Water-soluble fertilizer for inhibiting enrichment of heavy metal cadmium in rice

Abstract

The invention discloses a water-soluble fertilizer for inhibiting enrichment of heavy metal cadmium in rice and a preparation method. The water-soluble fertilizer includes, by weight, 1-5 parts of hydroquinone, 2-8 parts of sodium lignosulfonate, 5-15 parts of chitosan glutamate, 10-20 parts of biochemical fulvic acid liquid, 20-50 parts of fermented buckwheat hull powder, 14-35 parts of calcium superphosphate, 18-49 parts of urea, 11-32 parts of potassium dihydrogen phosphate, 1.2-5.4 parts of sodium molybdate, 2.3-6.5 parts of calcium formate, 3.2-8.4 parts of alkyl glycoside, 1.3-5.5 parts of ginkgoneolic acid, 0.5-1.5 parts of vitamin D, 0.5-1.5 parts of zinc oxide, 1-5 parts of composite biological bacteria, 2-29 parts of blast furnace slag powder, 0.6-1 part of a pH regulator and the balance of water. The water-soluble fertilizer for inhibiting absorption and enrichment of heavy metal cadmium in rice can reduce absorption and accumulation of heavy metal cadmium by rice, guarantee the edible safety of rice, improve the quality of rice and promote the yield increase of 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 in a large area because of 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 nutrient elements; 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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