关键词: 播种量, 混种, 秧苗素质, 产量

Abstract: The mixed cropping way of 4∶6 proportion between Longgeng 39 and Longgeng 31 is widely used in the third temperature zone of Heilongjiang Province, the effects of different sowing amount on seedling quality and yield were studied in this paper. The results showed that, with the increase of seeding amount, seedling height increased, leaf number, root number, stem width, stem plumpness, and dry weight and fresh weight decreased, while the root set strengthened, disease rate and disease index of seedling blight increased. The yield of the treatment by 110 g/disk dry seed was the highest, up to 9 282.45 kg/hm2.

Key words: sowing amount, mixed cropping, seedling quality, yield