晋南低温与霜冻发生规律及其对棉花生产的影响  

Effects of Low Temperature and Frost to Cotton Production in Southern of Shanxi Province

作　　者：史俊东[1] 张建诚[1] 许爱玲[1] 李永山[1] 姚景珍[1] 董哲生[1] 

机构地区：[1]山西省农业科学院棉花研究所,山西运城044000

出　　处：《山西农业科学》2010年第3期30-33,共4页Journal of Shanxi Agricultural Sciences

基　　金：十一五"国家科技支撑计划项目(2006BAD04B08-04);山西省农业科学院专利项目(yzl0902)

摘　　要：温度是影响棉花生长的重要因子。研究了晋南主产棉区——运城市棉花生育期气温变化的特点,结果表明,近年来运城市的终霜冻有20%的年份晚于4月1日(正常年份为3月上旬),早霜冻有27.3%的年份早于10月5日(正常年份为11月上中旬);在播种出苗期,气温不稳定,有66.6%的年份在最低气温10℃稳定通过3 d以后,又出现10℃以下的低温3 d左右;从苗期到吐絮期出现对棉花发育不良的气温均有10%以上的概率。Temperature is one important factor for cotton. The air temperature is analyzed in cotton production area in south- ern of Shanxi Province during cotton growth stages.In recent years, occurrence probability of final frost day after April 1 was 20%, which occurred during the first ten days in March in normal years; 27.3% for early frost day before Oct. 5 which occurred during the first and middle ten days in November in normal years. 66.6% probability of low temperature years happened when air minimum temperature stably pass through 10℃- for three days and subsequently occurrences below 10 ℃ for three days during sowing and seedling stages. 10% more probability of disadvantage temperature occurred during the tatat growth stages.

关 键 词：低温 霜冻 棉花 为害 

分 类 号：S562[农业科学—作物学]