Variable-position water manure supply type underground infiltrating irrigation device

Abstract

The invention belongs to an infiltrating irrigation device, and particularly relates to a variable-position water manure supply type underground infiltrating irrigation device. The device comprises a water tank of which two ends are blind ends and the cross section is U-shaped; the water tank is embedded under the earth surface; growing tanks with a V-shaped cross section are axially distributed in the water tank; through cavities are formed between the left side of the water tank and the strip growing tank as well as between the right side of the water tank and the strip growing tank; the water tank and the growing tank are made from a waterproof material; the growing tank is provided with at least two rows of water seepage holes which are formed at longitudinal intervals and extend at intervals in the axial direction; water level sensors are assembled at the end part of the growing tank horizontally corresponding to the water seepage holes; and each water level sensor is electrically connected with an external acousto-optical alarm device or an external control device. According to the device, the problems of high cost, complicated installation and the like in the prior art are solved. The device provided by the invention has the advantages of being relatively low in cost, simple in installation and the like, and is suitable for the cultivation of shallow-root vegetables.

Description

technical field [0001] The invention belongs to a seepage irrigation device, in particular to a displacement water and fertilizer supply type underground irrigation and seepage device. Background technique [0002] There is a shortage of water resources in northern my country, and the development of water-saving agriculture is the fundamental way to solve the shortage of water resources. In recent years, the vegetable planting area has expanded rapidly, but water-saving technology is backward, and most areas still use surface irrigation technology, which not only causes a lot of waste of water, but also causes nitrogen fertilizer leakage to pollute the soil; infiltration irrigation is the most economical water-saving technology in agriculture. The water irrigation method saves 60%-70% of water compared with ground irrigation, and can also reduce the humidity of the greenhouse under facility cultivation conditions to control the occurrence of diseases. In terms of research a...

AI Technical Summary

Problems solved by technology

But this technology has the following disadvantages: (1) Water seeps from the pipe to the surroundings and more to the lower part and less to the upper part. It is difficult for shallow root crops to use the water in the lower part. As long as there is water in the pipe, the water will continue to seep downward, which is not well controlled. deep leakage waste

(2) It is difficult to realize the "integration of water and fertilizer" technology

(3) Once the equipment is buried in the ground, the distribution of water in the soil cannot be changed, and it is difficult to meet the needs of sufficient moisture in the upper soil during the emergence of crops, and it is prone to incomplete and uneven emergence.

This technology has the following deficiencies: (1) It needs every 0.16-0.36 m 2 Set a seepage point, generally 0.25m on average 2 , and the water pipeline forms a network from the main pipeline to the capillary, the field construction is very complicated, and there are often seepage points that do not produce water

(2) Since the solid is artificially produced, due to the inhomogeneity of the sand itself and the variability of the operation process, it is difficult to achieve uniform water output between the seepage points

However, the water demand intensity of crops (water consumption per unit time) generally shows the regularity of less in the early stage, the most in the mid-term, and a decrease in the later period. Pressurization consumes power

(4) The price is expensive, and all the pipe networks in the field are more than 10,000 yuan per mu

This technology has the following deficiencies: (1) It needs to 2 Set up a seepage point, and its field water delivery is the same as that of the cover-shaped star-point seepage irrigation pipe network, which also has the problems of high cost and complicated installation; The need for water strength changes, and continuous pressurization consumes electricity

(3) A large number of small pieces of plastic film (20cm each 2 ) buried in the ground, it is difficult to clean up, and the problem of soil pollution is difficult to solve

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