The study carried out the test of mechanical single grain sowing way,mechanical harvesting period,the ratio of NPK fertilizer,spraying way,seed manure simulcasting,grain filling properties for Liaoyu23.The results showed that we should take mechanical single grain sowing way according to 75 000 grains/hm~2,mechanical harvest after sowing 105-110 days,apply the ratio of NPK fertilizer 2∶1∶2,use helicopters spraying mixed medicament control plant diseases and insect pests in the later period after pollination...