Optimization method for precision irrigation water use of winter wheat

Abstract

The present invention discloses an optimization method for precise irrigation water use of winter wheat. Soil water content in a planed wet layer of the winter wheat in a growth period is continuouslymonitored to determine irrigation water quota and soil water content control lower limit as main irrigation water indexes. When the soil water content is higher than the water content control lower limit, no irrigation is needed; when the soil water content is lower than the water content control lower limit, weather conditions determined by weather forecast at the time and in the next few days are combined; and then according to the situations of winter wheat seedlings and growth, a comprehensive judgment is conducted to determine whether the irrigation is needed; if the irrigation is determined to be not needed, the irrigation time is postponed; and if the irrigation is determined to be needed, the irrigation is applied according to the determined irrigation quota. The method helps to suppress agricultural water resource waste and groundwater over-exploitation and improve the utilization of the irrigation water in the region.

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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