"Double S-type" drainage and salt control pipeline integrated isolation pad and method in saline-alkali land

Abstract

The invention relates to an integrated isolation pad and method for "double S-type" drainage and salt control pipelines in saline-alkali land. The isolation pad includes an upper layer pad and a lower layer pad, and matrix-distributed equal-height support rods and double S pipes are arranged between the upper layer pad and the lower layer pad. . The method is that the remaining water from irrigation is collected on the upper pad, and then enters the water inlet pipe along the water inlet hole of the isolation pad. When the deep seepage is small, a small amount of water will be stored in the primary water storage elbow. When the leakage is large, the water in the primary water storage elbow will be full, and the water will enter the one-way flow pipe along the primary connecting pipe, collect in the secondary water storage elbow, and collect into the drain pipe. Then it flows into the main drainage pipe; when the groundwater level is high, when the groundwater reaches the underlying pad, the water will flow from the secondary water storage elbow to the drainage pipe, and then collect into the main drainage pipe. The water in the main drainage pipe will lead to the ground and be pumped Pumping and drainage; the invention solves the problem that the common surface water and salt environment in arid areas is difficult to control.

Description

technical field [0001] The invention relates to an integrated isolation pad and a method for a "double S-shaped" drainage and salt control pipeline in saline-alkali land, belonging to the technical field of farmland water conservancy engineering. Background technique [0002] In the arid regions of my country, due to natural factors such as water shortage and strong evaporation, soil moisture moves upwards with evaporation and accumulates to the soil surface along with the continuous upward movement of soil salinity. Controlling soil water evaporation is of great significance for controlling the accumulation of salt on the soil surface, preventing soil salinization, and ensuring the sustainable and stable yield of crops. In my country's modern agricultural production, the method of soil layer isolation is often used to control the movement process of soil moisture. Common soil isolation measures mainly include straw isolation and biochar application. Straw isolation can in...

AI Technical Summary

Problems solved by technology

Straw isolation can inhibit soil water evaporation to a certain extent, but in the long-term use, the straw decay process will easily cause the imbalance of surface soil carbon and nitrogen ratio, and the excessive or uneven amount of straw returned to the field will easily cause the risk of soil microorganisms competing with crop seedlings for nutrients, and even There are yellow seedlings, dead seedlings, and reduced production

As a new type of field isolation material that has emerged in recent years, biochar has been gradually promoted in northern my country, but its preparation process is complicated, and it is difficult for farmers to quickly master it.

In addition, the unreasonable application of biochar will cause changes in soil structure, resulting in immeasurable ecological problems

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