Wheat leaf surface blocking and controlling agent for blocking atmospheric dust fall lead pollution and use method thereof

Abstract

The invention discloses a wheat leaf surface blocking and controlling agent for blocking atmospheric dust fall lead pollution and a use method thereof, and belongs to the technical field of environmental pollution abatement, the wheat leaf surface blocking and controlling agent is prepared from the following raw materials by mass: 3-5% of humic acid, 0.5% of Fe3O4-coated C-COOH hollow microspheres, 1-2% of alkyl naphthalene sulfonate, 0.5-1% of lambda-cyhalothrin, and 91.5-95% of water; the leaf surface blocking and controlling agent is sprayed on wheat leaves in the grain filling stage of wheat, the wheat leaves can be efficiently and remarkably prevented from absorbing heavy metal Pb in atmospheric dust fall, the lead content in wheat grains is further reduced, meanwhile, the leaf surface blocking and controlling agent has the advantages of being small in application frequency and application amount, preventing and controlling wheat diseases and insect pests and improving the crop yield, and a new solution is provided for controlling the lead pollution problem of lead in atmospheric dust fall to wheat grains.

Description

technical field [0001] The invention belongs to the technical field of environmental pollution control, and in particular relates to a wheat leaf surface inhibitor and control agent for blocking atmospheric dust and lead pollution and a use method thereof. Background technique [0002] Wheat is the third largest food crop in the world after rice and corn, and it is the main dietary component of Chinese residents and the main source of human energy. With the development of industrialization and the construction and operation of a large number of industrial plants such as smelters and power plants, the content of lead (Pb) in atmospheric deposition is much higher than the background value of soil. Soil is the final destination of atmospheric dustfall. Atmospheric dustfall has become one of the important input channels for soil heavy metals. Among them, Pb is more common in soil pollution, and it is also the heavy metal with the highest accumulation rate in soil. Both soil and...

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Problems solved by technology

However, the retrieved technologies and literature records mainly focus on the absorption of Pb in the soil by wheat roots and ignore the absorption of Pb in atmospheric dust by leaves. The prevention and control technologies and related products for wheat grain Pb pollution still focus on the prevention and control of Pb in soil. The impact of pollution on wheat, even the existing leaf heavy metal inhibitors start from spraying related elements, enter the crop body, and chelate the heavy metals absorbed by the roots, thereby reducing the transfer of heavy metals to edible parts such as seeds , but did not take into account the impact of the two pollution sources of atmospheric dust and soil on wheat grains, especially the reality that Pb in wheat grains mainly comes from atmospheric dustfall, and there is still a lack of targeted control methods and inhibitor products, resulting in wheat The Pb content in grains often exceeds the standard, and the prevention and control effect of Pb pollution in grains is unstable, low in efficiency and high in cost, which has become the bottleneck of scientific prevention and control of Pb pollution in wheat grains

[0005] Therefore, the control technology of atmospheric dust on wheat leaves and grains Pb pollution is still blank, and it is necessary to develop foliar inhibitors that directly block wheat leaves from absorbing Pb in atmospheric dust, thereby reducing the Pb content in grains

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