阅读说明：本技术 一种水稻田地表水灌溉渠系优化节水方法 (Optimized water-saving method for surface water irrigation canal system of paddy field ) 是由 陈书强 薛菁芳 杜晓东 杨丽敏 赵海新 蔡永盛 周通 王翠 刘辉 王立楠 张献国 于 2020-05-06 设计创作，主要内容包括：本发明涉及水稻田节水技术领域,尤其涉及一种水稻田地表水灌溉渠系优化节水方法,包括以下步骤：S1、布置灌溉渠系：主干渠从水源地引出,主干渠沿着水稻田的走势从高到低设置,并且主干渠沿水稻田的长轴线贯穿整个稻田,主干渠连接支渠,支渠连接斗渠,斗渠连接水稻田进水口；S2、设置蓄水池：在主干渠中部附近设置蓄水池；S3、实施节水灌溉：通过主干渠引水对水稻田进行灌溉；本发明提供的一种水稻田地表水灌溉渠系优化节水方法,通过灌溉渠系优化设计,增设了蓄水池,并设置了液位传感器,可提高灌溉水利用率,更重要的是减少水分流失,减轻农业面源污染,维护农业可持续发展,经济效益和生态效益显著。(The invention relates to the technical field of paddy field water conservation, in particular to an optimized water conservation method for a paddy field surface water irrigation canal system, which comprises the following steps: s1, arranging irrigation canal systems: the main canal is led out from a water source, the main canal is arranged from high to low along the trend of the paddy field, penetrates through the whole paddy field along the long axis of the paddy field, is connected with a branch canal, the branch canal is connected with a canal, and the canal is connected with a water inlet of the paddy field; s2, setting a water storage tank: arranging a reservoir near the middle part of the main canal; s3, water-saving irrigation: irrigating the paddy field by leading water through the main trunk channel; according to the optimized water-saving method for the paddy field surface water irrigation canal system, the water storage tank is additionally arranged through the optimized design of the irrigation canal system, the liquid level sensor is arranged, the utilization rate of irrigation water can be improved, more importantly, the water loss is reduced, the agricultural non-point source pollution is reduced, the agricultural sustainable development is maintained, and the economic benefit and the ecological benefit are obvious.)

1. An optimized water-saving method for a paddy field surface water irrigation canal system is characterized by comprising the following steps:

s1, arranging irrigation canal systems: the main canal is led out from a water source, the main canal is arranged from high to low along the trend of the paddy field, penetrates through the whole paddy field along the long axis of the paddy field, is connected with a branch canal, the branch canal is connected with a canal, and the canal is connected with a water inlet of the paddy field; gates are arranged at the heads of the branch channel and the bucket channel, and a liquid level sensor is arranged at the tail of the bucket channel;

s2, setting a water storage tank: arranging a reservoir near the middle part of the main canal, wherein the inlet end of the reservoir is connected with a water outlet of a paddy field with higher topography, and the outlet end of the reservoir is connected with the middle part of the main canal;

s3, water-saving irrigation: irrigating the paddy field by leading water through the main trunk channel; the cistern is used for retrieving the drainage in the higher paddy field of relief, during the rainfall, collects the surface runoff in the higher paddy field of relief to the cistern, and the water in the cistern is used as the irrigation water in the lower paddy field of relief.

2. The method of claim 1, wherein valves are installed at both the inlet end of the reservoir and the outlet end of the reservoir.

3. The method of claim 1, wherein the gate at the head of the canal is closed when the depth of the water level in the canal is greater than 90% of the depth of the canal and the gate at the head of the canal is opened when the depth of the water level in the canal is less than 60% of the depth of the canal during the irrigation of the paddy field.

4. The method of claim 1, wherein the main canal is a pipe-type irrigation canal.

5. The method of claim 4, wherein the volume of the reservoir is 3-6 times the volume of the main trunk canal.

6. The method for optimizing water conservation in a paddy field surface water irrigation canal system as claimed in claim 1, wherein a liquid level sensor is installed inside the reservoir.

Technical Field

The invention relates to the technical field of paddy field water conservation, in particular to an optimized water conservation method for a paddy field surface water irrigation canal system.

Background

The rice is a grain crop with a wider planting area in China and is also a crop with the largest irrigation water demand. In the traditional planting process of rice, the traditional flooding irrigation and flood irrigation systems and the subsequent irrigation systems of thin, shallow, wet and sunshield are generally adopted, so that the water consumption is high.

The irrigation area of the surface water of rice in China accounts for 50% of the cultivation area of rice, one characteristic of the irrigation of the surface water is to utilize the topography of the terrain to irrigate, according to the local concrete condition, the length from the water source to the irrigation channel of the rice field is different, the irrigation channel is divided into trunk, branch, bucket, hair and agriculture according to its function, most irrigation projects of the northern area are water lifting irrigation, a plurality of water pumps are needed to lift water from the water source to the trunk channel at the same time, and then are redistributed to each sub channel, because the water delivery process is long, the water leaks in the irrigation channel, the irrigation water utilization rate of the irrigation channel is about 30-40% generally, because the irrigation water utilization rate is low, the irrigation cost is increased, meanwhile, the irrigation water causes certain pollution to the environment.

Therefore, we propose an optimized water-saving method for the surface water irrigation canal system of the rice field to solve the above problems.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides an optimized water-saving method for a paddy field surface water irrigation canal system.

An optimized water-saving method for a paddy field surface water irrigation canal system comprises the following steps:

s1, arranging irrigation canal systems: the main canal is led out from a water source, the main canal is arranged from high to low along the trend of the paddy field, penetrates through the whole paddy field along the long axis of the paddy field, is connected with a branch canal, the branch canal is connected with a canal, and the canal is connected with a water inlet of the paddy field; gates are arranged at the heads of the branch channel and the bucket channel, and a liquid level sensor is arranged at the tail of the bucket channel;

s2, setting a water storage tank: arranging a reservoir near the middle part of the main canal, wherein the inlet end of the reservoir is connected with a water outlet of a paddy field with higher topography, and the outlet end of the reservoir is connected with the middle part of the main canal;

s3, water-saving irrigation: irrigating the paddy field by leading water through the main trunk channel; the cistern is used for retrieving the drainage in the higher paddy field of relief, during the rainfall, collects the surface runoff in the higher paddy field of relief to the cistern, and the water in the cistern is used as the irrigation water in the lower paddy field of relief.

Preferably, the inlet end of the water reservoir and the outlet end of the water reservoir are provided with valves.

Preferably, during the irrigation of the paddy field, the gate of the head of the canal is closed when the depth of the water level in the canal is greater than 90% of the depth of the canal, and the gate of the head of the canal is opened when the depth of the water level in the canal is less than 60% of the depth of the canal.

Preferably, the main canal is a pipe irrigation canal.

Preferably, the volume of the water reservoir is 3 to 6 times of the volume of the whole main canal.

Preferably, a liquid level sensor is arranged inside the water reservoir.

The invention has the beneficial effects that: according to the optimized water-saving method for the paddy field surface water irrigation canal system, the water storage tank is additionally arranged through the optimized design of the irrigation canal system, the liquid level sensor is arranged, the utilization rate of irrigation water can be improved, more importantly, the water loss is reduced, the agricultural non-point source pollution is reduced, the agricultural sustainable development is maintained, and the economic benefit and the ecological benefit are obvious.

Detailed Description

The present invention will be further illustrated with reference to the following specific examples.

An optimized water-saving method for a paddy field surface water irrigation canal system comprises the following steps:

s1, arranging irrigation canal systems: the main canal is led out from a water source, the main canal is arranged from high to low along the trend of the paddy field, penetrates through the whole paddy field along the long axis of the paddy field, is connected with a branch canal, the branch canal is connected with a canal, and the canal is connected with a water inlet of the paddy field; gates are arranged at the heads of the branch channel and the bucket channel, and a liquid level sensor is arranged at the tail of the bucket channel;

s2, setting a water storage tank: arranging a reservoir near the middle part of the main canal, wherein the inlet end of the reservoir is connected with a water outlet of a paddy field with higher topography, and the outlet end of the reservoir is connected with the middle part of the main canal;

s3, water-saving irrigation: irrigating the paddy field by leading water through the main trunk channel; the cistern is used for retrieving the drainage in the higher paddy field of relief, during the rainfall, collects the surface runoff in the higher paddy field of relief to the cistern, and the water in the cistern is used as the irrigation water in the lower paddy field of relief.

Furthermore, valves are mounted at the inlet end of the water storage tank and the outlet end of the water storage tank.

Further, during the irrigation of the paddy field, the gate of the head of the bucket is closed when the depth of the water level in the bucket is greater than 90% of the depth of the bucket, and the gate of the head of the bucket is opened when the depth of the water level in the bucket is less than 60% of the depth of the bucket.

Furthermore, the main canal is a pipeline type irrigation canal which can reduce the evaporation of water.

Further, the volume of the water storage tank is 3-6 times of the volume of the whole main canal.

Further, a liquid level sensor is arranged inside the reservoir.

According to the optimized water-saving method for the paddy field surface water irrigation canal system, the water storage tank is additionally arranged through the optimized design of the irrigation canal system, the liquid level sensor is arranged, the utilization rate of irrigation water can be improved, more importantly, the water loss is reduced, the agricultural non-point source pollution is reduced, the agricultural sustainable development is maintained, and the economic benefit and the ecological benefit are obvious.

In the drainage process of the reservoir, an additional power source is not required to be improved, and energy can be effectively saved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.