Virtual model-based paddy rice plant distance optimization method

Abstract

The invention discloses a virtual model-based paddy rice plant distance optimization method. The method comprises the following steps that 1) based on an existing functional structure model of singlepaddy rice, a light radiation model is built according to a nested radiosity algorithm and a reverse Monte Carlo ray tracing algorithm by utilizing a GroIMP platform, a transmission process of light rays, shielded by different mediums, in a scene is simulated, and an illumination interception quantity of a canopy of a single plant in a colony is calculated, thereby building a paddy rice colony growth model with a certain physiological function; and 2) a genetic algorithm-based plant distance optimization method comprises the following steps of (2.1) performing genetic coding; (2.2) performingpopulation initialization; and (2.3) performing genetic operation to obtain relatively high-yield plant distance and line spacing suitable for paddy rice. The optimum or suboptimum of the plant distance is achieved on the premise of taking the yield as an optimization standard; and the problem of long time of a field test is solved.

Description

technical field [0001] The invention relates to a method for optimizing the distance between rice plants based on a virtual model, and the method is suitable for optimizing the distance between rice plants in the field. technical background [0002] A virtual plant is a virtual model of a real plant generated in a computer using computer technology. The virtual plant model can not only reproduce the natural landscape, generate game scenes, make film and television animation, build garden planning, etc., but also use the physiological structure model of plants to visually express the dynamic growth process of plants, so as to dynamically control the main production links. regulation, serving the production of agriculture and forestry. Virtual plants have shown good application prospects in many fields. No matter from the perspective of science or technology, the research of virtual plants is an important and challenging research direction. [0003] The planting distance of ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that it is difficult for traditional agriculture to determine a reasonable planting distance for different types of rice, the present invention proposes a method for optimizing the planting distance of rice based on a virtual model, using the virtual rice growth model to construct a certain-scale rice growth scene, Combined with the genetic algorithm, the yield per unit area of ​​rice is used as the fitness value, and the global search ability of the genetic algorithm is used to obtain the plant spacing and row spacing suitable for the high yield of this type of rice

Images