Seawater backflow farmland soil salinization monitoring, evaluation and restoration improvement method

Abstract

The invention belongs to the technical field of soil conditioning, and discloses a method for monitoring, evaluating and repairing salinization of farmland soil with seawater flowing backwards, whichcomprises the following steps: monitoring the salinization of the farmland soil, and obtaining the change rule of the salinity of the farmland soil; constructing a soil salinization parameter inversion model based on multi-source satellite data, and dynamically monitoring the soil salinization; screening a soil conditioner suitable for backward flowing of seawater into the farmland; creating a seawater backflow farmland soil improvement technical mode, and cultivating conditions suitable for crop growth. Compared with a control mode, the mode of the organic fertilizer (200 kg / mu of Lvbaofeng and 300 kg / mu of refined coco coir), the soil conditioner (25 kg / mu of Taizhong Xingnong) and the crop formula fertilizer (40 kg / mu) has the advantages that the yield of crops can be increased by 22-38%; soil salinity is reduced by about 32.31%-55.21%Compared with a contrast mode, the mode of the organic fertilizer (200kg / mu of green Huizhou, 300kg / mu of refined coconut bran), the soil conditioner(25kg / mu of Taizhu agriculture) and the crop formula fertilizer (40kg / mu) has the advantage that the yield of crops can be increased by 22% to 22%. 38%, the soil salinity is reduced by about 32.31%-;55.21%.

Description

Technical field [0001] The invention belongs to the technical field of soil conditioning, and in particular relates to a method for monitoring, evaluating, repairing and improving the salinization of farmland soil by seawater inversion. Background technique [0002] At present, the closest existing technology: seawater intrusion refers to seawater reaching the land through the surface, and seawater intrusion refers to the seawater reaching the land through the ground. Seawater backflow is a common and increasingly serious problem in my country’s coastal areas. The cause of its formation mainly depends on the geological structure, rock density and water withdrawal. At present, due to seawater backflow, the soil in coastal areas has become severely salinized, and the composition of large areas of the soil has undergone serious changes, making crops unable to grow normally, which has caused a greater impact on agricultural production in coastal areas. At present, there is still no ...

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Problems solved by technology

[0003] To sum up, the problems existing in the existing technology are: there is still no complete plan to monitor, evaluate and improve seawater intrusion land, and there is no effective improvement method to restore the use of soil

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