柽麻是一种从南方引进的夏播豆科绿肥作物,在我省适于作麦茬复种的绿肥。但是,在我省推广柽麻种植中有一个严重问题就是留种困难,种子产量低,亩产只有20～30斤。为了找出柽麻在沈阳地区高产留种的适宜种植技术,1978年在院内试验田上安排了播期,打尖和密度等复因子试验。 Ma flax is a summer sowing introduced from the south of green manure crops, suitable for crop stubble green manure in our province. However, there is a serious problem in popularizing sisal cultivation in our province because it is difficult to stay in the country. The output of seeds is low, and the output per mu is only 20-30 kg. In order to find out the suitable cultivation techniques of high-yield seed-stay in China, in Shenyang, in 1978, multiple-factor tests such as sowing date, spike and density were conducted on the experimental field in the hospital.