Optimized design and experiment of spiral-type intra-row weeding actuator for maize(Zea mays L.)planting  

作　　者：Honglei Jia Binglong Gu Zhongyang Ma Huili Liu Gang Wang Mingwei Li Hewen Tan 

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

出　　处：《International Journal of Agricultural and Biological Engineering》2021年第6期54-60,共7页国际农业与生物工程学报（英文）

基　　金：supported by the National Natural Science Foundation of China(Grant No.31901408).

摘　　要：Mechanical weeding not only avoids crop herbicide residue but also protects the ecological environment.Compared with mechanical inter-row weeding,mechanical intra-row weeding needs to avoid crop plants,which is conducive to causing a higher rate of seedling damage.In order to realize maize(Zea mays L.)intra-row weeding,a maize intra-row weeding mechanism was designed in this study.The mechanism can detect maize seedlings by infrared beam tube,then a sliding-cutting bevel tool moves spirally amid maize seedlings,so as to eradicate intra-row weeds.A field experiment was conducted under the following experimental conditions:the bevel tool rotation speed was 800-1400 r/min,the mechanism forward speed was 4-7 km/h,and the bevel tool depth was 2-14 cm,the experimental results illustrated that the mechanism’s average weeding rate and seedling damage rate were 95.8%and 0.6%,respectively.The variance analysis showed that the primary and secondary factors that affecting the weeding rate and seedling damage rate were the same,which were bevel tool rotation speed,mechanism forward speed,bevel tool depth in soil in a descending order according to the significances.The result of the field experiment may provide a reference for intra-row weeding device design.

关 键 词：optimization design spiral forward intra-row weeding actuator maize planting 

分 类 号：S51[农业科学—作物学]