我圃“三结合”科学实验小组,于一九七○年九月试制成功三不复播种机,用于苗圃播种落叶松、赤松、樟子松、鱼鳞松等。二年来使用情况良好。使用三不复播种机进行播种,不用复土,复沙和复盖帘子,在床面、步道平整的情况下,既能保证质量,又能提高工作效率。具有节约劳力,减轻劳动强度,节省开支等优点。用三不复播种机播种,五人操作,日达三垧,需用工资7.85元。过去手工播种三垧地则需用3,415.50元的开支。平均每垧地为国家节省开支1,135.88元,提高工效30倍。三不复播种机主要由种子箱、磙动轴、输种管、开沟犁、复土板、镇压磙、变速齿轮等 I nursery “triple combination” scientific experimental group, in trial in September 1970 trial production of three non-seeder planting machine, used for nursery sowing larch, red pine, Pinus sylvestris, scales and so on. Two years of good use. The use of three-seeding seeder planting, without re-soil, sand and cover curtain in the bed, the formation of the track smooth, both to ensure quality, but also improve work efficiency. With labor-saving, reduce labor intensity, save costs and so on. Seeding with three non-seeder planting, operation of five people, up to three-day, need to pay 7.85 yuan. In the past, it was estimated that 3,415.50 yuan would be spent on sowing three by hand. On average, each country has saved 1,135.88 yuan on its expenditure and increased work efficiency by 30 times. Three non-seeder planting machine mainly from the seed box, 磙 moving shaft, seed pipe, plow ditching, earth board, suppression 磙, gear and other changes