CN111670905A - Leaf surface conditioner formula for reducing cadmium content of rice by using small molecular acid and application method thereof - Google Patents
Leaf surface conditioner formula for reducing cadmium content of rice by using small molecular acid and application method thereof Download PDFInfo
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- CN111670905A CN111670905A CN202010515321.0A CN202010515321A CN111670905A CN 111670905 A CN111670905 A CN 111670905A CN 202010515321 A CN202010515321 A CN 202010515321A CN 111670905 A CN111670905 A CN 111670905A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/36—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a singly bound oxygen or sulfur atom attached to the same carbon skeleton, this oxygen or sulfur atom not being a member of a carboxylic group or of a thio analogue, or of a derivative thereof, e.g. hydroxy-carboxylic acids
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C21/00—Methods of fertilising, sowing or planting
- A01C21/005—Following a specific plan, e.g. pattern
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
- A01G22/20—Cereals
- A01G22/22—Rice
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G7/00—Botany in general
- A01G7/06—Treatment of growing trees or plants, e.g. for preventing decay of wood, for tingeing flowers or wood, for prolonging the life of plants
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/34—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
- A01N43/36—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom five-membered rings
- A01N43/38—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom five-membered rings condensed with carbocyclic rings
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/02—Sulfur; Selenium; Tellurium; Compounds thereof
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/16—Heavy metals; Compounds thereof
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Abstract
The invention discloses a leaf surface conditioner formula for reducing the cadmium content of rice by utilizing micromolecular acid and an application method thereof, and the leaf surface conditioner formula is prepared according to the following mass percentages: 20-25% of citric acid, 10-15% of malic acid, 0.2-0.9% of tryptophan, 30-50% of manganese sulfate and 10-15% of zinc sulfate. The application method comprises the following steps: dissolving a formula of 0.25kg to 3.75kg of leaf surface conditioner mixed in proportion into 0.5ML to 7.5L of aqueous solution to form mother solution of the leaf surface conditioner; diluting 30-1000 times of the expanding agent and the leaf surface conditioner mother liquor, and uniformly spraying the expanding agent and the leaf surface conditioner mother liquor on leaf surfaces in the rice flowering period, wherein the dosage of leaf surface fertilizers per hectare is 3.6-4.0 kg each time. The cadmium accumulation amount in the early rice and late rice varieties can be effectively reduced, the cadmium accumulation amount is not influenced by variety characteristics and growth seasons, and the cadmium reduction agent has the advantages of simplicity and convenience in operation, easiness in popularization, good cadmium reduction effect after spraying, low cost and the like.
Description
Technical Field
The invention relates to the technical field of agriculture, in particular to a leaf surface conditioner formula for reducing the cadmium content of rice by using small molecular acid and an application method thereof.
Background
Cadmium (Cd) is one of heavy metals with the strongest biological toxicity, and is the most common heavy metal pollution element in cultivated lands in China at present, and the point position standard exceeding rate is as high as 7%. In acid soil, rice has strong absorption and enrichment capacity to cadmium, and rice becomes a main source of heavy metal cadmium ingested by human bodies. In order to reduce the risk of cadmium pollution of rice to human health, the food safety standard (GB2762-2012) of China specifies that the limit standard of cadmium in rice is 0.2 mg-kg-1. However, as a large amount of cadmium can be fixed in cell walls of nutritive organs such as roots, stems and leaves of rice, the cadmium loses bioactivity and toxicity, and even if the cadmium in the rice exceeds the national limit standard, the cadmium does not have obvious influence on the yield and quality. Therefore, how to mobilize the recognition capability and the inhibition and control potential of the nutritive organs of the rice on the harmful heavy metal cadmium and improve the cadmium interception efficiency of the nutritive organs becomes a key technology which is bitter and explored by scientists.
Therefore, it is very important to develop a leaf surface conditioner formula for reducing the cadmium content of rice by using small molecular acid and an application method thereof.
Disclosure of Invention
The invention aims to overcome the technical problem of the prior art and provide a leaf surface conditioner formula for reducing the cadmium content of rice by utilizing micromolecular acid and an application method thereof. Meanwhile, the conditioner can also activate the activity of various proteins and enzymes in rice cells and improve the chelation of the proteins and the enzymes on cadmium ions. Therefore, the specific foliar conditioning agent is sprayed from the heading stage to the flowering stage of the rice, so that the transfer of cadmium from a nutrition organ to the rice during the rice filling period can be effectively inhibited, the cadmium content in the rice is obviously reduced, the use is more flexible, and the problems in the background technology can be effectively solved.
In order to solve the technical problems, the invention provides the following technical scheme:
in a first aspect, the invention provides a leaf surface conditioner formula for reducing the cadmium content of rice by using small molecular acid, which is prepared according to the following mass percentage:
20-25% of citric acid, 10-15% of malic acid, 0.2-0.9% of tryptophan, 30-50% of manganese sulfate and 10-15% of zinc sulfate.
In a first aspect, the technical effects or advantages of the present invention are: after a conditioner consisting of micromolecular acid is sprayed on the rice leaves, a liquid film is quickly formed on the leaf surfaces, effective components are diffused into an apoplast (a free space formed by cell walls and intercellular spaces) system through pores and intercellular spaces on the leaves, the long-distance transportation is quickly carried out, and the cadmium ion interception mechanism of rice nutritive organs is quickly started. Meanwhile, the conditioner can also activate the activity of various proteins and enzymes in rice cells and improve the chelation of the proteins and the enzymes on cadmium ions. Therefore, the specific foliar conditioning agent is sprayed from the heading stage to the flowering stage of the rice, so that the transfer of cadmium from a nutrition organ to the rice during the rice filling period can be effectively inhibited, the cadmium content in the rice is obviously reduced, and the use is more flexible.
In a second aspect, a method for applying a foliar conditioner formulation for reducing the cadmium content of rice using a small molecular acid, comprising the foliar conditioner formulation, comprising the steps of:
dissolving a formula of 0.25kg to 3.75kg of leaf surface conditioner mixed in proportion into 0.5ML to 7.5L of aqueous solution to form mother solution of the leaf surface conditioner;
diluting 30-1000 times of the expanding agent and the leaf surface conditioner mother liquor, and uniformly spraying the expanding agent and the leaf surface conditioner mother liquor on leaf surfaces in the rice flowering period, wherein the dosage of leaf surface fertilizers per hectare is 3.6-4.0 kg each time.
As a preferable scheme, after diluting the foliar conditioner before spraying, 10-15 mL of surfactant is added into every 30L of diluent, and the diluted solution is fully and uniformly mixed.
As a preferred scheme, in the period from heading to heading of rice, the aqueous solution of the leaf surface conditioner is uniformly sprayed on the leaf surfaces for 1-2 times.
As a preferable scheme, the formula of the leaf surface conditioner is prepared according to the following mass percentage:
25% of citric acid, 12% of malic acid, 0.5% of tryptophan, 40% of manganese sulfate and 12% of zinc sulfate.
As a preferable scheme, the formula of the leaf surface conditioner is prepared according to the following mass percentage:
23.0% of citric acid, 14.5% of malic acid, 0.5% of tryptophan, 47.0% of manganese sulfate and 15.0% of zinc sulfate.
In the second aspect, the technical effects or advantages of the invention are as follows: the product is sprayed within 5 days from heading stage to flowering of rice based on inhibiting the output of cadmium ions in nutritive organs during the filling period of rice grains, can effectively reduce the accumulation of cadmium in rice of early rice and late rice varieties, is not influenced by variety characteristics and growth seasons, and has the advantages of simple and convenient operation, easy popularization, good cadmium reduction effect after spraying, low cost and the like; the foliar fertilizer has the advantages of small dosage, quick absorption, no side effect on the environment, important reference value for regulating and controlling the cadmium accumulation of other grain crops, and very wide application prospect.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In order to better understand the technical scheme, the technical scheme is described in detail in the following with the specific embodiments of the specification.
Example 1:
the invention provides a leaf surface conditioner formula for reducing the cadmium content of rice by utilizing a small molecular acid, wherein the used citric acid, malic acid, tryptophan, manganese sulfate and zinc sulfate are all chemically pure and are purchased from Yuyin science development Co., Ltd, Tianjin, and an extender is purchased from International biotechnology Co., Ltd, Noron (Beijing), and an application method of the leaf surface conditioner formula for reducing the cadmium content of rice by utilizing the small molecular acid comprises the following specific application methods:
according to the proportion of 20 percent of citric acid, 10 percent of malic acid, 0.2 percent of tryptophan, 30 percent of manganese sulfate and 10 percent of zinc sulfate, 250g of solid powder mixed according to the proportion is dissolved in 500ml of water solution to form mother liquor of the leaf surface conditioner. Diluting 30-1000 times of mother liquor of a commercially available expanding agent and a leaf surface conditioner, uniformly spraying the mother liquor on leaf surfaces in the rice flowering period, wherein the dosage of leaf surface fertilizer per hectare is 3.6-4.0 kg each time, and the content of Cd in rice can be reduced by 40%.
Example 2:
the invention provides a leaf surface conditioner formula for reducing the cadmium content of rice by utilizing a small molecular acid, wherein the used citric acid, malic acid, tryptophan, manganese sulfate and zinc sulfate are all chemically pure and are purchased from Yuyin science development Co., Ltd, Tianjin, and an extender is purchased from International biotechnology Co., Ltd, Noron (Beijing), and an application method of the leaf surface conditioner formula for reducing the cadmium content of rice by utilizing the small molecular acid comprises the following specific application methods:
according to the technical scheme, 250g of solid powder mixed in proportion is dissolved in 500ml of aqueous solution according to the proportion of 25% of citric acid, 12% of malic acid, 0.5% of tryptophan, 40% of manganese sulfate and 12% of zinc sulfate to form mother liquor of a leaf surface conditioner, a commercially available expanding agent and the mother liquor of the leaf surface conditioner are diluted by 30-1000 times and are uniformly sprayed on leaf surfaces in the flowering period of rice, and the dosage of a leaf surface fertilizer per hectare is 3.6-4.0 kg each time, so that the content of Cd in the rice can be reduced by 50%.
Example 3:
the invention provides a leaf surface conditioner formula for reducing the cadmium content of rice by utilizing a small molecular acid, wherein the used citric acid, malic acid, tryptophan, manganese sulfate and zinc sulfate are all chemically pure and are purchased from Yuyin science development Co., Ltd, Tianjin, and an extender is purchased from International biotechnology Co., Ltd, Noron (Beijing), and an application method of the leaf surface conditioner formula for reducing the cadmium content of rice by utilizing the small molecular acid comprises the following specific application methods:
3.75kg of leaf surface conditioner is prepared according to the content ratio of 23.0% of citric acid, 14.5% of malic acid, 0.5% of tryptophan, 47.0% of manganese sulfate and 15.0% of zinc sulfate, the leaf surface conditioner is dissolved in 7.5L of tap water to be used as leaf surface fertilizer mother liquor, the leaf surface fertilizer mother liquor is diluted by 100 times in the flowering period of rice, 150ml of expanding agent is added, after uniform mixing, leaf surface spraying is carried out by using a knapsack sprayer, the dosage of the leaf surface conditioner per hectare is 3.6-4.0 kg each time, and the content of Cd in the rice can be reduced by 60%.
The product is sprayed within 5 days from heading stage to flowering of rice based on inhibiting the output of cadmium ions in nutritive organs during the filling period of rice grains, can effectively reduce the accumulation of cadmium in rice of early rice and late rice varieties, is not influenced by variety characteristics and growth seasons, and has the advantages of simple and convenient operation, easy popularization, good cadmium reduction effect after spraying, low cost and the like; the foliar fertilizer has the advantages of small dosage, quick absorption, no side effect on the environment, important reference value for regulating and controlling the cadmium accumulation of other grain crops, and very wide application prospect.
The invention has the technical effects or advantages that: the product is sprayed within 5 days from heading stage to flowering of rice based on inhibiting the output of cadmium ions in nutritive organs during the filling period of rice grains, can effectively reduce the accumulation of cadmium in rice of early rice and late rice varieties, is not influenced by variety characteristics and growth seasons, and has the advantages of simple and convenient operation, easy popularization, good cadmium reduction effect after spraying, low cost and the like; the foliar fertilizer has the advantages of small dosage, quick absorption, no side effect on the environment, important reference value for regulating and controlling the cadmium accumulation of other grain crops, and very wide application prospect.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A leaf surface conditioner formula for reducing the cadmium content of rice by utilizing micromolecular acid is characterized in that: the paint is prepared from the following components in percentage by mass:
20-25% of citric acid, 10-15% of malic acid, 0.2-0.9% of tryptophan, 30-50% of manganese sulfate and 10-15% of zinc sulfate.
2. An application method of a leaf surface conditioner formula for reducing the cadmium content of rice by using small molecular acid is characterized in that: a formulation comprising the foliar conditioning agent of claim 1, comprising the steps of:
dissolving a formula of 0.25kg to 3.75kg of leaf surface conditioner mixed in proportion into 0.5ML to 7.5L of aqueous solution to form mother solution of the leaf surface conditioner;
diluting 30-1000 times of the expanding agent and the leaf surface conditioner mother liquor, and uniformly spraying the expanding agent and the leaf surface conditioner mother liquor on leaf surfaces in the rice flowering period, wherein the dosage of leaf surface fertilizers per hectare is 3.6-4.0 kg each time.
3. The method of applying a foliar conditioner formulation using small molecule acid to reduce the cadmium content of rice according to claim 2 wherein: diluting the leaf surface conditioner before spraying, adding 10-15 mL of surfactant into every 30L of diluent, and fully and uniformly mixing with the diluent.
4. The method of applying a foliar conditioner formulation using small molecule acid to reduce the cadmium content of rice according to claim 2 wherein: and (3) uniformly spraying the leaf surface conditioner aqueous solution on the leaf surfaces for 1-2 times in the period from heading to heading of rice.
5. The method of applying a foliar conditioner formulation using small molecule acid to reduce the cadmium content of rice according to claim 2 wherein: the formula of the leaf surface conditioner is prepared from the following components in percentage by mass:
25% of citric acid, 12% of malic acid, 0.5% of tryptophan, 40% of manganese sulfate and 12% of zinc sulfate.
6. The method of applying a foliar conditioner formulation using small molecule acid to reduce the cadmium content of rice according to claim 2 wherein: the formula of the leaf surface conditioner is prepared from the following components in percentage by mass:
23.0% of citric acid, 14.5% of malic acid, 0.5% of tryptophan, 47.0% of manganese sulfate and 15.0% of zinc sulfate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010515321.0A CN111670905A (en) | 2020-06-09 | 2020-06-09 | Leaf surface conditioner formula for reducing cadmium content of rice by using small molecular acid and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010515321.0A CN111670905A (en) | 2020-06-09 | 2020-06-09 | Leaf surface conditioner formula for reducing cadmium content of rice by using small molecular acid and application method thereof |
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| CN107857663A (en) * | 2017-12-20 | 2018-03-30 | 农业部环境保护科研监测所 | Foliar fertilizer of cadmium content and preparation method thereof in a kind of reduction rice |
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| CN110467502A (en) * | 2019-09-02 | 2019-11-19 | 农业农村部环境保护科研监测所 | A kind of foliage fertilizer formulation that Cd concentration of brown rice is effectively reduced and its method of administration |
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2020
- 2020-06-09 CN CN202010515321.0A patent/CN111670905A/en active Pending
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