Method for transforming desert soil by simulating natural geological process of salt and alkali occurrence in arid region

Abstract

The invention relates to a method for transforming desert soil by simulating a natural geological process of salt and alkali occurrence in an arid region, which comprises the following steps: building a high-level reservoir in an oasis-desert transition zone, and artificially introducing ecological water to form a fresh water tower water head; building a gentle slope land according to the terrain, doping sand, and applying organic fertilizer heavily to improve plough layer soil; dividing boundary lines suitable for farmland and saline soil according to the critical depth and gradient of diving salt return, and improving the soil by utilizing ridge culture, drip irrigation under plastic film and halophyte sections; building alkali discharge ditches, digging salt discharge pits, and driving soil water and salt to be collected to a slope bottom containing and discharging area; configuring the halophyte wind prevention and sand fixation forest reasonably, reducing salt, improving soil, recovering vegetation, and maintaining the biological diversity of the system. A rural area-periodic salt return saline-soil area-dry salt discharge capacity discharge area zoning system is constructed; demonstration is provided for creating sustainable cultivated land and rebuilding an oasis wind prevention and sand fixation ecological barrier for the extreme arid area. The production and ecological problems of land salt returning and ploughing discarding after south moving and reclamation of Xinjiang weapon groups, natural oasis degeneration, sandstorm, sand blowing and floating dust weather harms seriously are solved.

Description

technical field [0001] The invention belongs to the field of planting improvement of saline-alkali soil in arid areas, and in particular relates to a method for transforming desert soil into a suitable farmland and oasis ecological barrier restoration area. Background technique [0002] The Xinjiang Corps moved southward, and at the same time as the population was relocated, it was necessary to reclaim saline-alkali wasteland, increase land to develop the economy, and stabilize the population. However, part of the newly reclaimed land was forced to be abandoned due to serious salt return. The technicians with production experience in northern Xinjiang, with years of successful experience in land reclamation in Shihezi Regiment, could not solve the problem of saline soil in southern Xinjiang. Field investigations found that due to the scarcity of water resources in southern Xinjiang compared with northern Xinjiang, most of the newly reclaimed land is around reservoirs with go...

AI Technical Summary

Problems solved by technology

The characteristics of river runoff in southern Xinjiang are: the flood season is late, the summer water is concentrated, and the winter water is relatively large. During the rest period, a large amount of ecological water flows into the desert discharge area outside the oasis area and the desert ecological area downstream of the river's old course, which makes the runoff in the arid area naturally exhausted and lost. , this inefficient and disorderly management results in low and monotonous vegetation coverage, which is not conducive to biodiversity

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