Study On Variable Rate Fertilization Based On John Deere 7200 No-tillage Planter

Precision agriculture is at the most reasonable investment, which aims to achieve the optimum economic efficiency, the maximum input and output, and to protect the environment, improve quality,and finally to achieve sustainable development in agriculture.According to different plots and different crops, the different soil types, all kinds of trace elements in soil of different variable fertilization, technology of variable rate fertilization can do it with agricultural science and technology, to achieve low cost and high yield, low pollution and high environmental protection effect.This thesis is based on the theory of variable rate fertilization that already existing at home and abroad, global positioning technology, geographic information technology and software engineering as the foundation, using software to make the SMS, basic variable precision agriculture fertilizer prescription figure, using field computer, differential GPS positioning system and hydraulic motor and other tools, implementation in the prescription chart of variable rate fertilization under the instructions of the mechanical field of variable rate fertilization variable assignment.The field experiment was conducted at the groud of Jia Xi,This experiment used John Deere 1354 models as the tractors and the models that used is John Deere 7200 type seeder.The actual formula fertilizer consumption and the actual speed are concluded from agricultural machinery laboratory bench test, row to row of fertilizer consumption to the theory and practical fertilizer consumption(respectively through automatic distributing experiment and manual distributing) data comparison and analysis, Set the parameter to provide the basis for the field computer.Through the tractor power output system, control motor speed,thus to control distributing shaft speed, make no-till planter complete variable fertilization.In the spring of 2015,10 hectares of land in the actual sowing homework tasks was finished the groud of Jia Xi,and in the corn seedling stage, tasseling stage, ripening period, respectively, for data collection and analysis, economic benefits in terms of economic,plots average yield of 741 kg of maize, compared with the groud of traditional fertilization 680 kg, increase 61 kg, improve 12.2%. Compared with the groud of contrast 694 kg,increase 47 kg.Through the analysis of the economic and social benefits of variable rate fertilization, it is believed that precision agriculture is an advanced and practical agricultural science and technology,which not only reduce the cost, improve the farmers’ income,but also protect theenvironment.