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Intermittent combination and irrigation method for brackish water and freshwater in saline-alkali soil

A technology of brackish water and saline-alkali land, which is applied in the direction of soil preparation methods, botanical equipment and methods, watering devices, etc., can solve the problems of secondary salinization of soil, poor uniformity of irrigation, waste of fresh water resources, etc., and achieve the reduction of fresh water consumption , Moisture distribution is uniform, the effect of saving fresh water consumption

Inactive Publication Date: 2017-08-18
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] 1. Existing irrigation methods cause serious waste of fresh water resources;
[0006] 2. The existing irrigation method has poor irrigation uniformity and serious deep leakage;
[0007] 3. Existing irrigation methods can easily cause secondary salinization of soil
[0008] In summary, there are obviously inconveniences and defects in the actual application of the existing technology, so it is necessary to improve

Method used

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  • Intermittent combination and irrigation method for brackish water and freshwater in saline-alkali soil
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  • Intermittent combination and irrigation method for brackish water and freshwater in saline-alkali soil

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Embodiment Construction

[0043] The method of the invention aims at the problems of high soil salinity content, shallow groundwater level, poor water and fertilizer retention performance and secondary salinization of soil in irrigated areas caused by unreasonable irrigation in the saline-alkali land of the Lubei Plain, and provides a kind of brackish water and fresh water in saline-alkali land Intermittent combined irrigation method, this method is a water-saving and salt-suppressing irrigation method for saline-alkali land that integrates the functions of improving salinity, suppressing soil salinity, and water and fertilizer conservation. Using this method can make the soil salinity in the root zone of winter wheat-summer corn, the main crops in this area, increase. Effective inhibition, so that winter wheat-summer corn can absorb water and grow normally, so as to provide them with a good growth environment and achieve the best yield and quality.

[0044] In order to enable those skilled in the art t...

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Abstract

The invention discloses an intermittent combination and irrigation method for brackish water and freshwater in saline-alkali soil, pertaining to the technical field of irrigation. The method is mostly aimed at solving problems in the prior art such as serious waste of freshwater resources, low utilization rate, poor irrigation evenness and soil secondary saline-alkalization. The method comprises the following processing steps: field investigation; sampling of soil samples; sampling of water samples; analyses of soil samples; analyses of water samples; production and installation of test equipment. In terms of design of an experiment scheme, the experiment scheme comprises all freshwater direct irrigation, brackish water direct irrigation, brackish water and freshwater intermittent and combined irrigation. The brackish water and freshwater intermittent and combined irrigation comprises the combination sequence including the step of firstly irrigating brackish water and then freshwater and the step of firstly irrigating freshwater and then brackish water. The intermittent time include 0 min, 30 min, 60 min and 120 min. The intermittent combination and irrigation method for brackish water and freshwater in saline-alkali soil helps improve evenness of irrigation, reduce seepage of deep layers and improve saline-alkaline soil.

Description

technical field [0001] The invention belongs to the technical field of irrigation, and in particular relates to an intermittent combination irrigation method of brackish water and fresh water in saline-alkali land. Background technique [0002] The shortage of fresh water resources has become a prominent problem restricting the social and economic development of China, especially in the northern Shandong Plain. Finding alternative water (brackish water) is an important way to alleviate it. China has abundant underground brackish water resources, among which the underground brackish water (2-5g / l) and salt water (>5g / L) reserves in the Lubei Plain are abundant, and the mining volume is less than 10%. The average amount of underground brackish water and salt water resources is 1.202 billion m 3 , of which 2-3g / L is 112 million m 3 , 3-5g / L is 472 million m 3 , more than 5g / L is 618 million m 3 Therefore, the rational development and utilization of brackish water resourc...

Claims

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Application Information

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IPC IPC(8): A01G25/00A01B79/02
CPCA01B79/02A01G25/00Y02A40/22
Inventor 高佩玲刘小媛杨大明
Owner SHANDONG UNIV OF TECH
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