穴盘水稻秧苗拔断力学特性的试验研究  

Experimental Study on Fracture Mechanic Characteristics of Rice Seedlings Sprouted in Plastic Cell-tray

作　　者：马瑞峻[1] 区颖刚[1] 赵祚喜[1] 毛宗源[2] 

机构地区：[1]华南农业大学工程学院 [2]华南理工大学自动化学院

出　　处：《农业机械学报》2004年第1期56-59,68,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家教委博士点专项基金资助项目 (项目编号 :95 0 5 0 8);华南农业大学博士科研启动项目 (项目编号 :2 0 0 2 0 0 6)

摘　　要：建立了一个用于工厂化穴盘水稻秧苗力学特性的测试系统。通过试验发现 ,单株穴盘水稻秧苗不同位置高度承受的拔断力不同 ,秧苗茎部最大 ,叶部次之 ,叶枕部最小。平均单株秧苗茎部承受拔断力约为 3.732 N。一穴多株秧苗承受的拔断力随株数的增加而增大 ,其变化趋势可由指数方程 P=2 .891 2 K exp(0 .2 894 n)A measuring system was set up for experimental study on fracture mechanic characteristics of rice seedlings sprouted in plastic cell trays at an industrial nursery, which consisted of a force sensor, a micro force measuring instrument, a gripper of the manipulator, data collecting software, and so on. The experimental results illustrated that the fracture force of single rice seedling is different at different height positions. The average force at stem of rice seedlings is about 3 732 N that is greater than that at leaf and smaller than at pedestal. The fracture force exerted at stem of different rice seedlings increases as increasing of the number of rice seedlings in one soil ball, which follows the exponential function P=2 891 2K exp(0 289 4 n ).

关 键 词：穴盘 水稻秧苗 断裂力 力学特性 试验 

分 类 号：S233.71[农业科学—农业机械化工程] O346.1[农业科学—农业工程]