Abstract: Through the screening test of six self-selected cotton early maturing lines, the results showed that the new lines of cotton （Gosavwim spp） H8010 and H208 showed suitable mechanized harvest in early maturity, high yield, fiber quality and agronomic traits. The suitable planting density of the new lines of cotton H8010 is 60 000~67 500 plants/hm². Under this planting density condition, the seed and lint yield are the highest, which has good potential for popularization and application.

Key words: machine picking cotton （Gossypium spp）, early maturing, new line, density