Abstract: Xinchun 6 is hybrid bred by Zhong 7903 and improved Xinchun 2 in insititue of nuclear & biotechnology，Xinjiang academy of agricultural sciences. It was named after examination and approval by Xinjiang crop variety approval committee in 1993.Xinchun 6 had been chosen through individual plant for 3 years and bred through strain for 2 years in 149 Regiment.It was demonstrated in fine breed company in 1997.Many advantages，such as high yield，stable yield，lodging resistance，disease resistance and strong suitability，were showed. It was identified as key variety.