棉 花 学 报      Cotton Science      2009，21(3)：201-205

Analysis of Cotton Delayed Cool Injury Indices in Xinjiang Based on COSIM
CHEN Chao^1，2，PAN Xue－biao^1*，LI Hui-yang¹，ZHANG Li-zhen¹，LONG Bu-ju¹
(1.College of Resources and Environment，CAU，Beijing 100193，China；2.Sichuan Climate Center，Chengdu 610071 ，China）

Abstract：According to the cotton test data acquired from Shihezi and Shache in Xinjiang,the parameters of COSIM model were adjusted and the validity was validated.The result indicated that the growth and the yield of cotton simulated well. By analysing the simulated results of 45 years and the data of different sowing periods in 2004 with statistical methods,we found that the seed cotton yield had a positive linear correlation with ≥ 12 ℃ effective accumulative temperature and flowering stage.Therefore,the values of ≥ 12 ℃ effective accumulative temperature decreased and the flowering stage postponed by comparing with the average values were two indices to assess cotton delayed cool injury.The correlative coefficient between the delayed cool injury indices and the years of serious yield reduction due to climate was about 80%.
Key words：cotton；COSIM；delayed cool injury;index     [Full Text, 2191KB]