A water-soluble fertilizer that inhibits the absorption and enrichment of heavy metal cadmium in rice and its preparation method

Abstract

The invention discloses a water-soluble fertilizer for inhibiting absorption and enrichment of heavy metal cadmium of rice and a preparation method thereof. The water-soluble fertilizer is prepared from the following components in percentage by weight: 2 to 3 percent of glycine, 2 to 2.5 percent of alanine, 3 to 4 percent of composite sugar alcohol, 22 to 24 percent of monopotassium phosphate, 10 to 12 percent of EDTA-Zn, 6 to 8 percent of EDTA-Fe, 0.3 to 0.5 percent of EDTA-Mn, 0.2 to 0.3 percent of EDTA-Cu, 1 to 1.2 percent of disodium octaborate tetrahydrate, 0.8 to 1 percent of a chelating agent, 1.5 to 2 percent of a surfactant, 0.6 to 1 percent of a pH regulating agent and the balance of water. The water-soluble fertilizer for inhibiting the absorption and enrichment of the heavy metal cadmium of the rice can reduce absorption accumulation of the heavy metal cadmium of the rice, ensure the eating safety of the rice and improve the quality of the rice, and accelerate the production increment of the rice.

Description

technical field [0001] The invention relates to the technical field of agricultural fertilizers, in particular to a water-soluble fertilizer and a preparation method for inhibiting the absorption and enrichment of heavy metal cadmium in rice. Background technique [0002] As one of the five major food crops in the world, rice is seriously threatened by heavy metal pollution, and its safety production has attracted much attention. With the rapid development of industry and agriculture, the pollution of heavy metals in farmland in my country is becoming increasingly worrying, especially the pollution of heavy metal cadmium. Cadmium is easily absorbed by gramineous crops such as rice and enriches and accumulates in the grain, thus affecting the edible safety of the grain. According to survey statistics, the area of ​​cultivated land polluted by heavy metals in my country has reached 20 million hectares, accounting for 1 / 6 of the total cultivated land area in the country. On a...

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Problems solved by technology

The first measure is difficult to promote on a large scale due to the large amount of funds required for engineering restoration; the second measure is more destructive to the soil, and the necessary trace elements in the soil also precipitate, resulting in a lack of nutrients; the third spraying Foliar inhibitors often have a certain impact on the quality and yield of rice. Therefore, it is more practical to develop an environmentally friendly water-soluble fertilizer that can effectively inhibit the heavy metal cadmium.

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