Agriculture water and soil improvement irrigation and drainage system

Abstract

The invention relates to an agriculture water and soil improvement irrigation and drainage system. The building process of the system is as follows: saline and alkaline land is leveled, pipe ditches are dug along the surface slope in the fields, the ditch slope is 0.5-5%, the ditch space is 10-30m, the ditch width is 10-60cm, the depth is 50-200cm, 5-10mm fine sand is paved on the bottoms of the ditches, the hard pipe diameter is 10-30cm, pipe bodies are punched, the hole diameter is 2-5mm, and gaps account for 2-10% of superficial areas of the pipe bodies; 2-5 layers of permeable geotextiles are used for covering the outer sides of the pipe bodies, hard pipes are placed in the ditches in which cushions are placed, one ends, located at the high terrain, of the hard pipes are 20-30cm higher than the ground, pipe heads are capped, sundries are prevented from entering the pipes, 10-30cm of the 5-10mm fine sand is filled in the hard pipes paved in the ditches, pipe bores are prevented from being blocked, and the ditches are filled, leveled up and compacted by using soil. By using the drainage system, the drainage efficiency is high, the desalting efficiency is obviously improved, the controllability of the technology is enhanced, a trickle irrigation localized irrigation technique is fully exerted, water can be greatly saved, the floor area of the drainage system is reduced, and the desalting efficiency is improved.

Description

technical field [0001] The invention relates to the field of agricultural water conservancy engineering, in particular to an irrigation and drainage system for agricultural water and soil improvement. Background technique [0002] Xinjiang is the province with the largest salinized soil area and the most types of salt composition in my country, and is known as the "World Museum of Saline-Alkali Soil". The total area of ​​saline-alkali soil in Xinjiang accounts for 22% of the national saline-alkali soil area. Among the existing cultivated lands, the area affected by different degrees of salinization accounts for 30% of the total cultivated land area, and 63% of the low-yield field area. Among them, the low-yield field threatened by moderate and severe salinization accounts for 22% of the total cultivated land area. [0003] In the arid area of ​​Xinjiang, drip irrigation technology and plastic film mulching technology were organically combined to form under-mulch drip irriga...

AI Technical Summary

Problems solved by technology

This type of drainage can effectively remove the salinity and alkalinity of the soil, but it has many disadvantages. First, this technology will cause a large amount of ground evaporation and deep seepage, which will waste a lot of water resources. It is not suitable for arid areas in Xinjiang. It must be carried out before sowing in spring or after harvesting in autumn. The former may affect spring plowing, and the latter has the risk of salt return in winter

As far as the open ditch drainage system and the concealed pipe drainage system are concerned, the open ditch drainage system generally has the problems of slope collapse and ditch bottom deposition