A water optimization method for precise irrigation of winter wheat

A technology for precise irrigation and winter wheat, applied in the directions of botanical equipment and methods, applications, watering devices, etc., can solve problems such as increasing costs, violating water-saving irrigation, and wasting water.

Active Publication Date: 2021-04-20
HENAN PROVINCIAL WATER CONSERVANCY RES INST
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Problems solved by technology

For a long time, people have paid too much attention to the possibility of surface irrigation and the designed irrigation quota is generally too large, often the actual irrigation volume is larger, and the irrigation quota increases, which is not beneficial to agricultural production, but also wastes water, increases costs, and violates the law. requirements for water-saving irrigation

Method used

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  • A water optimization method for precise irrigation of winter wheat
  • A water optimization method for precise irrigation of winter wheat
  • A water optimization method for precise irrigation of winter wheat

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Embodiment Construction

[0026] The specific embodiment of the present invention sees figure 1 :

[0027] Following the principle of convenient production and management, the growth period of winter wheat is divided into seedling stage, jointing stage, heading stage and filling stage; the planned wetted layer depth of each growing stage of winter wheat is determined. It is generally believed that the planned wetted layer depth before and after jointing is 60cm and 100cm respectively The normal growth and development of winter wheat can be guaranteed at the same time; the irrigation quota and the lower limit of soil moisture control are the main irrigation indicators, following the principles of science and operability, through years of experiments, it is found that the maximum yield reduction rate of winter wheat and the maximum variation of water consumption under water stress The annual and quarterly averages are about 44.92% and 36.80% respectively.

[0028] Among them, the impact of water deficit...

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Abstract

The invention discloses a winter wheat precision irrigation water optimization method, through continuous monitoring of the soil moisture in the planned wet layer of the winter wheat growth period, with the determined irrigation quota and soil moisture control lower limit as the main irrigation indicators. When the soil moisture is higher than the lower limit of moisture control, no irrigation is required; when the soil moisture is lower than the lower limit of moisture control, combined with the weather conditions determined by the weather forecast at that time and in the next few days, and according to the condition of winter wheat seedlings and growth conditions, comprehensively judge whether to Needs irrigation. If it is determined that irrigation is not necessary, the irrigation time will be postponed; if it is determined that irrigation is necessary, irrigation will be implemented according to the established irrigation quota. The method is helpful to suppress the waste of agricultural water resources and the overexploitation of groundwater, and improve the utilization rate of regional irrigation water.

Description

technical field [0001] The invention relates to the technical field of water-saving irrigation, in particular to a water optimization method for precise irrigation of winter wheat. Background technique [0002] Surface irrigation is a common irrigation method in winter wheat production in semi-humid and semi-arid areas in my country. It has the advantages of labor saving, low consumption, and easy implementation. Although the application of water-saving irrigation methods such as micro-irrigation and sprinkler irrigation has great advantages in improving the utilization rate of irrigation water and irrigation water quality, the high construction and installation costs and continuous investment in maintenance costs are not suitable for winter wheat producers who gain economic benefits by harvesting grains. In other words, choosing more advanced water-saving irrigation methods such as micro-sprinkler irrigation means a further increase in production costs. On the contrary, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G22/20A01G25/16
CPCA01G25/167A01G22/20
Inventor 路振广邱新强王敏秦海霞和刚张玉顺魏雅琴王艳平孙彬杨小恒徐争李自胜逯林方赵源钊郭蓉蓉
Owner HENAN PROVINCIAL WATER CONSERVANCY RES INST
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