凹形圆盘式玉米垄作免耕播种机的设计与试验  

Design and experiment on concave disc type maize ridge-till andno-till planter

作　　者：王庆杰[1] 李洪文[1] 何进[1] 李问盈[1] RabiG.Rasaily 

机构地区：[1]中国农业大学工学院,北京100083

出　　处：《农业工程学报》2011年第7期117-122,共6页Transactions of the Chinese Society of Agricultural Engineering

基　　金：公益性行业(农业)科研专项(200903009)

摘　　要：针对东北垄作区免耕播种玉米存在的垄台清理效果差,机具堵塞严重,作业效率低等问题,设计了凹形圆盘式玉米垄作免耕播种机,研究了凹形圆盘式垄台清理装置,通过分析其运动特点,确定了其关键结构参数。在玉米秸秆覆盖的垄作地的试验结果显示,凹形圆盘式玉米垄作免耕播种机垄台清理效果好,能够有效防止秸秆堵塞,形成清洁种床。种肥间距为47mm,均匀性好。土壤扰动量为22%,播种后种带秸秆覆盖率降低了75.9%,有利于提高苗期地温,改善播种质量,可较好满足东北垄作区玉米免耕播种的要求。The concave disc type maize ridge-till and no-till planter was designed to solve the problems of straw blocking,bad ridge-clear effect and low working efficiency.The idea was put forward to solve problems by combining the concave disc with flat disc,and the designing of concave disc type ridge-clear device.The key structure parameters were conformed through analysing its moving characters.The ridge-tillage field experimental results with the straw covered showed that,concave disc type maize ridge-till and no-till planter was effective in anti-blocking and ridge-clear effect,and created clear seed bed.The separation space between seed and fertilizer was approximately 47 mm,and good uniformity was shown.Soil disturbance was about 22%,and the straw coverage rate decreased by 75.9% on the seedbed after planting,which could increase soil temperature,enhance seeding quality.The results show important significance for the popularization and application of maize ridge-till and no-till in the northeast of China.

关 键 词：保护性 农业机械 设计 耕作 垄作 凹形圆盘 清理装置 

分 类 号：S223.2[农业科学—农业机械化工程]