SU579966A1 - Rice-planting irrigation system - Google Patents

Description

i

This invention relates to agriculture, in particular: Land Reclamation.

The known irrigation system is B1cccine, and the rice maps, irrigation and COIpocHbie channels are open, and aipMMiposaHiHbie are structures for controlling the flow and water level of 1J.

However, the drainage network is open, it is overgrown, silted up, and the diversion lines and roads on both sides of the drain reduce the land use factor and create difficulties in carrying out agricultural work.

Closest to the invention in technical essence and the achieved result is a risO | Ba irrigation system, including open irrigation canals, a closed drainage network, collectors and construction, to regulate the flow and water level and fields of crop rotation 2.

The disadvantage of this system is the low drainage effect of closed horizontal drainage, which necessitates flow and surface discharges with hollow m and partial emptying of checks.

In order to increase water availability and increase the land use ratio, the proposed system has a drainage network.

2

made in the form of vertical drainage wells located in the middle of crop rotation fields and connected to irrigation canals. For diversion of drainage waters, irrigation canals „1Ы, connected with wells of vertical drainage, are connected with collectors.

FIG. 1 shows the proposed rice irrigation system, plan; in fig. 2 shows the drainage of water from a vertical drainage well into an irrigation canal.

The rice irrigation system includes a network of water supply channels - internal distribution distributor 1, second order distributor 2, open irrigation canals 3, constructions 4-7 for flow control and VALUE of water in checks, end discharge 8, collectors 9. Along distributors, collectors and rice cards on the opposite side of the irrigation canals arrange bulk roads 10. Depending on the terrain, rice cards are divided into checks by check

Rollers I. In the middle of the crop rotation field, a well is installed - vertical drainage 12 from pipelines 13 for diverting water to the irrigation canal and valve 14 to regulate the flow of water to the squall.

The system works as follows.

During the period of drying rice checks and lowering the level of groundwater, water drainage, water from the well 12, the pipeline 13 and the channel 3 go through the Zhongovskaya discharge 8 to the collectors 9. The well 12 is equipped with an electric pump. Full and partial emptying of checks is eliminated by filtering water through the soil with a vertical drainage well in operation, the active radius of which is 300 m.

The rice irrigation system creates favorable conditions for salt transfer from the root zone to the aeration zone: deep into the soil ground with subsequent removal of salts by drainage water.

The proposed system allows to adjust the water-air regime of the soil grounds of the aeration zone and the groundwater regime. The land use ratio is increased by 6.9%, water subsidence due to the use of drainage water for irrigation - by 20%, the increase in rice yield is 4.5 centners / ha.

Invention formula

Claims (2)

1. Rice irrigation system, including open irrigation canals, closed drainage network, collectors and facilities for controlling the flow and water level in the fields of crop rotation, in order to increase water availability and increase land use, the drainage network was completed in the form of wells of vertical drainage, located in the middle of the fields of crop rotation and connected to irrigation canals. 2. The system according to claim 1, with the use of irrigation canals connected to the wells of vertical drainage to drainage waters from the rice field to drainage waters from the rice field. Sources of information taken iBO attention in the examination 1. Zaitsev V. B. Risova irrigating system. M., “Kolos, 1968, p. 190-192. 2. USSR author's certificate JVb 371893, cl. A 01G 25/00, 1970. -n: .- /.  , -. FIG. 2