Effect of Magnesium Fertilizer on the Main Chemical Compositions and Organic Acids Content in Flue-cured Tobacco Leaves
YAO Li1, LIU Haitao1, WANG Xie1, PANG Liangyu1, YANG Junwei2, GUO Shiping3
1. Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu 610066, China;
2. Panzhihua Branch, Sichuan Tobacco Company, Panzhihua 617026, China;
3. Sichuan Tobacco Company of China National Tobacco Corporation, Chengdu 610000, China
[Purpose] In this work, the effect of magnesium fertilizer on the main chemical compositions and organic acids content in flue-cured tobacco leaves was investigated in Panzhihua tobacco planting areas.[Method] The field experiment was randomly divided different small field, which was setup five levels of magnesium (0, 50, 75, 100, 125kg/hm2).[Results] The results indicated that when magnesium application level was 75-100kg/hm2, the content of the main chemical compositions of tobacco leaf were suitable and most close to the appropriate content of high quality tobacco. Compared with CK, the content of the non-volatile organic acids in upper and middle leaves increased by 9.31% and 7.06%, respectively, when magnesium application level was 100-125kg/hm2. Moreover, the content of the higher fatty acids in upper and middle leaves increased by 11.5% and 16.1%, respectively.[Conclusion] Thus, the application of 100kg/hm2 magnesium fertilizer had positive effect on coordinating the chemical compositions and promoting the increase of the organic acids content. This study will provide the scientific basis for the application of magnesium fertilizer in Panzhihua area.
YAO Li, LIU Haitao, WANG Xie, PANG Liangyu, YANG Junwei, GUO Shiping.Effect of Magnesium Fertilizer on the Main Chemical Compositions and Organic Acids Content in Flue-cured Tobacco Leaves[J] Journal of Yunnan Agricultural University, 2017,V32(4): 712-717