Rice cadmium-reducing and yield-increasing agent and production method thereof
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A yield increasing agent, rice technology, applied in fertilization methods, fertilizer mixtures, fertilization devices, etc., can solve the problems of secondary environmental pollution, secondary soil pollution, long phytoremediation cycle, etc., and achieve automatic control, simple production process, The effect of less space occupation
Pending Publication Date: 2020-01-10
湖南国农农业高科技有限责任公司
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The soil improver method has the advantages of small investment and quick results, but there is also the risk that the improver will cause secondary pollution to the soil and destroy the ecological balance of the soil itself
3. Phytoremediation method: Phytoremediation technology is an emerging soil remediation method in recent years. Using plants to remove heavy metal pollution in the soil, it is hoped to use super-accumulated plants to absorb heavy metal elements in the soil and purify the soil. Compared with the soil improver method, phytoremediation It has the advantages of safety, environmental protection and low investment, but the phytoremediation cycle is long, and it is difficult for re
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Embodiment 1
[0030] Rice cadmium-reducing and yield-increasing agent to treat rice fields polluted by complex polymetallic compounds.
[0031] A cadmium-reducing and yield-increasing agent for paddy rice that can be used to treat complex polymetallic comprehensive pollution of the present invention is prepared by mixing the following components uniformly:
[0032] β-cyclodextrin 18kg,
[0033] Zinc sulfate 18kg,
[0034] Manganese sulfate 20 and
[0035] Sodium diisopropyl dithiophosphate 44kg.
Embodiment 2
[0037] Treatment of paddy fields polluted by metallurgical wastewater.
[0038] A cadmium-reducing rice yield-increasing agent for paddy fields polluted by metallurgical wastewater according to the present invention is prepared by mixing the following components uniformly:
[0039] γ-cyclodextrin 28kg,
[0040] Manganese sulfate 20,
[0041] copper sulfate 28kg and
[0042] Sodium diisobutyl dithiophosphate 24kg.
Embodiment 3
[0044] Treatment of rice with soils containing high concentrations of cadmium.
[0045] A kind of treatment of the present invention that can be used for rice with high content of cadmium in the soil is prepared by mixing the following components evenly:
[0046] α, β, γ-mixed cyclodextrin 2kg,
[0047] Manganese sulfate 20,
[0048] Zinc sulfate 40,
[0049] copper sulfate 10kg and
[0050]Sodium Diamyl Dithiophosphate 28kg.
[0051] At the heading stage and filling stage of rice, the application rate is 200 grams per mu per mu, mixed with 40 kg of water and sprayed on the leaves, which can reduce the cadmium content of rice by 35-70%, increase the yield by 5-20%, and achieve the goal of reducing cadmium and increasing rice yield.
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Abstract
The invention discloses a rice cadmium-reducing and yield-increasing agent. The rice cadmium-reducing and yield-increasing agent is mainly produced by mixing the following components: a component A which is one of or a composition of any two of cyclodextrin and derivatives of the cyclodextrin, a component B which is one of or a composition of any two of zinc sulfate, manganese sulfate, ferrous sulfate and copper sulfate, and a component C which is one of or a composition of any two of dialkyl dithiophosphates; and the mass fractions of the component A, the component B and the component C in the rice cadmium-reducing and yield-increasing agent are 1%-90%, 1%-90% and 1%-98% correspondingly. The invention further provides a production method of the rice cadmium-reducing and yield-increasing agent. The rice cadmium-reducing and yield-increasing agent is small in using amount, treatment is rapid, easy, convenient and not limited by the site, the concentration and the like, long-distance automatic spraying control by an unmanned aircraft can be further achieved, and the rice cadmium-reducing and yield-increasing agent is especially suitable for cadmium-standard-exceeding treatment of rice and emergency treatment of complex heavy metal pollution accidents in case of emergencies and has good application prospects.
Description
technical field [0001] The invention belongs to the technical field of agricultural environmental protection and restoration, and more specifically relates to a cadmium-reducing agent for increasing rice production, and also relates to a preparation method of a micro-fertilizer for reducing cadmium content in paddy fields with excessive cadmium, which is suitable for heavy metal-polluted areas Especially rice production in cadmium polluted areas. Background technique [0002] Cadmium ions in soil are the main source of cadmium in rice. Cadmium pollution is an important factor threatening rice safety. With the expansion of the scale of mining and smelting industries, the area of soil pollution in my country is gradually expanding, and the degree of pollution is gradually increasing. In 2010, the area of land polluted by heavy metals such as cadmium, arsenic, chromium, and lead in my country was nearly 20 million hectares, accounting for about one-fifth of the total cult...
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