氮肥减施对烤烟生长发育及产质量的影响

摘要

In order to increase the nitrogen use efficiency,protect ecological environment and increase economic benefits,the test was conducted to find out the optimum nitrogen application rate for flue-cured tobacco in Wenshan region.The effects of different nitrogen fertilizer reducing treatmens on the agronomic traits,disease resistance,economic traits,economic benefits and the inner quality of tobacco leaves were analyzed with Yunyan 87 as material.The results showed that on the basis of conventional fertilization (nitrogen amount as 111 ～ 116 kg/hm2),reducing 10％ ～20％ of nitrogen was beneficial to the improvement of agronomic traits and disease resistance.When the reduction of nitrogen was 10％ and 20％,the comprehensive effects could be improved,the yield increased by 4.5％ and 2.2％,and the benefit increased by 28.1％ and 24.1％.%为提高氮素养分资源利用效率、保护生态环境和增加经济效益,以明确文山烟区烤烟的氮肥适宜施用量,以云烟87为材料,研究了不同氮肥减施对烤烟农艺性状、抗病能力、经济性状与经济效益、烟叶内在品质的影响.结果表明:在常规施肥(施氮量为111～116 kg/hm2)基础上,减氮10％ ～ 20％有利于烤烟农艺性状的改善,提高抗病能力;减氮10c％、20％％可提高综合效果,增产幅度别为4.5％、2.2％,增值幅度分别为28.1％％ 、24.1％.