Water-saving Irrigation Method of Near-root Reinfiltration Irrigation

Abstract

The invention discloses a water-saving near-root reverse-seepage irrigation method. According to the method, water seepage pipes (5) with water seepage holes are connected with a water source at a high position, the water seepage pipes (5) are buried under the ground and below root systems (7) of crops (1), and mulching films are laid below the water seepage pipes (5); the water source is 0.5-1m above the ground; the water seepage pipes are slightly inclined, so that water inlet ends are slightly higher than water outlet ends; hole-free sections of 1-10cm are required to be reserved at tail ends of the water seepage pipes, and when the water seepage pipes are buried, the hole-free sections and port plugs are required to be exposed out of covering soil; when the water seepage pipes (5) are buried, a layer of sandy soil (6) with coarse particles is buried above the water seepage pipes (5). According to the method, 50-70% of water can be saved, and the yield per unit area can be improved by 25-30%; compared with sprinkling irrigation methods, the method has the advantages that 10-20% of the water can be saved and the yield per unit area can be improved by 10-15%.

Description

technical field [0001] The invention relates to the technical field of agriculture, and in particular to an irrigation method—a water-saving irrigation method for near-root reinfiltration irrigation. Background technique [0002] In the vast arid agricultural areas in northern my country, irrigation is an indispensable part of agricultural production due to the small amount of atmospheric precipitation. However, flood irrigation is still used in many places to irrigate the fields. First, it wastes water resources greatly. Second, it causes the groundwater table to rise continuously, causing secondary salinization of a large area of ​​cultivated land. Third, due to excessive irrigation, it will It produces a series of negative effects such as soil nutrient loss and porosity reduction, short-term "shock" of crops, and cessation of growth. If this irrigation method does not change, over time, water resources will be exhausted, more farmland will be salinized, and fertile farml...

AI Technical Summary

Problems solved by technology

However, flood irrigation is still used in many places to irrigate the fields. First, it wastes water resources greatly. Second, it causes the groundwater table to rise continuously, causing secondary salinization of a large area of ​​cultivated land. Third, due to excessive irrigation, it will Produce a series of negative effects such as soil nutrient loss and porosity reduction, short-term "shock" of crops, and cessation of growth

If this irrigation method does not change, over time, water resources will be exhausted, more farmland will be salinized, and fertile farmland will become more and more barren due to the loss of nutrients

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