玉米对生种子脱粒机试验  

Experiment on Thresher of Maize Pair Seeds

作　　者：王晶[1] 聂影[2] 宫元娟[1] 章惠全[2] 孙荣强 

机构地区：[1]沈阳农业大学工程学院,沈阳110161 [2]辽宁省农业机械化研究所,沈阳110161 [3]海城市农业机械化学校,海城114200

出　　处：《农业机械学报》2011年第2期104-108,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金：科技部粮食丰产科技工程项目(2006BAD02A1)

摘　　要：为提高玉米对生种子脱粒率,降低籽粒的破损率,对对生种子脱粒机进行了试验设计。采用玉米品种为美玉3号,进行四因素二次回归正交试验,分析了玉米果穗平均含水率、玉米果穗平均直径、脱粒机钻具直径和钻具锥角等因素对对生种子脱粒率和籽粒破损率的影响,建立数学模型并利用多目标非线性优化理论与方法,优化其参数。以对生种子脱粒率最高和籽粒破损率最低为评价指标,在果穗含水率为44%情况下,确定脱粒机的最优参数组合:果穗平均直径为39 mm时,钻具直径为23 mm,钻具锥角为74°;果穗平均直径为42 mm时,钻具直径为24 mm,钻具锥角为72°;果穗平均直径为47 mm时,钻具直径为25 mm,钻具锥角为70°。In order to improve the thresh efficiency of maize pair seeds and reduce the percentage of damaged seeds,experiments were carried out about the maize pair seeds thresher.The variety of maize was Meiyu No.3.The quadratic orthogonal tests were used.The effect of average water content,maize ear average diameter,thresher drilling tool diameter and drill angle on thresh percentage of pair seeds and damaged seeds of maize was analyzed.The mathematical model was developed.Taken the highest thresh percentage of pair seeds and the lowest percentage of damaged seeds as an evaluation index,the optimal parameters of thresher were obtained through multi-goal non-linear optimizing method.When the average diameter of maize ear was 39 mm,the ear water content was 44%,the drilling tool diameter was 23 mm and its angle was 74°.When the maize ear average diameter was 42 mm,the ear water content was 44%,the drilling tool diameter was 24 mm and its angle was 72°.When the maize ear average diameter was 47 mm,the ear water content was 44%,the drilling tool diameter was 25 mm and its angle was 70°.

关 键 词：玉米 对生种子 脱粒机 钻具 优化设计 正交试验 

分 类 号：S226.12[农业科学—农业机械化工程]