【摘要】 精少量播种和种肥分层深施是国内推广的农业新技术,本设计采用新型专利工作部件,使2BF—7型种肥正位分层谷物精少量播种机成为这两项新技术的载体。更多还原

【Abstract】 The few—precision drilling and applying seed—fertilizer deeply with layers are new agricultural technigue being spreaded in China. Designer apply the new worked parts with patient, so the few—precision and two layers fertilizeer—grain drill model 2BF—7 become carrier of the two new technigues.更多还原