Salinized soil intercropping improvement system and planting method in deep water level heavy saline soil area

Abstract

The invention provides a salinized soil intercropping improvement system in a deep water level heavy saline soil area, which belongs to the technical field of saline-alkali field treatment, and includes a salt drainage ditch and a sump, the salt drainage ditch is connected to the sump, and filling is arranged in the salt drainage ditch A protective film is set above the salt drainage ditch. The protective film includes a first film and a second film. The two films form a hollow cavity with openings at both ends, and the cross-sectional area of ​​the middle part of the hollow cavity is greater than the cross-sectional area of ​​the openings at both ends; The hollow cavity is set with soil to form a salt drainage area. The salt drainage ditch divides the saline-alkali field into multiple salt-rich areas. The salt drainage area is planted with economic crops, and the salt-rich area is planted with salt-tolerant plants. The system can effectively reduce the salt concentration of the saline-alkali field, improve the economic benefits of the saline-alkali field, and use the water and nutrients collected in the sump to replenish the plants in the salt-rich area, so as to realize the full utilization of nutrients. Simultaneously using the above system, the present invention also provides a saline soil intercropping planting method in a deep water level heavy saline soil area.

Description

technical field [0001] The invention relates to the technical field of saline-alkali field treatment, in particular to a salinized soil intercropping improvement system and planting method in deep-water heavily saline soil areas. Background technique [0002] In today's society with a growing population, in order to meet the needs of human survival, human beings have fully developed arable land resources, and the further improvement of conventional arable land productivity is facing a bottleneck, which can no longer meet human needs. The improved utilization of saline-alkali fields and desertified land has important practical significance for increasing the land area and improving the agricultural productivity of cultivated land. [0003] In related technologies, biological improvement is a conventional method for improving saline-alkali fields, but limited by the range of biological physiology and ecology, it has little effect on the improvement of severely saline soil; Wi...

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Problems solved by technology

[0003] In related technologies, biological improvement is a conventional method for improving saline-alkali fields, but limited by the range of biological physiology and ecology, it has little effect on the improvement of severely saline soil; With the maturity of alkali technology, the improvement of saline-alkali fields has achieved remarkable results, but the above-mentioned salinity-alkali drainage technology is mainly aimed at the improvement of mild, moderate, micro-severe and severe saline-alkali fields. The improvement effect of degraded saline-alkali fields is small

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