The yield and its components of rapeseed in rice/rapeseed intercropping system were studied under three sowing dates (7 days before late rice harvesting, 3 days before late rice harvesting, after late rice harvesting) and two seed treat-ment ways ( seed processing with uniconazole, un-processing) in paddy field with Xiangzayou 753 as material which pro-vided by the Oil Crops Research Institute of Hunan Agricultural University. The results showed that there existed signifi-cant effects of sowing date and seed processing ways on yield of rapeseed, and the best treatment was seeding three days be...