Variable irrigation and fertilization zoning method for large sprinkler

Abstract

The invention discloses a variable irrigation and fertilization zoning method for a large sprinkler, and belongs to the technical field of agricultural irrigation and fertilization. A soil or crop information point data set with a coordinate system is processed, an inverse distance weighting method is adopted, conversion from point data to surface data is completed, and a base map needed by management area division is generated; grading and classifying are carried out by adopting a natural discontinuity point method, and irrigation and fertilization grades are divided; a plurality of large management areas and small management areas are generated according to a classification result and parameters of a large sprinkler unit; and finally an irrigation and fertilization prescription map is generated. According to the method, the management areas can be accurately divided according to real-time conditions of soil and crops and information of the large sprinkler unit, then variable irrigation and fertilization are carried out, water and fertilizer resources can be saved, the sprinkling irrigation water and fertilizer utilization efficiency and the mechanization degree are improved, fixed-point quantitative irrigation and fertilization are achieved, and help is provided for development of precision agriculture.

Description

technical field [0001] The invention belongs to the technical field of agricultural irrigation and fertilization, and in particular relates to a large-scale sprinkler irrigation variable irrigation and fertilization zoning method. Background technique [0002] With the continuous development of intensification and scale of agricultural production in our country, a unified planting management method is often adopted in the farmland scale. However, there are large differences in soil physical properties and real-time crop growth conditions in large-scale farmlands. If uniform irrigation and fertilization is still used, it will cause excessive or insufficient irrigation and fertilization in local plots, which will not only lead to uneven growth of crops, but also cause It will reduce water and fertilizer use efficiency. As a high-efficiency water-saving irrigation unit suitable for large-scale and intensive production, large-scale sprinkler irrigation machines (circular sprink...

AI Technical Summary

Problems solved by technology

However, there are large differences in soil physical properties and real-time crop growth conditions in large-scale farmlands. If uniform irrigation and fertilization is still used, it will cause excessive or insufficient irrigation and fertilization in local plots, which will not only lead to uneven growth of crops, but also cause Will reduce water and fertilizer use efficiency

Images