| Effects of “3414” fertilization program and fertilizer recommendation for flue cured tobacco in east Gansu Province |
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| DOI：10.7606/j.issn.1000-7601.2013.05.032 |
| Key Words: flue cured tobacco “3414” fertilization program fertilizer effect function fertilization parameter |
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| Abstract: |
| The experiment was conducted in Zhengning County, Gansu Province to study the effects of “3414” fertilization program and fertilizer recommendation for flue cured tobacco. The results showed that the one factor quadratic models could reflect well the relationship between yield and fertilization rate. The effect functions of N and P were typical models, while the effect function of K was a typical model. According to the economic analysis, the optimal application rate of N, P and K for flue cured tobacco was 56 kg·hm-2, 78 kg·hm-2 and 270 kg·hm-2, respectively. |
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