc fertilizer and calcareous fertilisers in vegetative period, thus selenium, zinc, the calcium content in corn improved.Obviously not only the availability of selenium, zinc is low for the method, and can be to field runoff water and soil is caused to certain pollution.
Summary of the invention
The present invention is directed to the deficiency of existing cultivation method, a kind of cultivation method of rich selenium zinc-iron corn is provided, and selenium, the zinc content of using the lower corn going out containing the fertilizer production of selenium, zinc, iron amount can reach relevant criterion eight kinds of elements such as (in NY 861-2004 grain (containing cereal, beans, potato class) and goods limit the quantity) lead, chromium, cadmium, mercury, selenium, arsenic, copper, zinc.
The technical solution used in the present invention is:
A kind of cultivation method of rich selenium zinc-iron corn, in the soil of maize planting, apply rich selenium zinc-iron chelating fertilizer heading stage at corn, described rich selenium zinc-iron chelating fertilizer contains chelating selenium salt, chelate zinc salt and chelating molysite, the chelating agent of described chelating selenium salt is amino acid, and the chelating agent of described chelate zinc salt and chelating molysite is ethylenediamine tetra-acetic acid; The amount of application of described rich selenium zinc-iron chelating fertilizer is in the selenium in chelating fertilizer, zinc, ferro element, and the amount of application of selenium element is 0.8～1.5 gram/acre, and the amount of application of zinc element is 80～150 grams/acre, and the amount of application of ferro element is 150～200 grams/acre.
In general crop, crucifer is the strongest to the accumulation ability of selenium, next is leguminous plant, cereal is minimum, the strongest to gathering of selenium with wheat in cereal, its selenium content is rape seed > soybean > wheat > broad bean, and the selenium content of broad bean, pea, corn and sweet potato is all lower than 0.05 mg/kg.With respect to other crops, the absorption of corn to selenium and accumulation ability a little less than.
In the present invention, the cultivation method of corn generally comprises seed selection, sowing, field management, harvesting and processing, and wherein field management comprises the rational application of fertilizer, science Guan Shui.Corn rational application of fertilizer principle is to use sufficient base manure (fertilizer), heavy dressing heading fertilizer.Improvements of the present invention are the fertilizing management at heading stage, all can carry out with reference to routine techniques as for remaining production operation.Adopt above-mentioned amount of application, the selenium of the corn of production, zinc content can meet relevant criterion eight kinds of elements such as (in NY 861-2004 grain (containing cereal, beans, potato class) and goods limit the quantity) lead, chromium, cadmium, mercury, selenium, arsenic, copper, zinc.
As preferably, the amount of application of described selenium element is 0.8～1.2 gram/acre, and the amount of application of zinc element is 90～110 grams/acre, and the amount of application of ferro element is 150～180 grams/acre.
After corn jointing, the root, stem and leaf of corn grows into vigorous period, and heading stage to the pustulation period is corn growth rate the fastest, period to absorption of nutrient ingredients amount maximum, amount of growth maximum in life, and dry-matter accumulation also enters the stage of increasing rapidly.The present invention applies rich selenium zinc-iron chelating fertilizer at corn heading stage in the soil of maize planting, the main position root system that now corn absorbs nutrient component developed in a large number in this period, grow the most vigorous, can more effectively absorb selenium, zinc, ferro element in being manured into soil, and the whole season of growth that is conducive to corn absorbs selenium, zinc, ferro element more fully, improve the availability of corn to selenium, zinc, ferro element, reduce the loss of selenium, zinc, ferro element.
Conventional chelating agent has ethylenediamine tetra-acetic acid, amino acid, protein, malic acid, humic acid etc.The chelating agent of chelating selenium salt of the present invention is amino acid, and as methionine, cysteine etc., corresponding chelating selenium salt is selenomethionine, selenocysteine etc.Using amino acid chelate fertilizer can make plant take in trace element and amino acid simultaneously, can effectively suppress mutual antagonism (copper and the molybdenum of mineral matter element, zinc and iron etc.), can avoid simultaneously with soil in some composition if oxalic acid, phosphate anion etc. are in conjunction with generating the difficult insoluble salt absorbing, there is good chemical stability, be easily absorbed and used by plants.
The chelating agent of chelate zinc salt of the present invention and chelating molysite is ethylenediamine tetra-acetic acid, comprises disodium edta, ethylene diamine tetraacetic acid sylvite etc., plays the ethylenediamine tetra-acetic acid that is all of chelation; Corresponding chelate zinc salt comprises ethylenediamine tetraacetic acid disodium zinc salt, EDTAP dipotassium ethylene diamine tetraacetate zinc etc., and corresponding chelating molysite comprises Ferric Sodium Edetate, EDTA-Fe potassium etc.The chelating fertilizer of making taking ethylenediamine tetra-acetic acid as chelating agent, has the advantages such as good, the easy absorption of solubility property, price be relatively low, and the slaine of these chelating states do not affect its solubility property after mutually mixing, and is conducive to use as multielement compound micro fertilizer.And ethylenediamine tetra-acetic acid has the carboxyl of the reaction of participating in, can generate sylvite, ammonia salt etc., in microelement-supplementing, supplement potash fertilizer and nitrogenous fertilizer.
Because chelating agent has seizure, the releasability to metal ion, can allow crop more easily absorb nutriment, and absorption is more reasonable; Utilization rate of fertilizer raising and fertilizer efficiency are lasting.In the present invention, the control group compared to single administration containing the fertilizer of one or both elements (selenium, zinc, iron), selenium, zinc, the iron content of using the corn of producing containing the experimental group of the fertilizer of selenium, zinc, three kinds of elements of iron all have significantly and improve.
For guarantee corn is in the nutrient balance of heading stage to pustulation period, promote corn with high yield, conventionally when apply rich selenium zinc-iron chelating fertilizer heading stage, also apply corn composite fertilizer; Also make in addition rich selenium zinc-iron chelating fertilizer fully mix, use more even.Described corn composite fertilizer is made up of carbonic hydroammonium, superphosphate and potassium chloride, and the amount of application of described carbonic hydroammonium is 15～20,000 grams/acre, and the amount of application of superphosphate is 15～20,000 grams/acre, and the amount of application of potassium chloride is 5～15,000 grams/acre.In the present invention, compared to the control group of single administration corn composite fertilizer, the Se content of using the corn of the experimental group production of rich selenium zinc-iron fertilizer (comprising corn composite fertilizer and rich selenium zinc-iron chelating fertilizer) has increased by 6～7 times, zinc content has increased by 1～2 times, and iron content has increased by 1.5～2.5 times.
For guarantee corn is in the ramp at heading stage, water at the corn heading initial stage, in 1st～3 days of starting to water, in the soil of maize planting, apply fertilizer.This soil conservation in period moisture state, imposes on fertilizer in soil, and fertilizer can fully be dissolved in soil, is conducive to the absorption of maize root system.Be generally and make maize root system have sufficient time to absorb fertilizer, be better than same day of watering (start water first day) most, in the soil of maize planting, apply rich selenium zinc-iron fertilizer.
Heading stage, while fertilising, the bar ditch that corn cutting depth is 10～15cm in every line, mixed fertilizer to be placed in ditch, then covers wet soil, avoided volatilization, the inefficacy of effective fertilizer composition.
Rich selenium zinc-iron chelating fertilizer contains chelating selenium salt, chelate zinc salt and chelating molysite, be respectively corn selenium, zinc, ferro element are provided, chelating selenium salt of the present invention can be selenomethionine, described chelate zinc salt can be ethylenediamine tetraacetic acid disodium zinc salt, and described chelating molysite can be Ferric Sodium Edetate.
Because the amount of application of selenium element is less, for making the mixing of chelating selenium salt more even, as preferably, with percentage by weight, the consisting of of described rich selenium zinc-iron chelating fertilizer: selenomethionine mixture 5%～8%, ethylenediamine tetraacetic acid disodium zinc salt 30%～40% and Ferric Sodium Edetate 55%～65%; Wherein, consisting of of selenomethionine mixture: selenomethionine 0.5～2%, calcium carbonate 25～35%, corn flour 25～35% and rice bran 30～45%.After selenomethionine mixture mixes with corn composite fertilizer and chelated zinc molysite, the overall distribution of selenium element in fertilizer is more even.
Beneficial effect of the present invention:
The present invention, by applying corn composite fertilizer and rich selenium zinc-iron chelating fertilizer heading stage in the soil of maize planting at corn, has improved the availability of corn to selenium, zinc, ferro element.In the present invention, compared to single administration, containing the control group of the fertilizer of one or both elements (selenium, zinc, iron), the control group of single administration corn composite fertilizer, selenium, zinc, the iron content of using the corn of producing containing the experimental group of the fertilizer of selenium, zinc, three kinds of elements of iron all have significantly and improve.Thereby selenium, the zinc content of using the lower corn going out containing the fertilizer production of selenium, zinc, iron amount can reach relevant criterion; And easy and simple to handle, greatly reduce labour cost, simultaneously in production process, a large amount of residual pollution that field runoff and soil are caused of having avoided fertilizer, economic security.
Embodiment
In the present invention, the cultivation method of corn generally comprises seed selection, sowing, field management, harvesting and processing, and wherein field management comprises the rational application of fertilizer, science Guan Shui.Improvements of the present invention are the fertilizing management at heading stage, all can carry out with reference to routine techniques as for remaining production operation.
Embodiment 1
Enforcement place, field: Bozhou City Wei Gang town, Anhui Province, the soil organic matter 7.2%, hydrolyzable nitrogen 58 mg/kg, rapid available phosphorus 21 mg/kg, available potassium 155 mg/kg.
For trying corn: corn variety is beautiful No. 9 of Anhui.
Corn sowing on June 10 in the present embodiment, conventional fertilizer application and management, started heading on July 17, July 18 watered, and in the same day in every line corn excavate the bar ditch of dark 10～15 centimetres, after corn composite fertilizer and rich selenium zinc-iron chelating fertilizer are mixed, apply in ditch, then cover wet soil.Control group only applies corn composite fertilizer.
Corn composite fertilizer is made up of carbonic hydroammonium, superphosphate and potassium chloride.The amount of application of carbonic hydroammonium is 15,000 grams/acre, and the amount of application of superphosphate is 15,000 grams/acre, and the amount of application of potassium chloride is 10,000 grams/acre.
Rich selenium zinc-iron chelating fertilizer is by selenomethionine mixture, ethylenediamine tetraacetic acid disodium zinc salt (zinc content is 14.35%, weight percent meter) and Ferric Sodium Edetate (iron content is 13.15%, weight percent meter) mixed preparing.With percentage by weight, the consisting of of selenomethionine mixture: selenomethionine 1%, calcium carbonate 29%, corn flour 30%, rice bran 40%.The concrete amount of application of rich selenium zinc-iron chelating fertilizer is in Table 1-1.
The amount of application of table 1-1 embodiment 1 rich selenium zinc-iron chelating fertilizer
Use after the corn ripe and harvested, processing of the rich selenium zinc-iron of the present embodiment fertilizer, entrust Agricultural University Of Anhui's biotechnology center to measure Se content, zinc content, the iron content of corn, assay method is according to GB 5009.93-2010 " mensuration of selenium in food " and GB/T14609-2008 " the mensuration flame atomic absorption spectrometry of copper, iron, manganese, zinc, calcium, magnesium in grain and oil detection Grain and its product ".Concrete outcome is in Table 1-2.
Selenium, zinc, the iron content of table 1-2 embodiment 1 corn
| Process | Se content (mg/kg) | Zinc content (mg/kg) | Iron content (mg/kg) |
| Control group | 0.028 | 18.37 | 22.35 |
| Experimental group | 0.21 | 43.05 | 65.23 |
In the present embodiment, compared to the control group of single administration corn composite fertilizer, the Se content of using the corn of the experimental group production of rich selenium zinc-iron fertilizer has increased by 6.5 times, and zinc content has increased by 1.34 times, and iron content has increased by 1.92 times.
Embodiment 2
Enforcement place, field: great Miao town, Woyang County, Anhui Province, the soil organic matter 6.7%, hydrolyzable nitrogen 55 mg/kg, rapid available phosphorus 20 mg/kg, available potassium 145 mg/kg.
For trying corn: corn variety is Henan jade 34.
Corn sowing on June 12 in the present embodiment, conventional fertilizer application and management, started heading on July 16, July 17 watered, and in the same day in every line corn excavate the bar ditch of dark 10～15 centimetres, experimental group all applies the fertilizer identical with embodiment 1 component with control group, the concrete amount of application of rich selenium zinc-iron chelating fertilizer is in Table 2-1, other fertilizer components are identical with embodiment 1 with amount of application and production process, and in the corn of production, selenium, zinc, iron content are in Table 2-2.
The amount of application of table 2-1 embodiment 2 rich selenium zinc-iron chelating fertilizers
Selenium, zinc, the iron content of table 2-2 embodiment 2 corns
| Process | Se content (mg/kg) | Zinc content (mg/kg) | Iron content (mg/kg) |
| Control group | 0.035 | 19.05 | 22.13 |
| Experimental group | 0.26 | 46.53 | 69.25 |
In the present embodiment, compared to the control group of single administration corn composite fertilizer, the Se content of using the corn of the experimental group production of rich selenium zinc-iron fertilizer has increased by 6.43 times, and zinc content has increased by 1.44 times, and iron content has increased by 2.13 times.
Embodiment 3
Enforcement place, field: great Miao town, Woyang County, Anhui Province, the soil organic matter 6.8%, hydrolyzable nitrogen 57 mg/kg, rapid available phosphorus 22 mg/kg, available potassium 148 mg/kg.
For trying corn: corn variety is Henan jade 34.
Corn sowing on June 12 in the present embodiment, conventional fertilizer application and management, started heading on July 17, July 18 watered, and in the same day in every line corn excavate the bar ditch of dark 10～15 centimetres, after corn composite fertilizer and rich selenium zinc-iron chelating fertilizer are mixed, apply in ditch, then cover wet soil.Control group applies corn composite fertilizer and rich selenium chelating fertilizer.The concrete amount of application of rich selenium zinc-iron chelating fertilizer and rich selenium chelating fertilizer is in Table 3-1, and other fertilizer components are identical with embodiment 1 with amount of application and production process, and in the corn of production, selenium, zinc, iron content are in Table 3-2.
The amount of application of table 3-1 embodiment 3 rich selenium chelating fertilizers and rich selenium zinc-iron chelating fertilizer
Selenium, zinc, the iron content of table 3-2 embodiment 3 corns
| Process | Se content (mg/kg) | Zinc content (mg/kg) | Iron content (mg/kg) |
| Control group | 0.18 | 18.72 | 21.25 |
| Experimental group | 0.25 | 46.02 | 68.46 |
In the present embodiment, compared to the control group of single administration selenium-enriched fertilizer, the Se content of using the corn of the experimental group production of rich selenium zinc-iron fertilizer has increased by 38.89%.
Embodiment 4
Enforcement place, field: great Miao town, Woyang County, Anhui Province, the soil organic matter 6.8%, hydrolyzable nitrogen 57 mg/kg, rapid available phosphorus 22 mg/kg, available potassium 148 mg/kg.
For trying corn: corn variety is Henan jade 34.
Corn sowing on June 12 in the present embodiment, conventional fertilizer application and management, started heading on July 17, July 18 watered, and in the same day in every line corn excavate the bar ditch of dark 10～15 centimetres, after corn composite fertilizer and rich selenium zinc-iron chelating fertilizer are mixed, apply in ditch, then cover wet soil.Control group applies corn composite fertilizer and rich zinc chelating fertilizer.The concrete amount of application of rich selenium zinc-iron chelating fertilizer and rich zinc chelating fertilizer is in Table 4-1, and other fertilizer components are identical with embodiment 1 with amount of application and production process, and in the corn of production, selenium, zinc, iron content are in Table 4-2.
The amount of application of table 4-1 embodiment 4 rich zinc chelating fertilizers and rich selenium zinc-iron chelating fertilizer
Selenium, zinc, the iron content of table 4-2 embodiment 4 corns
| Process | Se content (mg/kg) | Zinc content (mg/kg) | Iron content (mg/kg) |
| Control group | 0.032 | 41.33 | 21.89 |
| Experimental group | 0.25 | 45.89 | 68.33 |
In the present embodiment, compared to the control group of the rich zinc fertilizer material of single administration, the zinc content of using the corn of the experimental group production of rich selenium zinc-iron fertilizer has increased by 11.03%.
Embodiment 5
Enforcement place, field: great Miao town, Woyang County, Anhui Province, the soil organic matter 6.8%, hydrolyzable nitrogen 57 mg/kg, rapid available phosphorus 22 mg/kg, available potassium 148 mg/kg.
For trying corn: corn variety is Henan jade 34.
Corn sowing on June 12 in the present embodiment, conventional fertilizer application and management, started heading on July 17, July 18 watered, and in the same day in every line corn excavate the bar ditch of dark 10～15 centimetres, after corn composite fertilizer and rich selenium zinc-iron chelating fertilizer are mixed, apply in ditch, then cover wet soil.Control group applies corn composite fertilizer and Fu Tie chelating fertilizer.The concrete amount of application of rich selenium zinc-iron chelating fertilizer and Fu Tie chelating fertilizer is in Table 5-1, and other fertilizer components are identical with embodiment 1 with amount of application and production process, and in the corn of production, selenium, zinc, iron content are in Table 5-2.
The amount of application of table 5-1 embodiment 5 rich iron chelating fertilizers and rich selenium zinc-iron chelating fertilizer
Selenium, zinc, the iron content of table 5-2 embodiment 5 corns
| Process | Se content (mg/kg) | Zinc content (mg/kg) | Iron content (mg/kg) |
| Control group | 0.031 | 18.55 | 60.45 |
| Experimental group | 0.26 | 47.03 | 68.27 |
In the present embodiment, compared to the control group of the rich iron fertilizer material of single administration, the iron content of using the corn of the experimental group production of rich selenium zinc-iron fertilizer has increased by 12.94%.
Embodiment 6
Enforcement place, field: Bozhou City Wei Gang town, Anhui Province, the soil organic matter 7.2%, hydrolyzable nitrogen 58 mg/kg, rapid available phosphorus 21 mg/kg, available potassium 155 mg/kg.
For trying corn: corn variety is beautiful No. 9 of Anhui.
Corn sowing on June 10 in the present embodiment, conventional fertilizer application and management, started heading on July 18, July 19 watered, and in the same day in every line corn excavate the bar ditch of dark 10～15 centimetres, after corn composite fertilizer and rich selenium zinc-iron chelating fertilizer are mixed, apply in ditch, then cover wet soil.Control group applies corn composite fertilizer and rich selenium zinc chelating fertilizer.The concrete amount of application of rich selenium zinc-iron chelating fertilizer and rich selenium zinc chelating fertilizer is in Table 6-1, and other fertilizer components are identical with embodiment 1 with amount of application and production process, and in the corn of production, selenium, zinc, iron content are in Table 6-2.
The amount of application of table 6-1 embodiment 6 rich selenium zinc chelating fertilizers and rich selenium zinc-iron chelating fertilizer
Selenium, zinc, the iron content of table 6-2 embodiment 6 corns
| Process | Se content (mg/kg) | Zinc content (mg/kg) | Iron content (mg/kg) |
| Control group | 0.19 | 38.25 | 23.50 |
| Experimental group | 0.22 | 42.87 | 63.22 |
In the present embodiment, compared to the control group of using rich selenium zinc fertilizer material, selenium, the zinc content of using the corn of the experimental group production of rich selenium zinc-iron fertilizer have increased respectively 15.79%, 12.08%.
Embodiment 7
Enforcement place, field: Bozhou City Wei Gang town, Anhui Province, the soil organic matter 7.2%, hydrolyzable nitrogen 58 mg/kg, rapid available phosphorus 21 mg/kg, available potassium 155 mg/kg.
For trying corn: corn variety is beautiful No. 9 of Anhui.
Corn sowing on June 10 in the present embodiment, conventional fertilizer application and management, started heading on July 18, July 19 watered, and in the same day in every line corn excavate the bar ditch of dark 10～15 centimetres, after corn composite fertilizer and rich selenium zinc-iron chelating fertilizer are mixed, apply in ditch, then cover wet soil.Control group applies corn composite fertilizer and rich ferroselenium chelating fertilizer.The concrete amount of application of rich selenium zinc-iron chelating fertilizer and rich ferroselenium chelating fertilizer is in Table 7-1, and other fertilizer components are identical with embodiment 1 with amount of application and production process, and in the corn of production, selenium, zinc, iron content are in Table 7-2.
The amount of application of table 7-1 embodiment 7 rich ferroselenium chelating fertilizers and rich selenium zinc-iron chelating fertilizer
Selenium, zinc, the iron content of table 7-2 embodiment 7 corns
| Process | Se content (mg/kg) | Zinc content (mg/kg) | Iron content (mg/kg) |
| Control group | 0.20 | 17.22 | 58.05 |
| Experimental group | 0.25 | 43.15 | 63.59 |
In the present embodiment, compared to the control group of using rich ferroselenium fertilizer, selenium, the iron content of using the corn of the experimental group production of rich selenium zinc-iron fertilizer have increased respectively 25%, 9.54%.
Embodiment 8
Enforcement place, field: Bozhou City Wei Gang town, Anhui Province, the soil organic matter 7.2%, hydrolyzable nitrogen 58 mg/kg, rapid available phosphorus 21 mg/kg, available potassium 155 mg/kg.
For trying corn: corn variety is beautiful No. 9 of Anhui.
Corn sowing on June 10 in the present embodiment, conventional fertilizer application and management, started heading on July 18, July 19 watered, and in the same day in every line corn excavate the bar ditch of dark 10～15 centimetres, after corn composite fertilizer and rich selenium zinc-iron chelating fertilizer are mixed, apply in ditch, then cover wet soil.Control group applies corn composite fertilizer and rich zinc-iron chelating fertilizer.The concrete amount of application of rich selenium zinc-iron chelating fertilizer and rich zinc-iron chelating fertilizer is in Table 8-1, and other fertilizer components are identical with embodiment 1 with amount of application and production process, and in the corn of production, selenium, zinc, iron content are in Table 8-2.
The amount of application of table 8-1 embodiment 8 rich zinc-iron chelating fertilizers and rich selenium zinc-iron chelating fertilizer
Selenium, zinc, the iron content of table 8-2 embodiment 8 corns
| Process | Se content (mg/kg) | Zinc content (mg/kg) | Iron content (mg/kg) |
| Control group | 0.018 | 39.22 | 59.35 |
| Experimental group | 0.23 | 43.28 | 65.02 |
In the present embodiment, compared to the control group of using rich zinc-iron fertilizer, zinc, the iron content of using the corn of the experimental group production of rich selenium zinc-iron fertilizer have increased respectively 10.35%, 9.55%.
In embodiment 1～8, selenium, the zinc content of using the corn of the fertilizer production of rich selenium zinc-iron is all no more than the regulation of NY 861-2004 eight kinds of elements such as " in grain (containing cereal, beans, potato class) and goods limit the quantity " lead, chromium, cadmium, mercury, selenium, arsenic, copper, zinc standard, wherein selenium constituent content is no more than 0.3 mg/kg, and zinc constituent content is no more than 50 mg/kg.
Claims (7)
1. the cultivation method of a rich selenium zinc-iron corn, it is characterized in that, in the soil of maize planting, apply rich selenium zinc-iron chelating fertilizer heading stage at corn, described rich selenium zinc-iron chelating fertilizer contains chelating selenium salt, chelate zinc salt and chelating molysite, the chelating agent of described chelating selenium salt is amino acid, and the chelating agent of described chelate zinc salt and chelating molysite is ethylenediamine tetra-acetic acid; The amount of application of described rich selenium zinc-iron chelating fertilizer is in the selenium in chelating fertilizer, zinc, ferro element, and the amount of application of selenium element is 0.8～1.5 gram/acre, and the amount of application of zinc element is 80～150 grams/acre, and the amount of application of ferro element is 150～200 grams/acre.
2. cultivation method as claimed in claim 1, is characterized in that, the amount of application of described selenium element is 0.8～1.2 gram/acre, and the amount of application of zinc element is 90～110 grams/acre, and the amount of application of ferro element is 150～180 grams/acre.
3. cultivation method as claimed in claim 1, it is characterized in that, when applying rich selenium zinc-iron chelating fertilizer, also apply corn composite fertilizer, described corn composite fertilizer is made up of carbonic hydroammonium, superphosphate and potassium chloride, the amount of application of described carbonic hydroammonium is 15～20,000 grams/acre, the amount of application of superphosphate is 15～20,000 grams/acre, and the amount of application of potassium chloride is 5～15,000 grams/acre.
4. the cultivation method as described in claim 1 or 3, is characterized in that, waters at the corn heading initial stage, in 1st～3 days of starting to water, in the soil of maize planting, applies fertilizer.
5. the cultivation method as described in claim 1 or 3, is characterized in that, heading stage, while fertilising, the bar ditch that corn cutting depth is 10～15cm in every line, mixed fertilizer to be placed in ditch, then covers wet soil.
6. the cultivation method as described in claim 1 or 3, is characterized in that, described chelating selenium salt is selenomethionine, and described chelate zinc salt is ethylenediamine tetraacetic acid disodium zinc salt, and described chelating molysite is Ferric Sodium Edetate.
7. cultivation method as claimed in claim 6, it is characterized in that, with percentage by weight, the consisting of of described rich selenium zinc-iron chelating fertilizer: selenomethionine mixture 5%～8%, ethylenediamine tetraacetic acid disodium zinc salt 30%～40% and Ferric Sodium Edetate 55%～65%; Wherein, consisting of of selenomethionine mixture: selenomethionine 0.5～2%, calcium carbonate 25～35%, corn flour 25～35% and rice bran 30～45%.
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Cited By (5)
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| CN106146162A (en) * | 2016-07-05 | 2016-11-23 | 山东省农业科学院玉米研究所 | A kind of regulation fertilizer improveing micronutrient levels and Zn and Fe biological effectiveness in Huang-Huai-Hai corn kernel and application process |
| CN106561399A (en) * | 2016-11-14 | 2017-04-19 | 昭通金滩农业科技有限公司 | Ecological planting method of selenium-enriched apples |
| CN106905016A (en) * | 2017-04-07 | 2017-06-30 | 安徽中煦环保新材料科技有限公司 | A kind of environmentally friendly selenium-rich soil fertility repair materials and preparation method thereof |
| CN108812696A (en) * | 2018-05-16 | 2018-11-16 | 湖南农业大学 | A kind of corn drop cadmium agent |
| CN112956379A (en) * | 2021-01-26 | 2021-06-15 | 湖北省农业科学院农业经济技术研究所(湖北省农业科学院农业规划设计研究所) | Method for planting selenium-rich sweet corn by applying biological nano selenium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106146162A (en) * | 2016-07-05 | 2016-11-23 | 山东省农业科学院玉米研究所 | A kind of regulation fertilizer improveing micronutrient levels and Zn and Fe biological effectiveness in Huang-Huai-Hai corn kernel and application process |
| CN106146162B (en) * | 2016-07-05 | 2019-04-09 | 山东省农业科学院玉米研究所 | It is a kind of improvement Huang-Huai-Hai corn kernel in micronutrient levels and Zn and Fe biological effectiveness adjusting fertilizer and method of administration |
| CN106561399A (en) * | 2016-11-14 | 2017-04-19 | 昭通金滩农业科技有限公司 | Ecological planting method of selenium-enriched apples |
| CN106905016A (en) * | 2017-04-07 | 2017-06-30 | 安徽中煦环保新材料科技有限公司 | A kind of environmentally friendly selenium-rich soil fertility repair materials and preparation method thereof |
| CN108812696A (en) * | 2018-05-16 | 2018-11-16 | 湖南农业大学 | A kind of corn drop cadmium agent |
| CN112956379A (en) * | 2021-01-26 | 2021-06-15 | 湖北省农业科学院农业经济技术研究所(湖北省农业科学院农业规划设计研究所) | Method for planting selenium-rich sweet corn by applying biological nano selenium |
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