AU2021101030A4 - Foliar conditioner for reducing cadmium content in rice by using threonine and application method thereof - Google Patents

Foliar conditioner for reducing cadmium content in rice by using threonine and application method thereof Download PDF

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AU2021101030A4
AU2021101030A4 AU2021101030A AU2021101030A AU2021101030A4 AU 2021101030 A4 AU2021101030 A4 AU 2021101030A4 AU 2021101030 A AU2021101030 A AU 2021101030A AU 2021101030 A AU2021101030 A AU 2021101030A AU 2021101030 A4 AU2021101030 A4 AU 2021101030A4
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rice
foliar
conditioner
threonine
cadmium content
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AU2021101030A
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Na Li
Zhiyuan Yang
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Sichuan Agricultural University
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Sichuan Agricultural University
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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
    • A01N37/44—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 nitrogen atom attached to the same carbon skeleton by a single or double bond, this nitrogen atom not being a member of a derivative or of a thio analogue of a carboxylic group, e.g. amino-carboxylic acids
    • 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
    • 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
    • A01N37/02—Saturated carboxylic acids or thio analogues thereof; Derivatives thereof
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
    • C05D9/00—Other inorganic fertilisers
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
    • 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
    • A01N2300/00—Combinations or mixtures of active ingredients covered by classes A01N27/00 - A01N65/48 with other active or formulation relevant ingredients, e.g. specific carrier materials or surfactants, covered by classes A01N25/00 - A01N65/48

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  • Life Sciences & Earth Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Plant Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Zoology (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Botany (AREA)
  • Fertilizers (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

The present disclosure provides a foliar conditioner that uses threonine to reduce the cadmium content of rice and an application method thereof, and relates to the technical field of agricultural production materials. The foliar conditioner is formulated according to the following mass percentages: threonine 30-40%, succinic acid 8-18%, malic acid 12-22%, manganese chloride 13-23% and zinc sulfate 12-22%. The present disclosure can effectively inhibit the transfer of cadmium from nutrient organs to rice during rice filling, significantly reduce the cadmium content in the rice, improve the flavor quality and nutritional quality of the rice, and effectively reduce the risk of cadmium pollution in the rice to human health.

Description

FOLIAR CONDITIONER FOR REDUCING CADMIUM CONTENT IN RICE BY USING THREONINE AND APPLICATION METHOD THEREOF TECHNICAL FIELD
[0001] The present disclosure relates to the technical field of agricultural production materials, in particular to a foliar conditioner for reducing the cadmium content of rice by using threonine and an application method thereof.
BACKGROUND
[0002] Cadmium (Cd) is one of the most biologically toxic heavy metals. At present, the most common heavy metal pollution element in our country's arable land has a point exceeding rate of over 8%. In acid soils, rice has a strong ability to absorb and accumulate cadmium, and rice has become the main source of heavy metal cadmium intake by the human body. In order to reduce the risk of cadmium pollution in rice to human health, our country's food safety standard (GB2762-2012) stipulates that the limit of cadmium in rice is 0.2mg-kg-1
[0003] . Since the cell walls of the vegetative organs such as rice roots, stems and leaves can fix a large amount of cadmium, cadmium loses its biological activity and toxicity. Therefore, how to mobilize the rice vegetative organs' ability to recognize the harmful heavy metal cadmium and their blocking potential to improve the interception efficiency of cadmium by the vegetative organs, in order to reduce the risk of rice cadmium pollution to human health has become a technical problem to be solved by those skilled in the art.
SUMMARY
[0004] In view of this, one of the objectives of the present disclosure is to provide a foliar conditioner for reducing the cadmium content of rice by using threonine, so as to solve the technical problem of the risk of human health caused by cadmium pollution in rice in the prior art.
[0005] The second object of the present disclosure is to provide a method for applying a foliar conditioner for reducing the cadmium content of rice by using threonine.
[0006] In order to achieve one of the above objectives, the present disclosure provides a foliar conditioner for reducing the cadmium content of rice by using threonine, which is formulated according to the following mass percentages: threonine 30-40%, succinic acid 8-18%, malic acid 12-22%, manganese chloride 13-23% and zinc sulfate 12-22%.
[0007] Preferably, threonine 30.5%, succinic acid 10.0%, malic acid 21.5%, manganese chloride 16.5%, and zinc sulfate 21.5%.
[0008] Preferably, threonine 34.5%, succinic acid 12.5%, malic acid 17.5%, manganese chloride 18.5%, and zinc sulfate 17.0%.
[0009] Preferably, threonine 38.5%, succinic acid 14.5%, malic acid 12.5%, manganese chloride 20.5% and zinc sulfate 14.0%.
[0010] In order to achieve the second objective above, the present disclosure provides a method for applying a foliar conditioner 8- 1 8 %, which comprises the following steps:
[0011] Dissolve 0.5kg~2kg of the foliar conditioner as described above in proportion to the 2L~8L aqueous solution to obtain a stock solution of the foliar surface conditioner;
[0012] Dilute the stock solution of the extender and foliar conditioner by 500-800 times, and spray it evenly on the leaves during the flowering period of the rice, the amount of foliar fertilizer per hectare is 4.0-5.0 kg each time.
[0013] Preferably, after the foliar surface conditioner is diluted before spraying, add 12.5-20 mL of surfactant to every 10 L of the diluted solution, and mixed thoroughly with the diluted solution.
[0014] Preferably, spray the aqueous solution of the foliar conditioner is uniformly on leaves surface from heading stage to full heading stage of rice, spray 1 to 2 times.
[0015] The foliar conditioner for reducing the cadmium content of rice by using threonine provided by the present disclosure has the following technical effects:
[0016] Spraying the foliar conditioner containing threonine from the heading stage to the flowering stage of rice can effectively inhibit the transfer of cadmium from the vegetative organs to the rice during the rice filling period, significantly reduce the cadmium content in the grain and improve the flavor and nutritional quality of the rice, which effectively reduce the risk of rice cadmium pollution to human health.
[0017] The application method of the foliar conditioner for reducing the cadmium content of rice by using threonine provided by the present disclosure has the following technical effects:
[0018] Based on the suppression of the output of cadmium ions in the vegetative organs during rice grain filling, spraying within 4 days after rice heading to flowering can effectively reduce the accumulation of cadmium in single-cropping middle rice varieties, regardless of the variety characteristics and growing season. It has the advantages of simple operation, easy promotion, good cadmium reduction effect after spraying, and low cost; it requires low amount of foliar fertilizer, fast absorption, no side effects on the environment, and has important reference value for the regulation of cadmium accumulation in other food crops, which has a very widely application prospect.
DESCRIPTION OF THE EMBODIMENTS
[0019] In order to make the objectives, technical solutions and advantages of the present disclosure clearer, the technical solutions of the present disclosure will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments of the present disclosure, all other implementations obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present disclosure.
[0020] In order for better understanding the above technical solutions, the above technical solutions will be described in detail below with reference to specific embodiments.
[0021] Threonine is the most important ingredient in foliar conditioners. It is a neutral aliphatic amino acid containing hydroxyl and is easily soluble in water. It is an important precursor for the synthesis of biological substances such as purines, pyrimidines and phospholipids in cells. After spraying on rice leaves, the conditioning agent with threonine as the critical composition can quickly enter the mesophyll cells through the stomata and intercellular spaces on the leaves, and quickly transport long distances, stimulates the interception mechanism of the vegetative organs of rice to cadmium ions. Therefore, spraying the foliar conditioner containing threonine from the heading stage to the flowering stage of rice can effectively inhibit the transfer of cadmium from the vegetative organs to the rice during the rice filling period, and significantly reduce the cadmium content in rice, improve the flavor quality and nutritional quality of rice, which effectively reduces the risk of cadmium pollution in rice to human health.
[0022] Example 1:
[0023] The foliar conditioner for reducing the cadmium content of rice by using threonine. The succinic acid, malic acid, threonine, manganese chloride and zinc sulfate used are all chemically pure.
[0024] The application method of the foliar conditioner for reducing the cadmium content of rice by using threonine, the specific application method is:
[0025] Succinic acid 10.0%, malic acid 21.5%, manganese chloride 16.5%, zinc sulfate
21.5% and threonine 30.5%, solid powder 100g mixed in proportions are dissolved in 500ml of aqueous solution to obtain a foliar conditioner stock solution.
[0026] Dilute the mother liquor of the commercially available extender and foliar conditioner by 500-800 times, and spray it evenly on the leaves during the flowering period of the rice. The amount of foliar fertilizer per hectare is 4.2-4.8kg each time, which can decrease the Cd content in the rice for 37.8%.
[0027] Example 2:
[0028] The foliar conditioner for reducing the cadmium content of rice by using threonine. The succinic acid, malic acid, threonine, manganese chloride and zinc sulfate used are all chemically pure.
[0029] The application method of the foliar conditioner for reducing the cadmium content of rice by using threonine, the specific application method is:
[0030] Succinic acid 12.5%, malic acid 17.5%, manganese chloride 18.5%, zinc sulfate 17.0% and threonine 34 .5%, foliar conditioner 1.23kg mixed in proportions are dissolved in 6.2L water as foliar fertilizer stock solution;
[0031] During the flowering period of rice, dilute the foliar fertilizer stock solution by 600 times, add 30ml of extender, and after mixing, use a walking electric sprayer for foliar spray. The dosage of foliar conditioner per hectare is 4.2~4.7kg, which can effectively reduce the Cd content of rice for 42.5%.
[0032] Example 3:
[0033] The foliar conditioner for reducing the cadmium content of rice by using threonine. The succinic acid, malic acid, threonine, manganese chloride and zinc sulfate used are all chemically pure.
[0034] The application method of the foliar conditioner for reducing the cadmium content of rice by using threonine, the specific application method is:
[0035] Succinic acid 14.5%, malic acid 12.5%, manganese chloride 20.5%, zinc sulfate 14.0% and threonine 38.5%, foliar conditioner 3.0kg mixed in proportions are dissolved in 15.OL of water as foliar fertilizer stock solution;
[0036] During the flowering period of rice, dilute the foliar fertilizer mother liquor by 550 times, add 75ml of extender, and after mixing, use a walking electric sprayer for foliar spray. The dosage of foliar conditioner per hectare is 4.4~5.0kg, which can effectively reduce the Cd content of rice for 40.4%.
[0037] The foliar conditioner is based on suppressing the output of cadmium ions in the vegetative organs during rice grain filling, and spraying within 4 days after rice heading to flowering can effectively reduce the cadmium accumulation in early and late rice varieties, regardless of the variety characteristics and the growing season, it has the advantages of simple operation, easy promotion, good cadmium reduction effect after spraying, low cost, etc.; less foliar fertilizer required, fast absorption, no side effects on the environment, and cadmium accumulation in other food crops. The regulation and control has important reference value and has very broad application prospects.
[0038] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Changes or substitutions can easily be thought of by those skilled in the art within the technical scope disclosed by the present disclosure should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims (7)

CLAIMS WHAT IS CLAIMED IS:
1. A foliar conditioner for reducing the cadmium content of rice by using threonine, characterized in that, it is formulated according to the following mass percentages: threonine -40%, succinic acid 8-18%, malic acid 12-22%, manganese chloride 13~23% and zinc sulfate 12~22%.
2. The foliar conditioner for reducing the cadmium content of rice by using threonine according to claim 1, characterized in that, threonine 30.5%, succinic acid 10.0%, malic acid 21.5%, manganese chloride 16.5% and zinc sulfate 21.5%.
3. The foliar conditioner for reducing the cadmium content of rice by using threonine according to claim 1, characterized in that, threonine 34.5%, succinic acid 12.5%, malic acid 17.5%, manganese chloride 18.5% and zinc sulfate 1 7 .0 %.
4. The foliar conditioner for reducing the cadmium content of rice by using threonine according to claim 1, characterized in that, threonine 38.5%, succinic acid 14.5%, malic acid 12.5%, manganese chloride 20.5% and zinc sulfate 14.0%.
5. An application method of a foliar conditioner for reducing the cadmium content of rice by using threonine, characterized in that it comprises the following steps:
0.5kg~2kg of the foliar surface conditioner according to claim 1 mixed in proportion and dissolved in 2L~8L of aqueous solution to obtain a stock solution of the foliar surface conditioner;
Dilute the stock solution of the extender and foliar conditioner by 500-800 times, and spray it evenly on the leaves during the flowering period of the rice, the amount of foliar fertilizer per hectare is 4.0-5.0 kg each time.
6. The application method of the foliar conditioner for reducing the cadmium content of rice by using threonine according to claim 5, characterized in that, after the foliar conditioner is diluted before spraying, add 12.5-20 mL surfactant to every 10L of the diluted solution, and mix thoroughly with the diluted solution.
7. The application method of the foliar conditioner for reducing the cadmium content of rice by using threonine according to claim 5, characterized in that, spray the aqueous solution of the foliar conditioner is uniformly on leaves surface from heading stage to full heading stage of rice, spray 1 to 2 times.
AU2021101030A 2021-02-24 2021-02-24 Foliar conditioner for reducing cadmium content in rice by using threonine and application method thereof Ceased AU2021101030A4 (en)

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