Design and experiment of a subsoiling variable rate fertilization machine  

作　　者：Jiangtao Qi Xinliang Tian Yang Li Xuhui Fan Hongfang Yuan Jiale Zhao Honglei Jia 

机构地区：[1]Key Laboratory of Bionic Engineering,Ministry of Education,Jilin University,Changchun 130022,China [2]College of Biological and Agricultural Engineering,Jilin University,Changchun 130022,China [3]Jilin Province Academy of Agricultural Machinery,Changchun 130022,China

出　　处：《International Journal of Agricultural and Biological Engineering》2020年第4期118-124,共7页国际农业与生物工程学报（英文）

基　　金：The authors acknowledge that this work was financially supported by the National Natural Science Foundation of China(No.31401284);the National Key Technology Research and Development Program of the Ministry of Science and Technology of China(No.2014BAD06B03).

摘　　要：In order to improve soil fertility and fertilizer utilization,a subsoiling variable rate fertilization machine based on conservation tillage and precision agriculture was designed and tested.The relationship between suspension parameters and penetrating distance was analyzed,and a matching model between fertilizing quantity and penetrating distance was established.The variable rate fertilization control machine was developed based on an Advantech PCM-9363 industrial control mainboard.The machine operates under two patterns:DGPS-based positioning and straight-line path positioning based on a planar coordinate system.This machine can perform on-demand fertilization according to the spatial differences in soil nutrients and the prescription maps pre-set before the operation.Field experiments showed the machine has a subsoiling stability of 92.5%,a soil breaking rate of 61.1%,a maximum positioning relative error of 2.68%and a maximum variable rate fertilization error of 3.89%.The subsoiling performance and variable rate fertilization indices of this machine satisfy the requirements of GB/T24675.2-2009.The tested indices meet the national and industrial standards and satisfy the design requirements.The findings of the research can be used as the structural design of the subsoiling variable rate fertilization machine.

关 键 词：agricultural machinery conservation tillage precision agriculture SUBSOILING variable rate fertilization 

分 类 号：S15[农业科学—土壤学]