Silt step-by-step regulation and control method of drip irrigation system

A sedimentation and sedimentation technology, applied in chemical instruments and methods, botanical equipment and methods, water/sewage multi-stage treatment, etc., can solve problems such as drip irrigation with high sediment content

Active Publication Date: 2016-11-09
CHINA AGRI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the defects existing in the prior art, the object of the present invention is to provide a step-by-step control method for sediment in the drip irrigation system, which includes sedimentation in the sedimentation tank, sand retenti

Method used

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  • Silt step-by-step regulation and control method of drip irrigation system
  • Silt step-by-step regulation and control method of drip irrigation system

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Embodiment

[0050] Example: The water source comes from the Wushen Main Canal in Dengkou County, Bayannaoer City, Inner Mongolia, with an annual average sediment concentration of 2.6kg / m 3 , particle size distribution such as figure 2 shown. The crops planted in this area are mainly sunflower, 3-year wolfberry and 5-year alfalfa.

[0051] According to the silt step-by-step control method of the drip irrigation system proposed by the present invention, the specific implementation process is as follows:

[0052] (1) sand sinking tank

[0053] Irrigation water enters the sedimentation tank for sedimentation. The gravity-type sedimentation and filtration composite system is used as the prototype, and inclined pipes and screens are arranged to maximize the efficiency of sedimentation. Among them, the number of screens is 150 meshes, through the rhombus, square, and honeycomb inclined tubes, the lengths are 80cm, 100cm, and 120cm, and the angles between the inclined tubes and the water flow...

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Abstract

The invention relates to a silt step-by-step regulation and control method of a drip irrigation system. The method comprises four stages of desilting by a desilting basin, silt blocking by a filter, silt flushing by a drip line and silt discharging by a drip emitter. The regulation and control stages are effectively linked, and the problem of high silt concentration by drip irrigation is solved efficiently and at low cost. According to the method, 75% irrigation uniformity of the drip irrigation system is the final control standard, and a step-by-step regulation and control method of crops with different growth years and control threshold range of the regulation and control stages are put forward. On this basis, model selection of regulation and control equipment in each stage, setting of structure and selection of operating parameter are achieved.

Description

technical field [0001] The invention relates to a step-by-step control method for sediment in a drip irrigation system, belonging to the technical field of high-efficiency water-saving irrigation in agriculture. Background technique [0002] At present, the distribution of water resources and cultivated land resources in my country is extremely unbalanced, and the shortage of water resources is becoming more and more serious. The use of water sources with high surface sand content for irrigation has become a hot application point. Drip irrigation is currently the most water-saving precision irrigation technology, and the development of drip irrigation in water-scarce irrigation areas is expected to be an effective way to alleviate water shortages. The emitter (mainly referring to dripper, drip irrigation pipe and drip irrigation belt) is the most critical part of the drip irrigation system, but the flow path of the emitter is narrow, and impurities such as particulate matter...

Claims

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Application Information

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IPC IPC(8): C02F9/02A01G25/00
CPCA01G25/00C02F1/001C02F9/00C02F2001/007C02F2301/08C02F2303/24Y02A40/22
Inventor 李云开冯吉吴乃阳李玮珊韩思齐
Owner CHINA AGRI UNIV
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