An irrigation optimization method for small electromechanical rice irrigation areas based on precipitation forecast
An optimization method and technology for irrigated areas, applied in the fields of botanical equipment and methods, forecasting, watering devices, etc., can solve the problems of not considering the impact of natural precipitation, waste of water resources, etc., and achieve easy popularization and application, reduce water demand, and save irrigation. effect of water
Active Publication Date: 2021-05-18
YANGZHOU UNIV
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In the past, the impact of natural precipitation on rice irrigation was not considered in the paddy irrigation plan, so a lot of water resources may be wasted
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0062] Below in conjunction with accompanying drawing and the irrigation plan practice of a certain small-scale electromechanical paddy irrigation area in eastern my country, the contents of the present invention are further described:
[0063] (1) Determine the irrigation coefficient:
[0064] a. This irrigation plan is formulated for a small-scale electromechanical rice irrigation area in a plain in the east of the south of the Yangtze River in my country. The irrigation start time is July 7th, which is the tillering stage of rice growth;
[0065] b. According to the above information, it is determined that the irrigation method of the irrigation area is shallow wet irrigation, and the upper limit of the suitable water layer for irrigation is h max =20mm, the lower limit of the suitable water layer h min =0.0mm, the lower limit of soil moisture content θ min =0.45, soil dry bulk density Field seepage DP=2.2mm / d and water surface evaporation Z=5.96mm / d and α=1.04 value, f...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses an irrigation optimization method for a small electromechanical rice irrigation area based on precipitation forecasting, comprising the following steps: (1) determining parameters required for irrigation according to the rice growth period, irrigation mode, irrigation start time and location of the irrigation area; (2) Determine the water layer depth of the paddy field in the irrigated area one day before irrigation; (3) determine the duration of one irrigation d days (d is less than or equal to 3); (4) collect the precipitation data of the irrigated area in the same time period in the past n years (n greater than or equal to 15), Determine the average daily precipitation in previous years and its 95% confidence interval; (5) Obtain the precipitation forecast data of the irrigated area during the irrigation period, and determine the forecast daily average precipitation during the irrigation period; (6) Determine the credible daily average precipitation during the irrigation period (7) According to the depth of the water layer on the day before irrigation and the credible daily average precipitation, calculate the change of the water layer depth in the paddy fields in the irrigation area during the irrigation period; (8) Complete the irrigation according to the irrigation requirements. The invention can optimize and reduce irrigation water and improve water resource utilization efficiency.
Description
technical field [0001] The invention relates to an irrigation optimization method for a small electromechanical rice irrigation area based on precipitation forecast, belonging to the field of agricultural water and soil engineering. Background technique [0002] The total amount of water resources in my country is abundant, but the per capita water resources are very small, and the uneven distribution of water resources in regions and seasons has exacerbated the difficulty of regional water use. Among the many water-based industries, agricultural rice planting irrigation is one of the industries that consume the most water resources. However, since rice planting is related to the basic needs of national food security, the irrigation demand for rice planting must be guaranteed. The impact of natural precipitation on rice irrigation was not considered in previous rice irrigation plans, which may cause a lot of waste of water resources. If we can make full use of natural preci...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): A01G25/00G06Q10/04G06Q50/06G06F17/18
CPCA01G25/00G06F17/18G06Q10/04G06Q50/06
Inventor 程吉林沈依晨汪靓陈兴蒋晓红袁承斌
Owner YANGZHOU UNIV