作　　者： ; ; ;

机构地区： 华南农业大学工程学院

出　　处： 《农业机械学报》 2010年第6期56-60,共5页

摘　　要： 提出了一种气力板式排种器,进行了具体的结构设计,选取青江小白菜种子进行了播种性能试验。单因素试验结果表明,吸种孔直径增大,单粒率先增大后减小,多粒率总体趋势为增加,空穴率先减小后增大,吸种孔直径对单粒率、多粒率和空穴率的影响都非常显著。相对压力增大,单粒率先增大后减小,多粒率先增大后减小再增大,空穴率先减小后增大。相对压力对单粒率和空穴率的影响非常显著,对多粒率的影响并不显著。生产率增大,单粒率先增大后减小,多粒率总体为先降后增,空穴率呈增大趋势。生产率对单粒率和空穴率的影响非常显著,对多粒率的影响比较显著。 Working principle of vegetable seed metering device in pneumatic plate-type was put forward.Correlative structure was designed.Qingjiang cabbage seeds were selected for sowing performance test.Single factor test results showed that with the increase of diameter of suction hole,single-seed rate began to increase and then decreased,multi-seed rate increased,empty-seed rate began to decrease and then increased.Influence of diameter of suction hole on single-seed rate,multi-seed rate and empty-seed rate was highly significant.With the increase of relative pressure,single-seed rate first increased and then decreased,multi-seed rate first increased,then decreased and last increased,empty-seed rate first decreased and then increased.Influence of relative pressure on single-seed rate and empty-seed rate was highly significant,while on multi-seed rate was not significant.With the increase of sowing efficiency,single-seed rate first increased and then decreased,multi-seed rate first decreased and then increased,empty-seed rate increased.Influence of sowing efficiency on single-seed rate and empty-seed rate was highly significant,while on multi-seed rate was not so significant.

关 键 词： 排种器 蔬菜 气力板式 设计 试验

领　　域： [农业科学] [农业科学]