江西农业大学学报2012，Vol.34Issue(5)：893-898,6.
干旱对云烟87和K326的农艺性状影响研究
A Study on the Effects of Drought Stress on the Agronomic Traits of Yunyan87 and K326
摘要
Abstract
The responses of agronomic characters of flue-cured tobacco Yunyan87 and K326 to drought stress were studied in the rosette stage, the vigorously growing stage and the budding stage respectively by controlling water under rainproof shelter. The drought time was set to 7 d, 10 d, 13 d, 16 d, long term drought with one group as the control. The long term drought was used for measuring the soil water content. The result showed that; the plant heights of Yunyan87 and K326 showed a downward trend while prolonging the dry spells, the most influential time was drought 16 d especially in the vigorously growing stage and the amplitude reduction was 42. 2% and 41. 3% respectively. The worst inhibitory effect of drought time on the stem and average effective leaf area of the two varieties in each growing stage was 16 d, the descent of stem of Yunyan87 in the rosette stage, vigorously growing stage and budding stage was 22. 9% , 17. 5% and 34. 6% respectively which of K326 was 31. 1% , 21.6% and 13.2%. The decreasing ranges of leaf area of Yunyan87 in the rosette stage, vigorously growing stage and budding stage was 20. 6% , 35. 6% and 27. 9% which of K326 were 42. 5% , 20. 4% and 20. 2%. Both of the root - shoot ratios rose first and then fell in the rosette stage and vigorously growing stage which fell slowly in the budding stage. The stage of largest water consumption of the two varieties was in the vigorously growing stage and the soil moisture content under Yunyan87 stopped growing in the resettling growth stage, vigorously growing stage and budding period and the soil water contents were 5.7% , 7. 4% and 5. 5% respectively, while those under K326 were 6. 0% ,7. 3% and 6. 4% . Overall, the capacity of drought resistance of Yunyan87 is a little bit better than that of K326.关键词
干旱/农艺性状/云烟87/K326Key words
drought/ agronomic traits/ Yunyan87/ K326分类
农业科技引用本文复制引用
丁雪丹,肖玉,周紫燕,肖金香..干旱对云烟87和K326的农艺性状影响研究[J].江西农业大学学报,2012,34(5):893-898,6.基金项目
江西省教育厅资助项目(GJJ12225) （GJJ12225）
