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Special corn BB fertilizer suitable for mild cadmium and lead combined polluted calcareous soil

A special technology for calcareous soil and corn, applied in the direction of alkaline orthophosphate fertilizer, application, nitrogen fertilizer, etc., to achieve the effect of reducing the concentration of cadmium and lead, simple processing technology and balanced nutrition

Active Publication Date: 2015-02-18
HEBEI AGRICULTURAL UNIV.
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  • Abstract
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AI Technical Summary

Problems solved by technology

For such a special soil environment, there is currently no agronomic technology or related fertilizer product that can not only ensure crop yield to satisfy farmers, but also reduce heavy metal content in agricultural products to meet national food safety standards

Method used

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Embodiment 1

[0014] Xiaowangting Village, Wangting Township, Qingyuan County, Baoding City has been using Fu River sewage for farmland irrigation since the 1960s. Fu River is the most polluted river in the southern branch of the Qing Dynasty. It mainly receives industrial wastewater and domestic sewage. Due to long-term sewage irrigation in this area, metals such as cadmium, lead, and arsenic have been enriched in farmland soil. It is a mildly cadmium-polluted area or a mildly cadmium-lead compound polluted area, and the soil structure has deteriorated, and heavy metals appear in corn and wheat grains. It is urgent to use appropriate technology or products to restore heavy metal-contaminated soil, increase crop yields, and make agricultural products meet national food safety standards.

[0015] The soil used in this case is a fluvo-cinnamon soil with a texture of heavy loam, a pH value of 8.0, an organic matter content of 25.5 g / kg, an available phosphorus content of 28.2 mg / kg, an availabl...

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Abstract

The invention discloses a special corn BB fertilizer suitable for a mild cadmium and lead combined polluted calcareous soil, and belongs to the technical field of fertilizers. The special corn BB fertilizer is an organic-inorganic bulk blend fertilizer and comprises the following effective ingredients according to mass percentage: 15% of nitrogen, 6% of phosphorus pentoxide, 6% of potassium oxide, 33% of sulfate radical, and 4% of humic acid. The BB fertilizer is blended from granular ammonium sulfate, diammonium phosphate and a humic acid compound fertilizer according to a certain proportion, is suitable for the mild cadmium and lead combined polluted calcareous soil, effectively inhibits the absorption and the transport of heavy metals, such as cadmium and lead, of the corn, reduces the bio-availability of cadmium and lead in the soil, promotes the growth of the corn, and guarantees the quality of the corn.

Description

technical field [0001] The invention relates to the technical field of chemical fertilizers. Background technique [0002] In recent years, the long-term accumulation of soil pollution problems has begun to emerge and is showing an increasing trend. In some areas, heavy metal pollution hazards in soil occur frequently, which poses a serious threat to the safety of agricultural products and human health, and has attracted great attention from the state and relevant departments. [0003] The remediation methods of soil heavy metal pollution include traditional physical and chemical methods, such as guest soil method, soil leaching, thermal desorption method, modifier method, electrokinetic remediation method, etc. The remediation principle is to reduce The concentration of heavy metal ions in the soil may change the form of heavy metals in the soil, thereby reducing their mobility and bioavailability in the soil. The disadvantages of these methods are that the scope of repair...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F3/04
CPCC05B7/00C05G3/80C05B17/00C05C3/00C05D1/00C05F11/02Y02A40/20
Inventor 刘文菊薛培英孙洪欣赵全利耿丽平杨阳郑坤孙宇
Owner HEBEI AGRICULTURAL UNIV.
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