摘要
研制一种可一次性完成玉米根茬粉碎还田、起垄、施肥、精密播种联合作业的2BYML-4型玉米垄作免耕播种机,对其整机结构和工作原理进行了分析,通过理论计算确定了仿形机构、灭茬刀转速和控制系统的相关参数。田间试验结果显示:垄高、垄顶宽、垄间距合格率分别达到94.73%、90.64%和90.13%;粒距合格指数92.0%,标准差11.99,变异系数5.24%;漏播指数4%,重播指数4%;种子覆土深度合格率为88.3%,种下施肥合格率为89.7%,变异系数分别为9.71%和10.32%。该机田间作业垄形规则,种、肥田间分布均匀合理,其结构参数和工作参数组合,更好地满足了旱地农业保护性耕作要求并有效改善生态环境。
A 2BYML-4 ridge no-tillage maize planter was developed,which can complete the maize stubble smashing and returning to the field,ridging,fertilizing and precision seeding at one time.The structure and working principles of the machine were analyzed.The results of the prototype in field test showed that the qualified rate of ridge height,ridge top width,ridge spacing,the qualified index of grain spacing,the standard deviation,the coefficient of variation,the missing sowing index,the replaying index,the qualified rate of seed covering depth,the qualified rate of fertilization under sowing,and the coefficient of variation was 94.73%,90.64%,90.13%,92%,11.99,5.24%,4%,4%,88.3%,89.7%,9.71% and 10.32%,respectively.The machine has regular ridge shape,with uniform and reasonable distribution of seeds and fertilizers in the field.Its combination of structural parameters and working parameters can better meet the requirements of conservation tillage in dryland agriculture and effectively improve the ecological environment.
作者
位国建
方会敏
崔荣江
荐世春
WEI Guojian;FANG Huimin;CUI Rongjiang;JIAN Shichun(Shandong Academy of Agricultural Machinery Sciences,Jinan 250100,China)
出处
《华中农业大学学报》
CAS
CSCD
北大核心
2019年第5期152-158,共7页
Journal of Huazhong Agricultural University
基金
“十三五”国家重点研发计划重点专项(2016YFD0300800
2017YFD0301005)
关键词
播种机
耕播联合作业机
免耕防堵
玉米
垄作
保护性耕作
免耕播种机
seeding machine
combined tillage-sowing machine
no-tillage and anti blocking
corn
ridge cultivation
conservation tillage
no-tillage planter
