Research On Pear Tree Balanced Fertilization Expert System Based On Android System

Pear is recognized as the third largest fruit tree in our country,after apple and orange.China also has strong competitiveness in the world in terms of total cultivated area and total output.In major pear producing areas such as Shaanxi,Shandong and Hebei,pear industry is also an important pillar industry to promote local agricultural development and increase farmers’ income.The improvement of pear yield and quality is closely related to nutrients.Pear trees need different kinds of fertilizers and dosages in different growth periods.Therefore,it is necessary to meet the nutrient requirements of the tree body in order to achieve high yield and high quality.However,the ecological environment in which different pear varieties grow varies greatly.The phenomenon that farmers blindly apply fertilizer depending on experience is serious.The subjective factors of applying fertilizer are very large.The lack of scientific guidance,coupled with the lack of experts in related fields,are far from meeting the needs of farmers and managers.As a result,the soil nutrients in pear orchards are unbalanced and the quality of pear fruits is uneven,which seriously restricts the realization of sustainable development goals of pear industry in China.With the rapid development of agricultural informatization,agricultural expert systems and agricultural application software have entered the field of vision of farmers’ friends.As carriers of information dissemination,they can help guide farmers to solve practical production problems in a timely and effective manner.Based on the characteristics of fertilizer demand in pear tree growth,an expert system for balanced fertilization of pear trees is established using Android system.The research contents include the following aspects:(1)Establishment of a balanced fertilization database for pear orchards: A balanced fertilization database for pear orchards is established according to the principle of nutrient cycling in pear orchards,the soil nutrient information of pear orchards in major pear producing areas of the country,and the related information of mineral element contents such as fruits and branches of 20 varieties of pears planted mainly.Mysql database technology is used to store balanced fertilization data in pear orchards,and Java language and JDBC technology are used to obtain data.(2)Formulation of balanced fertilization plan for pear orchards: Based on the principle of nutrient cycling in pear orchards and the characteristics of pear tree fertilizer demand,mineral element contents such as leaves,trunks,branches,fruits,irrigation water and the like of high-yield standard orchards in the main producing areas of pear orchards in China are analyzed and sorted out,a calculation formula of balanced fertilization amount for pear orchards is established,and an appropriate fertilization plan is formulated according to the characteristics of soil in each region.(3)Establishment of pear tree balanced fertilization expert system based on Android system: using Android platform system technology,using Ajax and Mysql database technology to obtain background data,and using Java programming to realize recommended fertilization types and schemes,etc.The system consists of four parts:home page,consultation,fertilization plan and fertilizer characteristics.The software has a friendly interface,and the visual operation is easy to understand and easy to learn.It can provide users with the recommended application amount of fertilizer during pear tree growth and has certain practical value.