Nutrition modifier rich in selenium for lowering content of heavy metals in food crops and application thereof

A nutritional regulator and food crop technology, applied in the fields of agriculture and fertilizers, can solve the problems of high cost and unbearable for farmers, and achieve the effects of reducing Cd pollution, increasing selenium content, and reducing heavy metal pollution

Inactive Publication Date: 2014-05-21
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These technologies need to use a large amount of rare metals or iron fertilizers, and the cost is relatively high, which is difficult for farmers to bear in practical applications.

Method used

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  • Nutrition modifier rich in selenium for lowering content of heavy metals in food crops and application thereof
  • Nutrition modifier rich in selenium for lowering content of heavy metals in food crops and application thereof
  • Nutrition modifier rich in selenium for lowering content of heavy metals in food crops and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Example 1: The experiment of reducing the pollution of heavy metal Cd in the rice variety Zhefu by the selenium-enriched nutritional regulator that can reduce heavy metals in crops

[0014] 1. Test materials

[0015] The rice variety of the experimental site in Huangxing Town, Changsha is Zhefu, which was transplanted on April 14 and harvested on June 16. The soil type and chemical properties of Huangxing Town are pH4.90, organic matter 33.7g / kg, total nitrogen 2.06g / kg, alkaline nitrogen 223.0mg / kg, available phosphorus 4.2mg / kg, available potassium 82.0mg / kg, total cadmium 9.02mg / kg, total lead 41.1mg / kg, total arsenic 13.3mg / kg, total chromium 81.8mg / kg, total mercury 0.06mg / kg.

[0016] 2. Specific experimental design

[0017] Adopt field plot experiment, treat 6 plots in parallel, each plot area is 6m×6m=36m 2 , the base fertilizer is compound fertilizer (NPK15-15-15) 60kg / mu, and the top dressing is urea (12kg / mu). Field management measures are in accordance ...

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Abstract

The invention discloses a novel nutrition modifier rich in selenium for lowering content of heavy metals in food crops and development thereof. By combining the method of spraying straw fermentation liquid rich in selenium onto the leave surface with the method of spraying chitosan aqueous solution onto the leave surface, the system of the crop absorbing and transferring mineral metals is improved through the offered organic polymer with the heavy metal complexing capacity, the food crop is further inhibited from absorbing and using the heavy metals, the enrichment of divalent heavy metals in the crop is lowered, the content of heavy metals in the crop is lowered, organic selenium is offered, the crop is improved in the capacity of absorbing and using nutrient element selenium, and the quality of rice is improved.

Description

technical field [0001] The invention relates to the field of agricultural technology, in particular to the field of fertilizers, in particular to a novel selenium-enriched nutritional regulator for reducing the heavy metal content of food crops and its application. Background technique [0002] Hunan, Jiangxi, Guangxi and other provinces with rich mineral resources are also important grain production bases in the country. In recent years, with the massive development of the mining industry, excessive discharge of industrial "three wastes", poor treatment of solid waste, and agricultural use of industrial waste, the content of heavy metals such as arsenic, lead, cadmium, and mercury in the soil has increased sharply. Since heavy metals are similar to the essential trace elements of crops that belong to divalent iron and molybdenum, they are easier to migrate into crops through the soil-rice system and enrich in agricultural products, which not only affects the yield of crops ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00A01C21/00
Inventor 刘选明童春义刘斌唐冬英
Owner HUNAN UNIV
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