Effects of foliar application of molybdenum fertilizer at different growth stages on aroma components of flue-cured tobacco
In order to test the effects of molybdenum fertilizer sprayed on the tobacco leaves at different growth stages on the contents of aroma components in flue-cured tobacco,the flue-cured tobacco variety Zhongyan 100 was served as the test material.Four treatments were set up in the experiment:T1,control;T2,0.10%molybdenum fertilizer sprayed at the resettling stage;T3,0.10%molybdenum fertilizer sprayed at the topping stage;T4,0.10%molyb-denum fertilizer sprayed both at the resettling stage and the topping stage.Samples of tobacco leaves were treated by simultaneous distillation and extraction,and the types and contents of aroma components in tobacco leaves were de-termined by gas chromatography-mass spectrometry(GC-MS).The results showed that there were 84,89,87,and 94 types of aroma components in B2F flue-cured tobacco under T1,T2,T3 and T4 treatments,respectively.The to-tal content of aroma components(except neophytadiene)in B2F flue-cured tobacco reached the highest value under T2 treatment,which was followed by T4 and T3 treatments.The total content of aroma components(except neophyta-diene)in B2F flue-cured tobacco under T2,T4 and T3 treatments was significantly(P＜0.05)higher than that un-der the control by 27.76%,7.76%,and 5.88%,respectively.The neophytadiene content of B2F flue-cured tobac-co under T2 and T3 treatments was significantly higher than that under the control.There were 88,102,108,and 95 types of aroma components in C3F flue-cured tobacco under T1,T2,T3 and T4 treatments,respectively.The to-tal content of aroma components(except neophytadiene)in C3F flue-cured tobacco reached the highest value under T3 and T4 treatments,which was followed by T2 treatment.The total content of aroma components(except neophyta-diene)in C3F flue-cured tobacco under T3,T4 and T2 treatments was significantly higher than that under the control by 73.73%,71.64%,and 62.17%,respectively.The neophytadiene content of C3F flue-cured tobacco under T2 treatment was significantly higher than the others.There were 70,84,67,and 81 types of aroma components in X2F flue-cured tobacco under T1,T2,T3 and T4 treatments,respectively.The total content of aroma components(ex-cept neophytadiene)in X2F flue-cured tobacco varied significantly among treatments as T2>T4>T1>T3,and the total content of aroma components(except neophytadiene)under T2 and T4 treatments were significantly higher than that under the control by35.72%and30.61%.The neophytadiene content of X2F flue-cured tobacco reached the highest value under T2 and T4 treatments,followed by T3 treatment,which were all significantly higher that of the control.Overall,spraying 0.10%molybdenum fertilizer at the resettling stage could significantly increase neophyta-diene content and the total content of aroma components(except neophytadiene)in flue-cured tobacco.
万方数据
维普
