Wheat grain lead control agent as well as preparation method and application method thereof

Abstract

The invention provides a wheat grain lead control agent as well as a preparation method and application method thereof. The wheat grain lead control agent is prepared from an agent A, an agent B and an agent C. The agent A is prepared from 6-7% of calcium phosphate, 3-4% of Fe3O4@C-COOH, 0.1-0.3% of nano manganese sulfate, 0.1-0.3% of nano zinc sulfate, 0.1-0.3% of nano magnesium sulfate and the balance of urea. The agent B is prepared from the following raw materials of: 0.5-1.5% of nano magnesium sulfate, 2-4% of humic acid, 0.5-1% of Fe3O4@C-COOH, 0.5-1.5% of alkyl naphthalene sulfonate and the balance of water. The agent C is prepared from the following raw materials of: 0.2-0.4% of nano manganese sulfate, 0.2-0.4% of nano zinc sulfate, 2-4% of humic acid, 0.1-0.3% of Fe3O4@C-COOH, 0.5-1.5% of alkyl naphthalene sulfonate and the balance of water. The invention also provides an application method of the lead control agent. The method comprises the following steps that: S1: after wheat turns green, the agent A is applied into wheat soil; S2, after the wheat sprouts out stems, the agent B is sprayed to wheat leaves; and S3, after the wheat is under grain filling, the agent C is sprayed onto the wheat leaves. The lead control agent and the application method provided by the invention can be used for atmosphere-soil two-end synergistic lead control on the wheat, and are harmless to the environment and human bodies.

Description

technical field

[0001] The invention belongs to the technical field of environmental pollution control, and in particular relates to a wheat grain lead control agent and a preparation and application method thereof. Background technique

[0002] With the rapid advancement of industrialization and urbanization, the phenomenon of heavy metal pollution in food has become increasingly prominent. Once heavy metals enter crops, they will endanger human health through the food chain. The pollution phenomenon of lead in wheat is relatively common, and it is the heavy metal element with the highest accumulation rate in soil. Wheat is the third largest food crop in the world after rice and corn. It is the main dietary component of Chinese residents and is also considered to be one of the main sources of human lead intake. Therefore, it is particularly important to scientifically prevent and control lead pollution in wheat and ensure food hygiene quality and safety. The current resea...

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