A water optimization method for precise irrigation of winter wheat

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...

AI Technical Summary

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

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