CN111377765A - Selenium-rich high-zinc leaf fertilizer for wheat and preparation method and application thereof - Google Patents

Selenium-rich high-zinc leaf fertilizer for wheat and preparation method and application thereof Download PDF

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CN111377765A
CN111377765A CN202010174558.7A CN202010174558A CN111377765A CN 111377765 A CN111377765 A CN 111377765A CN 202010174558 A CN202010174558 A CN 202010174558A CN 111377765 A CN111377765 A CN 111377765A
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selenium
wheat
zinc
rich
aminopolysaccharide
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杜小凤
吴传万
彭杰
章安康
仲秀娟
顾大路
王玮
贾艳艳
王伟中
文廷刚
杨文飞
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JIANGSU XUHUAI DISTRICT HUAIYIN AGRICULTURAL SCIENCE RESEARCH INSTITUTE
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JIANGSU XUHUAI DISTRICT HUAIYIN AGRICULTURAL SCIENCE RESEARCH INSTITUTE
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    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05CNITROGENOUS FERTILISERS
    • C05C11/00Other nitrogenous fertilisers

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Abstract

The invention relates to a selenium-rich and high-zinc foliar fertilizer for wheat and a preparation method and application thereof, wherein the foliar fertilizer is prepared from 3-9 g of amino polysaccharide, 4-8 g of sodium selenite, 10-20 g of zinc gluconate, 0.5-2 g of melatonin, 2-5 g of choline chloride and 5-10 g of citric acid per liter of foliar fertilizer; the aminopolysaccharide is one or a mixture of different molecular weights in the molecular weight range of 200KDa to 500 KDa. The foliar fertilizer is applied by foliar spraying in the full heading period or the filling period of wheat, and can obviously increase the yield of wheat and improve the selenium and zinc contents of grains. The foliar fertilizer has the advantages of simple preparation, convenient use, time and labor saving, low cost and obvious effect, and has double effects of yield increase and selenium-rich and high-zinc nutrition fortification.

Description

Selenium-rich high-zinc leaf fertilizer for wheat and preparation method and application thereof
Technical Field
The invention belongs to the field of crop nutrition-enriched leaf fertilizer, and particularly relates to a selenium-rich high-zinc leaf fertilizer for wheat and a preparation method and application thereof.
Background
Zinc is not only a trace element necessary for plant growth and development, but also one of trace elements necessary for human body. Zinc is involved in the synthesis of more than 3000 proteins as a catalyst or structural component. The plant photosynthesis, pollination, growth regulation, disease defense mechanism and other physiological processes are all participated in zinc, so that the zinc deficiency can affect the growth of crops and even reduce the yield. In humans, zinc deficiency results in growth retardation, anorexia and vision loss in children and a series of chronic diseases in adults. The current zinc deficiency problem is ubiquitous and of great concern worldwide, particularly in cereal-based regions.
Selenium is a trace element existing in heavy metal sulfide ore in nature and is one of essential nutrient elements for organisms. The organism cannot be made by oneself and can only be obtained from the environment. Inorganic selenium cannot be directly absorbed and utilized by human body, and plants can convert inorganic selenium in natural environment into organic selenium through conversion. Therefore, the regulation of selenium in soil or foliage spraying can promote the proper absorption of selenium by plants, and is very important for maintaining the normal demand of selenium for human and animals. Selenium is applied to crops, can regulate photosynthesis, increase yield and enhance the resistance of the crops to adversity stress such as heavy metal and drought. The long-term selenium deficiency of human bodies can cause a series of health problems, such as myocardial lesion and liver lesion, and a serious endemic disease, namely keshan disease, which has appeared in China is caused by selenium deficiency. According to statistics, more than 40 countries and regions in the world are lack of selenium, 2/3 China's native land is an internationally recognized selenium deficiency region and relates to 22 provinces (cities and regions), wherein Su, Zhe, Wan and other regions are serious selenium deficiency regions, and the selenium intake of about 7 hundred million people in the country is seriously insufficient for a long time. The average selenium intake of China is only 36mg/d, which is obviously lower than the minimum recommended values of 50mg and 60mg per day of the Chinese society for nutrition and the world health organization, and nutrition experts call for 'to grab the selenium supplement work of the whole people like grabbing iodine supplement'. Plant selenium is a main way for supplementing selenium for human bodies, but 72% of land in China is in a low-selenium or selenium-deficient state, and the requirement of the human bodies for selenium is difficult to meet in a natural state. The selenium content of crops can be effectively improved by applying exogenous selenium, and the method is one of the main ways of meeting the selenium requirement of human bodies at present. Wheat is one of the main grain crops in China, has stronger selenium enrichment capacity compared with corn, and has the potential value of supplementing selenium for the whole people.
The problem of low zinc content of wheat grains is determined by genetic factors on one hand; on the other hand, it is caused by soil factors. More than 50% of the soil in the world has lower effective zinc content, and is highly matched with a wheat planting area, so that the zinc content of wheat grains planted in the soil with lower zinc content is generally lower. Similar to the world wheat planting situation, the soil zinc content of the main wheat planting area in China is mostly in a shortage or potential shortage level, the zinc content of the produced wheat grains is mostly less than 30mg/kg, and the daily zinc intake range of 40 mg/kg-60 mg/kg which meets the zinc nutrition and health requirements of people taking wheat as staple food cannot be achieved. In addition, the wheat grains are rich in phytic acid, and phytic acid as a chelating agent can be chelated with zinc ions to form an insoluble phytic acid-zinc compound, so that the bioavailability of zinc in the wheat grains is further reduced, and the absorption of zinc by a human body is limited. Therefore, the practical and effective zinc strengthening measures of the seeds have important significance for meeting the zinc nutrition requirement of the human body and promoting the health of the human body.
Disclosure of Invention
The invention aims to provide a selenium-rich and high-zinc foliar fertilizer for wheat, and a preparation method and application thereof.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention provides a selenium-rich high-zinc foliar fertilizer for wheat, wherein each liter of foliar fertilizer contains the following raw materials by weight: 3-9 g of aminopolysaccharide, 4-8 g of sodium selenite, 10-20 g of zinc gluconate, 0.5-2 g of melatonin, 2-5 g of choline chloride and 5-10 g of citric acid; the aminopolysaccharide is one or a mixture of different molecular weights in the molecular weight range of 200KDa to 500 KDa.
Preferably, the aminopolysaccharide is a mixture of aminopolysaccharides with molecular weight of 200 KDa-500 KDa; the mass ratio of the aminopolysaccharide with the molecular weight of 300KDa to the aminopolysaccharide with the molecular weight of 400KDa is 1-2: 1; the mass ratio of the aminopolysaccharide with the molecular weight of 200KDa to the aminopolysaccharide with the molecular weight of 500KDa is 1-2: 1.
The invention also provides a preparation method of the selenium-rich and high-zinc foliar fertilizer for wheat, which comprises the following steps:
(1) mixing the aminopolysaccharide, sodium selenite, citric acid and water to obtain an aminopolysaccharide selenium complex solution;
(2) and mixing the amino polysaccharide selenium complex solution with zinc gluconate, melatonin and choline chloride to obtain the selenium-rich and high-zinc leaf fertilizer for wheat.
The invention also provides application of the selenium-rich and high-zinc foliar fertilizer for wheat in wheat planting.
Preferably, the application time of the selenium-rich and high-zinc foliar fertilizer for wheat is the full-spike period or the filling period of wheat; the frequency of use was 1 application throughout the growth cycle of wheat.
Preferably, the application mode of the selenium-rich and high-zinc foliar fertilizer for wheat is to apply the selenium-rich and high-zinc foliar fertilizer after dilution; the dilution mode is water dilution; the weight ratio of the selenium-rich high-zinc foliar fertilizer to the water of the wheat is 1: (10-30).
Preferably, the usage amount of the diluted selenium-rich high-zinc foliar fertilizer for wheat is 5L-15L: 667m2
Preferably, the application mode of the selenium-rich and high-zinc foliar fertilizer for wheat is to use any one of an artificial sprayer, a mechanical sprayer or an unmanned aerial vehicle to spray the foliar surface of wheat.
The invention provides a formula of a selenium-rich and high-zinc foliar fertilizer for wheat, which selects various regulating substances and nutritional ingredients such as amino polysaccharide, sodium selenite, zinc gluconate, melatonin, choline chloride and the like according to a compatibility synergistic principle, and has double effects of increasing the yield of wheat and enriching the selenium and zinc nutrition after being used. The results of the examples show that the selenium-rich high-zinc foliar fertilizer for wheat, provided by the invention, can be used for remarkably increasing the yield of wheat and improving the contents of selenium and zinc in wheat grains.
Detailed Description
The invention provides a selenium-rich high-zinc foliar fertilizer for wheat. In the invention, the selenium-rich and high-zinc foliar fertilizer for wheat takes water as a solvent; each liter of the foliar fertilizer contains the following raw materials by weight: 3-9 g of aminopolysaccharide, 4-8 g of sodium selenite, 10-20 g of zinc gluconate, 0.5-2 g of melatonin, 2-5 g of choline chloride and 5-10 g of citric acid. According to the principle of compatibility and synergism, various regulating substances and nutrient components such as amino polysaccharide, sodium selenite, zinc gluconate, melatonin, choline chloride and the like are selected, and the compound fertilizer has double effects of increasing the yield and enriching the selenium and zinc.
In the invention, the aminopolysaccharide is a mixture of one or more different molecular weights in the molecular weight range of 200KDa to 500 KDa; when the aminopolysaccharide has one molecular weight, the molecular weight of the aminopolysaccharide is preferably any one of 200KDa to 500 KDa; when the aminopolysaccharide is a mixture of various different molecular weights, the aminopolysaccharide with the molecular weight of 200KDa and the aminopolysaccharide with the molecular weight of 500KDa are preferably selected, and the mass ratio of the aminopolysaccharide with the molecular weight of 300KDa to the aminopolysaccharide with the molecular weight of 400KDa is preferably 1-2: 1; the mass ratio of the aminopolysaccharide with the molecular weight of 200KDa to the aminopolysaccharide with the molecular weight of 500KDa is 1-2: 1. The amino polysaccharide has obvious effects on disease resistance induction, stress resistance, fruit and vegetable fresh keeping, pesticide synergism, soil improvement, growth promotion, yield increase, quality improvement and the like. The invention adopts the aminopolysaccharide with the molecular weight of 200 KDa-500 KDa, particularly adopts the form of the aminopolysaccharide with the specific molecular weight, meets the growth requirement of wheat, has extremely coordinated adaptability with the wheat, has the best effects on wheat yield increase and selenium and zinc enrichment, and can effectively avoid the contradiction that the medicine effect is poor and the quality of preparation products cannot be unified due to the difference of the structure and the molecular weight of the aminopolysaccharide in the past.
In the invention, melatonin is an indoleamine compound widely existing in animals and plants, can enhance the biotic and abiotic stress tolerance of plants, promote root development and reduce the transpiration of leaves, particularly has the effects of promoting selenium and zinc enrichment and reducing heavy metal absorption of crops, and can obviously improve the selenium and zinc enrichment and pollution reduction of wheat. The choline chloride can improve the components of plant membrane lipid, promote the development of a thylakoid membrane to improve photosynthesis, has good effects on maintaining the grouting and photosynthesis of wheat, and improves the resistance of the wheat to adverse conditions such as high temperature, dry hot air and the like.
The source of the aminopolysaccharide, sodium selenite, zinc gluconate, melatonin, choline chloride and citric acid in the invention has no special requirement, and the commercially available products which are well known to the technical personnel in the field can be adopted.
The invention also provides a preparation method of the selenium-rich and high-zinc foliar fertilizer for wheat, which comprises the following steps:
(1) mixing the aminopolysaccharide, sodium selenite, citric acid and water to obtain an aminopolysaccharide selenium complex solution;
(2) and mixing the amino polysaccharide selenium complex solution with zinc gluconate, melatonin and choline chloride to obtain the selenium-rich and high-zinc leaf fertilizer for wheat. The preparation method of the foliar fertilizer provided by the invention is simple, and the raw materials are easy to obtain and the price is low. Meanwhile, water is used as a medium, so that the method has remarkable environmental and social benefits, is beneficial to the physical health of operators, improves the safety, and is easy for market popularization.
The invention mixes the aminopolysaccharide, sodium selenite and citric acid with water to obtain the aminopolysaccharide selenium complex solution. In the invention, the citric acid can catalyze the complexation reaction of the aminopolysaccharide and sodium selenite to obtain the aminopolysaccharide selenium complex solution, and the complex is prepared firstly to be beneficial to the subsequent dissolution of other substances.
After the amino polysaccharide selenium complex solution is obtained, the amino polysaccharide selenium complex solution is mixed with zinc gluconate, melatonin and choline chloride to obtain the selenium-rich and high-zinc leaf fertilizer for wheat. According to the invention, zinc gluconate, melatonin and choline chloride are preferably added into the amino polysaccharide selenium complex solution, and the mixture is stirred and dissolved uniformly to obtain a mixed solution. The addition of the components of the invention is not sequentially required. The invention preferably fixes the volume of the obtained mixed solution to 1L; and preferably, adding tap water into the mixed solution, stirring uniformly, and dissolving to 1L to obtain the selenium-rich and high-zinc foliar fertilizer for wheat.
The invention also provides application of the selenium-rich and high-zinc foliar fertilizer for wheat in wheat planting.
After the selenium-rich high-zinc foliar fertilizer for wheat is prepared, the selenium-rich high-zinc foliar fertilizer can be directly used after being diluted by water; the dilution multiple of the selenium-rich high-zinc foliar fertilizer for wheat is preferably 10-30 times; namely, the weight ratio of the selenium-rich high-zinc foliar fertilizer to the dilution water for wheat is 1: (10-30).
In the invention, the application amount of the diluted selenium-rich and high-zinc foliar fertilizer for the wheat in each mu of wheat field is preferably 5-15L; the application method preferably uses any one of a manual sprayer, a mechanical sprayer or an unmanned aerial vehicle.
When an artificial sprayer or a mechanical sprayer is used, the dilution concentration of the selenium-rich high-zinc foliar fertilizer for wheat and water is preferably 1: 30; when the unmanned aerial vehicle is used, the dilution concentration of the selenium-rich high-zinc wheat foliar fertilizer and water is preferably 1: 10; the spraying time is preferably the full heading period or the filling period of the wheat; spraying once in the whole growth and development process of wheat.
The application method of the foliar fertilizer provided by the invention is convenient and the operation is simple. Even non-professional people can prepare and use easily, and the problems of waste of planting cost or reduction of effect caused by insufficient use amount and the like are avoided.
In order to further illustrate the invention, the following examples are given to describe the selenium-rich and high-zinc foliar fertilizer for wheat and its preparation method and application in detail, but they should not be construed as limiting the scope of the invention.
Example 1
A selenium-rich and high-zinc nutrition-enriched foliar fertilizer for wheat and a preparation method thereof comprise the following steps:
(1) weighing 4g of aminopolysaccharide with the molecular weight of 200KDa and 4g of sodium selenite, adding into 800mL of water, and adding 5g of citric acid to obtain an aminopolysaccharide selenium complex solution;
(2) respectively weighing 10g of zinc gluconate, 0.5g of melatonin and 2g of choline chloride, sequentially dissolving and adding into the amino polysaccharide selenium complex solution obtained in the step (1), and uniformly stirring and dissolving;
(3) and (3) adding tap water into the mixed liquid obtained in the step (2), uniformly stirring, and dissolving to 1L to obtain the selenium-rich and high-zinc nutrition-enriched foliar fertilizer for wheat.
Example 2
A selenium-rich and high-zinc nutrition-enriched foliar fertilizer for wheat and a preparation method thereof comprise the following steps:
(1) weighing 6g of aminopolysaccharide with the molecular weight of 500KDa and 8g of sodium selenite, adding into 800mL of water, and adding 6g of citric acid to obtain an aminopolysaccharide selenium complex solution;
(2) respectively weighing 20g of zinc gluconate, 1g of melatonin and 3g of choline chloride, sequentially dissolving and adding into the amino polysaccharide selenium complex solution obtained in the step (1), and stirring and dissolving uniformly;
(3) and (3) adding tap water into the mixed liquid obtained in the step (2), uniformly stirring, and dissolving to 1L to obtain the selenium-rich and high-zinc nutrition-enriched foliar fertilizer for wheat.
Example 3
A selenium-rich and high-zinc nutrition-enriched foliar fertilizer for wheat and a preparation method thereof comprise the following steps:
(1) weighing 4g of aminopolysaccharide with the molecular weight of 200KDa, 2g of aminopolysaccharide with the molecular weight of 500KDa and 6g of sodium selenite, adding into 800mL of water, and adding 5g of citric acid to obtain an aminopolysaccharide selenium complex solution;
(2) respectively weighing 15g of zinc gluconate, 2g of melatonin and 5g of choline chloride, sequentially dissolving and adding into the amino polysaccharide selenium complex solution obtained in the step (1), and uniformly stirring and dissolving;
(3) and (3) adding tap water into the mixed liquid obtained in the step (2), uniformly stirring, and dissolving to 1L to obtain the selenium-rich and high-zinc nutrition-enriched foliar fertilizer for wheat.
Example 4
A selenium-rich and high-zinc nutrition-enriched foliar fertilizer for wheat and a preparation method thereof comprise the following steps:
(1) weighing 3g of aminopolysaccharide with the molecular weight of 300KDa, 3g of aminopolysaccharide with the molecular weight of 400KDa and 6g of sodium selenite, adding into 800mL of water, and adding 6g of citric acid to obtain an aminopolysaccharide selenium complex solution;
(2) respectively weighing 16g of zinc gluconate, 2.4g of melatonin and 6g of choline chloride, sequentially dissolving and adding into the amino polysaccharide selenium complex solution obtained in the step (1), and uniformly stirring and dissolving;
(3) and (3) adding tap water into the mixed liquid obtained in the step (2), uniformly stirring, and dissolving to 1L to obtain the selenium-rich and high-zinc nutrition-enriched foliar fertilizer for wheat.
Comparative example 1
A selenium-rich high-zinc wheat foliar fertilizer and a preparation method thereof, the component content and the preparation steps are as follows:
(1) weighing 5g of aminopolysaccharide with the molecular weight of 650KDa and 4g of sodium selenite, adding into 800mL of water, and adding 5g of citric acid to obtain an aminopolysaccharide selenium complex solution;
(2) respectively weighing 11g of zinc gluconate, 0.6g of melatonin and 2g of choline chloride, sequentially adding into the amino polysaccharide selenium complex solution obtained in the step (1), adding each component, stirring and dissolving uniformly, then adding the next component, and stirring and dissolving uniformly;
(3) and (3) adding tap water into the mixed liquid obtained in the step (2), uniformly stirring, and dissolving to 1L to obtain the selenium-rich and high-zinc wheat foliar fertilizer.
Comparative example 2
A selenium-rich high-zinc wheat foliar fertilizer and a preparation method thereof, the component content and the preparation steps are as follows:
(1) weighing 5g of sodium selenite, and adding the sodium selenite into 800mL of water;
(2) respectively weighing 12g of zinc gluconate, 1g of melatonin and 6g of choline chloride, sequentially adding into the sodium selenite solution obtained in the step (1), adding each component, stirring and dissolving uniformly, adding the next component, and stirring and dissolving uniformly;
(3) and (3) adding tap water into the mixed liquid obtained in the step (2), uniformly stirring, and dissolving to 1L to obtain the selenium-rich and high-zinc wheat foliar fertilizer.
Comparative example 3
A selenium-rich high-zinc wheat foliar fertilizer and a preparation method thereof, the component content and the preparation steps are as follows:
(2) weighing 5g of aminopolysaccharide with the molecular weight of 150KDa and 5g of sodium selenite, adding into 800mL of water, and adding 5g of citric acid to obtain an aminopolysaccharide selenium complex solution;
(2) weighing 11g of zinc gluconate, adding the zinc gluconate into the amino polysaccharide selenium complex solution obtained in the step (1), and stirring and dissolving the zinc gluconate and the amino polysaccharide selenium complex solution uniformly;
(3) and (3) adding tap water into the mixed liquid obtained in the step (2), uniformly stirring, and dissolving to 1L to obtain the selenium-rich and high-zinc wheat foliar fertilizer.
Comparative example 4
A selenium-rich and high-zinc nutrition-enriched foliar fertilizer for wheat and a preparation method thereof comprise the following steps:
(1) weighing 5g of aminopolysaccharide with the molecular weight of 350KDa and 6g of sodium selenite, adding into 800mL of water, and adding 5g of citric acid to obtain an aminopolysaccharide selenium complex solution;
(2) respectively weighing 12g of zinc gluconate and 1.5g of melatonin, sequentially dissolving and adding into the amino polysaccharide selenium complex solution obtained in the step (1), and uniformly stirring and dissolving;
(3) and (3) adding tap water into the mixed liquid obtained in the step (2), uniformly stirring, and dissolving to 1L to obtain the selenium-rich and high-zinc nutrition-enriched foliar fertilizer for wheat.
Application example 1
The method is characterized in that Huai wheat 33 (bred by Huai Yin agricultural science research institute in Xuhuai region of Jiangsu province) is taken as a test object, and is carried out in a modern agricultural (rice and wheat) science and technology comprehensive demonstration base in Jiangsu province in 2017-2018, wherein the base is located in Lingqiao town (118 degrees 51'E and 33 degrees 35' N) in Huai Yin region of Huai-An city of Jiangsu province, the river is north, the annual average temperature is 14 ℃, the annual precipitation is 950mm, the annual sunshine hours is 2360h, and the frost-free period is 240 d. The previous stubble of the test field is rice (the yield is 685kg/667 m)2) The soil belongs to the type of mucky soil, and a soil layer of 0 cm-20 cm contains 22.1g/kg of organic matter, 1.24g/kg of total nitrogen, 56.6g/kg of quick-acting phosphorus and 1g/kg of quick-acting potassium21.2 g/kg. The test adopts precision drilling, the row spacing is 25cm, and the basic seedling is 13 ten thousand per 667m2. The total nitrogen application is 20kg/667m2The nitrogen fertilizer operation is set to be 6: 4, and the additional fertilizer is applied at one time in the jointing and booting period; each treatment applying P2O510kg/667m2、K2O 10kg/667m2The phosphorus-potassium fertilizer is applied at one time, other management measures are uniformly carried out according to a high-yield cultivation management mode, seeding is carried out in 31 days of 10 and 8 months in 2017, and 30 times of liquid of the leaf fertilizer is sprayed by using an artificial sprayer in the afternoon grouting period of 5 and 8 days in 2018, wherein the area of each treated cell is 4 × 6m2And repeating the test for 3 times, wherein the spraying dosage of each treated cell is 530mL, the spraying of equal amount of clear water is used as a control, the seeds are matured and harvested in 2018 in 6 months and 12 days, the seed yield and the selenium and zinc content of the seeds in the cell are investigated, and the test results are shown in table 1.
TABLE 1 Effect of foliar fertilizers on wheat yield increase and selenium and zinc enrichment
Figure BDA0002410338590000081
Figure BDA0002410338590000091
As can be seen from Table 1, the foliar fertilizer provided by the invention can obviously increase the yield of wheat, increase the yield by 7.21-11.82%, improve the selenium and zinc contents of grains, increase 258.12-361.78% and 112.36-196.91% respectively, wherein the foliar fertilizer provided by the embodiment 2 has obvious effects, increases the yield, the selenium and zinc contents of grains by 11.82%, 361.78% and 196.91% respectively compared with a control, achieves extremely obvious levels, achieves double effects of yield increase and selenium and zinc rich nutrition enhancement, and shows good application value.
And as can be seen from table 1, the addition of the aminopolysaccharide is important for the wheat yield increase of the foliar fertilizer and the improvement of selenium and zinc enrichment. The effect difference of the crop regulation and control effect is larger by adopting the matching of the aminopolysaccharide with specific molecular weight. Meanwhile, the foliar fertilizer provided by the invention has the technical effects of compatibility and synergy by matching of various substances.
The invention provides a selenium-rich and high-zinc foliar fertilizer for wheat, and a preparation method and application technology thereof. Wheat is used as a carrier, and the wheat rich in selenium and zinc elements is planted by improving and increasing the content of selenium and zinc in the wheat to be processed into flour products, so that the flour products are convenient for people to eat and absorb, the toxicity and safety risk caused by direct intake of common inorganic selenium in the selenium supplement process are avoided, and the flour products have obvious significance for fundamentally improving the per capita selenium and zinc intake of people in China.
The present invention is not limited to the embodiments disclosed above, and the present invention is intended to cover various modifications and equivalent changes within the technical scope described in the technical solutions of the present invention and within the technical solutions of the claims, and any modifications or improvements that can be easily made by those skilled in the art of the present invention are within the scope of the present invention as claimed.

Claims (8)

1. The selenium-rich high-zinc foliar fertilizer for the wheat is characterized in that each liter of foliar fertilizer contains the following raw materials by weight: 3-9 g of aminopolysaccharide, 4-8 g of sodium selenite, 10-20 g of zinc gluconate, 0.5-2 g of melatonin, 2-5 g of choline chloride and 5-10 g of citric acid; the aminopolysaccharide is one or a mixture of different molecular weights in the molecular weight range of 200KDa to 500 KDa.
2. The selenium-rich and high-zinc foliar fertilizer for wheat, as claimed in claim 1, is characterized in that: when the aminopolysaccharide has one molecular weight, the molecular weight of the aminopolysaccharide is 200 KDa-500 KDa;
when the aminopolysaccharide is a mixture of various different molecular weights, the aminopolysaccharide is a mixture of aminopolysaccharides with molecular weights of 200 KDa-500 KDa; the mass ratio of the aminopolysaccharide with the molecular weight of 300KDa to the aminopolysaccharide with the molecular weight of 400KDa is 1-2: 1; the mass ratio of the aminopolysaccharide with the molecular weight of 200KDa to the aminopolysaccharide with the molecular weight of 500KDa is 1-2: 1.
3. The preparation method of the selenium-rich and high-zinc foliar fertilizer for wheat as claimed in claim 1 or 2, which comprises the following steps:
(1) mixing the aminopolysaccharide, sodium selenite, citric acid and water to obtain an aminopolysaccharide selenium complex solution;
(2) and mixing the amino polysaccharide selenium complex solution with zinc gluconate, melatonin and choline chloride to obtain the selenium-rich and high-zinc leaf fertilizer for wheat.
4. The application of the wheat selenium-rich and high-zinc foliar fertilizer as claimed in any one of claims 1-2 or the wheat selenium-rich and high-zinc foliar fertilizer prepared by the preparation method as claimed in claim 3 in wheat planting.
5. The application of the selenium-rich and high-zinc foliar fertilizer for the wheat as claimed in claim 4 is characterized in that the application time of the selenium-rich and high-zinc foliar fertilizer for the wheat is the full-spike period or the filling period of the wheat; the frequency of use was 1 application throughout the growth cycle of wheat.
6. The application of the selenium-rich and high-zinc foliar fertilizer for wheat as claimed in claim 4 is applied after dilution; the dilution mode is water dilution; the weight ratio of the selenium-rich high-zinc foliar fertilizer to the water of the wheat is 1: (10-30).
7. The application of the fertilizer as claimed in claim 6, wherein the usage amount of the diluted selenium-rich and high-zinc foliar fertilizer for wheat is 5L-15L: 667m2
8. The application of the selenium-rich and high-zinc foliar fertilizer for the wheat is characterized in that any one of an artificial sprayer, a mechanical sprayer and an unmanned aerial vehicle is used for foliar spraying on the wheat.
CN202010174558.7A 2020-03-13 2020-03-13 Selenium-rich high-zinc leaf fertilizer for wheat and preparation method and application thereof Pending CN111377765A (en)

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN114315461A (en) * 2021-12-27 2022-04-12 江苏徐淮地区淮阴农业科学研究所 Selenium-rich foliar fertilizer, preparation method and application thereof, and planting method of selenium-rich asparagus
CN116041109A (en) * 2023-02-09 2023-05-02 苏州硒谷科技有限公司 Zinc-rich grain special water-soluble fertilizer and preparation method and application thereof

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