CN111943766A - Cadmium-reducing rice foliar fertilizer and use method thereof - Google Patents
Cadmium-reducing rice foliar fertilizer and use method thereof Download PDFInfo
- Publication number
- CN111943766A CN111943766A CN202010759175.6A CN202010759175A CN111943766A CN 111943766 A CN111943766 A CN 111943766A CN 202010759175 A CN202010759175 A CN 202010759175A CN 111943766 A CN111943766 A CN 111943766A
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- Prior art keywords
- rice
- cadmium
- foliar fertilizer
- fertilizer
- use method
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C11/00—Other nitrogenous fertilisers
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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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- 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
- C05G3/50—Surfactants; Emulsifiers
Abstract
The application provides a cadmium-reducing rice foliar fertilizer and a use method thereof, wherein the foliar fertilizer comprises kynurenic acid, taurine, alpha-ketoglutaric acid, tryptamine and a surfactant. The application provides a cadmium-reducing rice foliar fertilizer and a use method thereof, the components of the foliar fertilizer are food-grade safe and nontoxic, the foliar fertilizer has good biological safety, does not generate pollution risks, can directly act on rice nutritive organs, can effectively inhibit the accumulation of heavy metal cadmium in rice grains, simultaneously improves the contents of nutrient elements of potassium, magnesium, calcium and manganese in the rice grains, and improves the nutritional value of the rice grains while ensuring the safe production of the grains; the leaf fertilizer can effectively reduce the accumulation of cadmium in rice grains only by spraying once in the flowering phase, is simple to use and easy to popularize, and can effectively reduce the cost of safe production of farmland rice polluted by cadmium.
Description
Technical Field
The application relates to the technical field of agriculture, in particular to a cadmium-reducing rice foliar fertilizer and a using method thereof.
Background
The cadmium is mainly from volcanic eruption, rock weathering and other processes, but with the participation of human activities, the cadmium excessively exploits underground rock circle mining areas, and causes pollution to atmosphere, water and soil due to waste gas, waste water and waste residues generated in the mining and smelting processes. Cadmium and compounds thereof have stronger water solubility and fat solubility and higher biological activity, so that the diversity of microorganisms in soil can be influenced, and the cadmium and the compounds thereof can be accumulated in roots, stems, leaves and fruits of crops to influence the quality of agricultural products, and the national soil pollution condition survey bulletin published in 4 months 2014 shows that the point exceeding rate of cadmium is highest, wherein the cadmium pollution of a paddy field is the most severe.
The rice is the grain crop with the largest planting area in China and is also an important grain source in China. The rice is easy to enrich heavy metal cadmium, and potential threats are generated to human health through a food chain. The long-term low-dose cadmium exposure caused by eating the cadmium rice has three causes of carcinogenesis, teratogenesis and mutagenesis, and seriously threatens the safe production of grains and the health of human bodies.
At present, the heavy metal soil remediation is mainly chemical remediation, physical remediation and biological remediation. The traditional physical and chemical remediation technology has the advantages of short time, quick effect and the like for treating the seriously polluted soil, but is usually accompanied by the risks of high energy consumption, high cost, secondary pollution and the like, so that the traditional physical and chemical remediation technology is not suitable for the remediation of the large-scale polluted soil. The biological remediation mainly comprises phytoremediation and microbial remediation, the toxicity of heavy metals is reduced by enriching and extracting the heavy metals in soil or changing the chemical forms of the heavy metals in the soil by utilizing the metabolic activities of the phytoremediation and the microbial remediation, and the advantage of no secondary pollution is achieved.
Disclosure of Invention
The application provides the cadmium-reducing rice foliar fertilizer and the use method thereof for solving the technical problems.
The technical scheme adopted by the application is as follows: the leaf fertilizer for the cadmium-reducing rice is characterized by comprising kynurenic acid, taurine, alpha-ketoglutaric acid, tryptamine and a surfactant.
Furthermore, each liter of the foliar fertilizer contains 0.5 to 2.0g of canine uric acid, 0.16 to 0.64g of taurine, 0.1 to 0.2g of alpha-ketoglutaric acid, 0.1 to 0.2g of tryptamine and 1.5 to 2mL of surfactant, wherein the surfactant is preferably Tween 80.
Further, each liter of the foliar fertilizer contains 1.0g of canine uric acid, 0.32g of taurine, 0.1g of alpha-ketoglutaric acid, 0.1g of tryptamine and 2mL of surfactant.
The application method of the cadmium-reducing rice foliar fertilizer is characterized in that the foliar fertilizer is uniformly sprayed on the surfaces of rice leaves in the heading and flowering periods of rice.
Further, when the foliar fertilizer is sprayed, the time periods of direct and violent sunlight and the time periods of water carrying of rice leaves are avoided, and the spraying time is preferably 9 am or 4 pm.
In the application, the addition of the surfactant can reduce the interfacial tension between the conditioner solution and the leaf surface, so that the active ingredients are better adsorbed on the leaf surface of the rice, the active ingredients can effectively enter rice cells to play an active role, the utilization rate of the leaf surface conditioner is improved, and the surfactant is preferably Tween 80; the kynurenic acid, the taurine, the alpha-ketoglutaric acid and the tryptamine are matched and cooperated with each other, so that the heavy metal cadmium can be obviously and specifically chelated and fixed, the transport of the cadmium in the rice can be regulated and controlled, particularly, the cadmium element can be fixed in leaves in advance when the leaves are sprayed at the flowering period of the rice, the cadmium element can be further prevented from being transferred to the seeds along with other elements from the leaves at the filling period of the rice, the cadmium content of the rice seeds (edible parts) is finally reduced to be within the national safety standard (0.2mg/kg), and the absorption and accumulation of nutrient elements in the seeds can be promoted.
The application has the advantages and positive effects that: the application provides a cadmium-reducing rice foliar fertilizer and a use method thereof, the components of the foliar fertilizer are food-grade safe and nontoxic, the foliar fertilizer has good biological safety, does not generate pollution risks, can directly act on rice nutritive organs, can effectively inhibit the accumulation of heavy metal cadmium in rice grains, simultaneously improves the contents of nutrient elements of potassium, magnesium, calcium and manganese in the rice grains, and improves the nutritional value of the rice grains while ensuring the safe production of the grains; the leaf fertilizer can effectively reduce the accumulation of cadmium in rice grains only by spraying once in the flowering period, is simple to use and easy to popularize, and can effectively reduce the cost of safe production of rice.
In addition to the technical problems addressed by the present application, the technical features constituting the technical solutions, and the advantages brought by the technical features of the technical solutions described above, other technical problems solved by the present application, other technical features included in the technical solutions, and advantages brought by the technical features will be described in further detail below.
Detailed Description
The present application will be described in further detail with reference to examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail with reference to examples.
In the following examples and comparative examples of the present application, a Hunan Tan heavy metal contaminated paddy field is adopted as a cadmium contaminated paddy field (cadmium content in soil is 0.55mg/kg, pH is 5.5< pH <6.5), according to the national standard of soil environmental quality agricultural land soil pollution risk control standard (trial)
(GB15618-2018), the rice field is higher than a risk screening value and lower than a risk control value, so that the risk of soil pollution such as edible agricultural products not meeting quality safety standards exists, and safety utilization measures such as agricultural regulation and control should be taken in principle.
Example 1
(1) And each liter of the foliar fertilizer contains 0.5g of kynurenic acid, 0.16g of taurine, 0.15g of alpha-ketoglutaric acid, 0.15g of tryptamine and 1.5mL of surfactant.
(2) During the experiment, the field management mode was performed according to the local management mode. The foliar fertilizer is applied under windless and rainless sunny weather, and is uniformly sprayed on the surfaces of rice leaves according to the amount of 30L/mu in the heading and flowering period of rice. If it rains within four hours after spraying, the spraying needs to be supplemented again. The experiment development time is 7 months in 2019 to 11 months in 2019. Setting contrast, namely, spraying clear water instead of the foliar fertilizer.
(3) After the rice is ripe, collecting the rice.
Example 2
(1) Each liter of the foliar fertilizer contains 1.0g of kynurenic acid, 0.32g of taurine, 0.1g of alpha-ketoglutaric acid, 0.1g of tryptamine and 2mL of surfactant.
(2) During the experiment, the field management mode was performed according to the local management mode. The foliar fertilizer is applied under windless and rainless sunny weather, and is uniformly sprayed on the surfaces of rice leaves according to the amount of 30L/mu in the heading and flowering period of rice. If it rains within four hours after spraying, the spraying needs to be supplemented again. The experiment development time is 7 months in 2019 to 11 months in 2019.
(3) After the rice is ripe, collecting the rice.
Example 3
(1) Each liter of the foliar fertilizer contains 1.5g of kynurenic acid, 0.48g of taurine, 0.2g of alpha-ketoglutaric acid, 0.17g of tryptamine and 1.8mL of surfactant.
(2) During the experiment, the field management mode was performed according to the local management mode. The foliar fertilizer is applied under windless and rainless sunny weather, and is uniformly sprayed on the surfaces of rice leaves according to the amount of 30L/mu in the heading and flowering period of rice. If it rains within four hours after spraying, the spraying needs to be supplemented again. The experiment development time is 7 months in 2019 to 11 months in 2019.
(3) After the rice is ripe, collecting the rice.
Example 4
(1) Each liter of the foliar fertilizer contains 2.0g of kynurenic acid, 0.64g of taurine, 0.17g of alpha-ketoglutaric acid, 0.2g of tryptamine and 1.6mL of surfactant.
(2) During the experiment, the field management mode was performed according to the local management mode. The foliar fertilizer is applied under windless and rainless sunny weather, and is uniformly sprayed on the surfaces of rice leaves according to the amount of 30L/mu in the heading and flowering period of rice. If it rains within four hours after spraying, the spraying needs to be supplemented again. The experiment development time is 7 months in 2019 to 11 months in 2019.
(3) After the rice is ripe, collecting the rice.
Comparative example 1
And the clear water is used for replacing the foliar fertilizer for spraying. After the rice is ripe, collecting the rice.
The rice collected in example 1, example 2, example 3, example 4 and comparative example 1 was subjected to determination of cadmium content and contents of potassium, magnesium, calcium and manganese as nutrient elements, and the determination results are shown in table 1:
TABLE 1
As can be seen from table 1, the foliar fertilizer of the present application can effectively reduce the content of cadmium in rice, and simultaneously greatly improve the content of the nutritional elements potassium, magnesium, calcium, and manganese in rice, wherein in example 2, when each liter of the foliar fertilizer contains 1.0g of kynurenic acid, 0.32g of taurine, 0.1g of α -ketoglutaric acid, 0.1g of tryptamine, and 2mL of surfactant, the cadmium reduction effect is the best, the content of cadmium in rice seeds of the foliar fertilizer of example 2 is reduced by 56.9%, and the content of the nutritional elements potassium, magnesium, calcium, and manganese in rice is improved the most, which is respectively improved by 132.2%, 166.7%, 66.4%, and 61.8%.
The embodiments of the present application have been described in detail, but the description is only for the preferred embodiments of the present application and should not be construed as limiting the scope of the application. All equivalent changes and modifications made within the scope of the present application shall fall within the scope of the present application.
Claims (5)
1. The leaf fertilizer for the cadmium-reducing rice is characterized by comprising kynurenic acid, taurine, alpha-ketoglutaric acid, tryptamine and a surfactant.
2. The foliar fertilizer for rice with reduced cadmium as claimed in claim 1, wherein each liter of the foliar fertilizer contains 0.5-2.0g of kynurenic acid, 0.16-0.64g of taurine, 0.1-0.2g of alpha-ketoglutaric acid, 0.1-0.2g of tryptamine, 1.5-2mL of surfactant.
3. The foliar fertilizer for rice with reduced cadmium as claimed in claim 2, wherein each liter of foliar fertilizer contains 1.0g of kynurenic acid, 0.32g of taurine, 0.1g of alpha-ketoglutaric acid, 0.1g of tryptamine, 2mL of surfactant.
4. The use method of the leaf fertilizer for the cadmium-reduced rice as claimed in any one of claims 1 to 3, wherein the leaf fertilizer is uniformly sprayed on the surfaces of the rice leaves in the heading and flowering period of the rice.
5. The use method of the leaf fertilizer for the cadmium-reduced rice as claimed in claim 4, wherein the leaf fertilizer is sprayed in a time period of avoiding the direct and violent sunlight and a time period of carrying water by rice leaves.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010759175.6A CN111943766A (en) | 2020-07-31 | 2020-07-31 | Cadmium-reducing rice foliar fertilizer and use method thereof |
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| CN202010759175.6A CN111943766A (en) | 2020-07-31 | 2020-07-31 | Cadmium-reducing rice foliar fertilizer and use method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113749088A (en) * | 2021-10-11 | 2021-12-07 | 北京林业大学 | Peony cut flower vase preservative solution |
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- 2020-07-31 CN CN202010759175.6A patent/CN111943766A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113749088A (en) * | 2021-10-11 | 2021-12-07 | 北京林业大学 | Peony cut flower vase preservative solution |
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Application publication date: 20201117 |