A Study on Growth and Development of Wheat-Cotton Intercropping of Xinjiang

The study on the growth and development of the wheat-cotton intercropping of Xinjiang indicated that the open boll stage in the wheat-cotton intercropping is later than that of monoculture cotton,and growing period is 4 days longer than monoculture cotton because the symbiosis period has 50 days,and the agronomic character such as plant height,stem diameter and leaf age are less than monoculture;but the growth rate of intercropping cotton than that of monoculture cotton after symbiosis period.At last,intercropping cotton surpassed monoculture one in all aspects.The peak of leaf area index is 2.77 in wheat-cotton intercropping on the July 25th.The output of ginned cotton in intercropping cotton is 1 338.4 kg/hm2 about 64.6% in monoculture cotton.