Abstract: The study shows that after transplantation, the dry-raising seedlings still kept high physiobiochemical vigor.From tillering to milky stage, the dry-raising plants had higher activities of ascorbate oxidase, superoxide dismutase, peroxidase, catalase, ATPase and nitrate reductase, but lower content of malondialdehyde and lower membrane permeability than the wet raising plants, indicating that dry-raising plants had a strong adversity-resistance, and thereby, they could turn green fast, tiller early, have a high productive tiller rate, keep their leaves to grow for a longer period of time, and have more dry matter accumulation and high yield.

Key words: Early rice, High-yielding cultivation, Enzymic activity, Dry-matter accumulation, Yield formation