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2bf-6 Type no-tillage combine seeder for rape in stubbly field .

2bf-6型稻茬田油菜免耕联合播种机的研究。

Study on photoelectric controlled precision seeder .

光电控制穴盘精密播种装置的研究。

Design of automatic supplying seed system for plot seeder of rape .

油菜育种播种机自动供种系统设计。

Operating quality for wheat no-tillage seeder .

小麦免耕播种机作业质量。

Operating quality for no-tillage grass seeder .

牧草免耕播种机作业质量。