Research For Precision Fertilization System Of Maize Based On Improved BP Neural Network

Maize is one of the most important grain crops in China,which has high economic value and plays an indispensable role in grain production,affects the development of my country’s politics,economy and society.According to statistics,the application of chemical fertilizer is of great significance to increase yield and income of maize.The data show that the application of chemical fertilizer in China has been increasing year by year in recent years.The contribution rate of chemical fertilizer to grain is about half.Therefore,to some extent,it can be explained that the food problem is caused to a large extent by the chemical fertilizer problem,and improper or excessive use of chemical fertilizer will cause certain pollution to the environment,at the same time,it will reduce the corn yield and land quality level,and bring unnecessary economic losses and burdens to farmers.In order to solve the negative impact of blind fertilization on grain yield and the environment,so as to optimize yield,quality and environmental benefits,experts at home and abroad have proposed precision fertilization techniques to guide farmers to apply fertilizers in a scientific and reasonable manner.According to the definition,precision fertilization technology is a technology based on a large number of field trials and comprehensively considering the needs of crops.Under the influence of factors such as soil quality,fertilization amount,fertilization effect and other factors,the optimal fertilization distribution plan for trace elements such as N,P,K,etc.is obtained.With the increasing scientific level,modern information technology provides an unprecedented innovative means for the modernization of agricultural science in China.For example,artificial intelligence,big data,Internet of things and other new generation of information technology and agriculture in many ways,deep integration,precision agriculture and intelligent agriculture for the development of a strong foundation,it will provide a new way to solve the problems such as the shortage of resources and the pollution of ecological environment.Therefore,in view of this question,this paper has mainly carried on the following research.(1)the model of maize precision fertilization based on improved BP neural network was established.Through a certain investigation,the relevant maize data are sorted,summarized and analyzed comprehensively,the number of hidden nodes in BP neural network is optimized by using standard particle swarm optimization algorithm,and the sample data is detected and calculated by using the improved algorithm model,according to the weight calculation of N,K and P fertilizer,the function model of precision fertilization of soil was established by comparing the data of fertilization amount and yield.The results showed that the improved BP neural network was applied to the strategy of establishing precision fertilization model of corn,will play a good fertilization decision-making effect.(2)on the basis of the model,a maize precision fertilization database based on improved BP neural network was established.The fertilization database and spatial attribute database of precision fertilization system were constructed by My SQL and Geodatabase,and fertilization decision was made by Arc GIS combined with field test results.(3)combining the research results,using HBuilder as platform,using HTML5 language to design a corn precision fertilization system based on improved BP neural network.This paper analyzes the requirement and feasibility of the system,and designs the frame and function of the system according to the target and principle of the system.In the era of artificial intelligence,the precise fertilization system of maize is very important to reduce the pollution to the natural environment,and to obtain high yield of maize and excellent quality with a small amount of fertilizer,at the same time,the effect of the improved precision fertilization system of maize is obviously better than the traditional method,which can provide the guidance of fertilization formula for farmers and reduce the cost of agricultural production,at the same time,the research on precision fertilization system of maize has certain theoretical significance and application value.