摘要
对新疆三个主要棉区棉花严重气候减产年的热量状况的分析得出 :①严重气候减产年都是严重的延迟型低温冷害年份。② 60年代以来每个年代逢 3 ,9的年份为棉花气候减产关键年。③石河子和阿克苏棉区绝大多数严重的气候减产年初霜冻期早于或接近常年、无霜冻期短于常年。④石河子、阿克苏、喀什三棉区绝大多数严重气候减产年≥ 1 0℃、≥ 1 5℃、≥ 2
Amount of heat in serious reduction years of cotton climatic output in Kashi, Aksu and Shihhotze areas is analyzed ,and the results obtained are as follows: ① The serious reduction years of cotton climatic output occurred after cotton suffered from heavy delayed low temperature chilling injury.② The years having 3 or 9 at its year number tail in each decade years have been mostly key years of cotton climatic reduction since the 1960's. ③ First frost day was earlier or nearer than normal and frost free period is shorter than normal in most of serious reduction years of cotton yield for Shihhotze and Aksu cotton areas. ④ Cumulative temperatures of ≥10℃、≥15℃、≥25℃ were all less than normal in most of serious climatic reduction years of cotton for the three cotton areas.
出处
《新疆农业大学学报》
CAS
2000年第4期20-26,共7页
Journal of Xinjiang Agricultural University
基金
新疆重点科研项目(980103002)
新疆气象局联合资助
关键词
产量指数
气候减产年
气温
积温
棉花
热量特征
output index
reduction year of cotton climatic output
temperature
cumulative temperature
first frost day
chilling injury
