Water-soil coupling test device for soft rock and sand combined farmland building

Abstract

The invention relates to a water-soil coupling test device for soft rock and sand combined farmland building. The device comprises first to eight test areas and an auxiliary device; the test areas are 15*12m in size and built through brick walls of which the top parts are aligned to the ground; an isolation zone being 1m in width or a biological protection zone being 2m in width is arranged between every two test areas; the first test area is the local original sandy soil; the second to eight test areas are divided into three test sub-areas, sandy soil fills in the bottom layer based on the thickness of 30cm, and soft rock and sand combined soil respectively fill in the surface layer according to the thickness of 30cm; the ratio of the soft rock to the sand in the soft rock and sand combined soil is 1: 1, 1: 2 and 1: 5; the first and second test areas are free of crops; potatoes are planted in the third, fifth and seven test areas; maize is planted in the fourth, sixth and eight test areas. According to the device, the complete test land prepared under a natural environment condition and corresponding auxiliary devices are adopted, so that the test result closest to the truth can be obtained.

Description

technical field [0001] The invention relates to a test facility for studying the coupling of water and soil under the conditions of different environmental parameter ratios in a newly formed soil field. Background technique [0002] Pisha sandstone, also known as "red clay", is widely distributed in the Mu Us sandy land. Once it is exposed, it will be weathered, it will be dusty when it meets the wind, it will loosen when it meets the water, and it will be lost in large quantities with the water, which is called "environmental cancer". The loose structure of sand, leakage of water and fertilizer, cannot form a soil aggregate structure, and it is also the "culprit" that leads to the ecological degradation of land resources. Based on the understanding of the characteristics of the two substances, the inventors proposed to use the complementarity of the physical composition of the "two evils" to combine the two into a new type of "soil", thus turning the two "harms" into one "...

AI Technical Summary

Problems solved by technology

However, this method requires a lot of manpower and material resources, and it is impossible to monitor the operation and management of local farmers in real time, which reduces the credibility of the test results.

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