| Effect of exogenous hormones on main quality indices, yields and output value of tobacco in arid plateau of East Gansu |
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| DOI：10.7606/j.issn.1000-7601.2012.03.32 |
| Key Words: tobacco exogenous hormones quality indices output value |
| Author Name | Affiliation | | ZHANG Wenming | College of Resources and Entironmental Sciences Gansu Agricultural University， Lanzhou, Gansu 730070, China
Gansu Provincial Key Lab of Aridland Crop Science, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | QIU Huizhen | College of Resources and Entironmental Sciences Gansu Agricultural University， Lanzhou, Gansu 730070, China
Gansu Provincial Key Lab of Aridland Crop Science, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | HE Xiucheng | College of Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | HU Juan | Jilin Academy of Agricultural Sciences, Changchun, Jilin 130030, China | | ZHANG Chunhong | College of Resources and Entironmental Sciences Gansu Agricultural University， Lanzhou, Gansu 730070, China
Gansu Provincial Key Lab of Aridland Crop Science, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | LI Yajuan | College of Prataculture, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | HAI Long | College of Resources and Entironmental Sciences Gansu Agricultural University， Lanzhou, Gansu 730070, China
Gansu Provincial Key Lab of Aridland Crop Science, Gansu Agricultural University, Lanzhou, Gansu 730070, China |
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| Abstract: |
| Low potassium(K) and high nicotine content of tobacco have restricted the development of tobacco pro-duction in East Gansu. Based on a field experiment, the effects of seven kinds of exogenous hormones after topping on the contents of potassium and nicotine in tobacco were studied in Zhengning of Qingyang in Gansu Province. The result showed that topping decreased K content and increased nicotine content significantly, and daubing seven kinds of exoge-nous hormones after topping could increase K content and decrease nicotine content obviously. Moreover, seven kinds of exogenous hormones had different effects on K and nicotine content. Compared with
topping, GA had the best effect, which increased K content by 42.2%, 46.5% and 56.4% in upper, middle and lower leavers respectively and made it up to over 3%, and the content of nicotine deceased to optimum value(2.5% in upper and middle leavers and 1.8% in lower leavers), The effect of 2,4-D was less effective. Daubing seven kinds of exogenous hormones after topping could increase yield, average price, ratio of mid-high grade leaves and output value of tobaceo, and GA,CTK and CEPA had better effect, while 2,4-D slightly decreased yield, average price, ratio of mid-high grade leaves and output value of tobacco. This indicated that suitable exogenous hormones could achieve high potassium and low nicotine content, resulting in the improvement of quality, yield and output value of flue-cured tobacco in East Gansu. |
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