Modeling method for cucumber GA-RBF photosynthetic rate prediction model integrated with stomatal conductance

Abstract

The invention provides a modeling method for a cucumber GA-RBF photosynthetic rate prediction model integrated with stomatal conductance. The method comprises the steps: utilizing a multi-factor nested test to obtain the experimental data taking the stomatal conductance, the temperature, the CO2 concentration, the illumination intensity and the relative humidity as input and taking the apparent photosynthesis rate as output; utilizing a genetic algorithm to perform initialization of population; according to the given initial range of the spread parameters, calculating a fitness function; and through selection, intersection and variation, finding out the optimal spread parameter in an RBF neural network, and constructing a cucumber GA-RBF photosynthetic rate prediction model integrated with stomatal conductance. The test result shows that the predicted value and actual measurement value determination coefficient is 0.99878; the linear gradient is 0.99781; the error is less than 6%; compared with the photosynthetic rate prediction model which does not use the genetic algorithm to optimize the RBF algorithm and does not integrated with stomatal conductance and the cucumber GA-RBF photosynthetic rate prediction model which is not integrated with stomatal conductance, the training result has better prediction effect.

Description

technical field [0001] The invention belongs to the technical field of intelligent agriculture, and in particular relates to a cucumber GA-RBF photosynthetic rate prediction model modeling method integrated with stomatal conductance. Background technique [0002] Cucumber is a light-loving and shade-tolerant crop. Insufficient light during the flowering and fruiting period will result in low photosynthetic efficiency of the leaves, especially the weak light sensitivity of the lower leaves, which will cause the melons to melt and reduce the yield. Under sufficient light intensity, the photosynthetic rate of cucumber is high, the differentiation ability of female flowers is strengthened, and the quality and yield of fruits are improved. Photosynthesis is the only biological way to capture light energy. Photosynthesis of plants converts carbon dioxide and water into carbohydrates and produces oxygen. The energy stored in carbohydrates is used to store metabolic activities in pl...

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Problems solved by technology

The value of the spread of the diffusion speed of the radial basis function directly affects the effect of the RBF neural network. Usu...

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