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Mathematical Model of Normalization Cultivation for Flue cured Tobacco NC89

Zu Chaolong et al(Insititute of Tobacco,Anhui Academy of Agricultural Sciences,Fengyang,233100)  
The experimental results showed that nitrogen levels and interaction between the density and the number of reserved leaf were significant in yield.The yield of flue cured tobacco NC89 was as high as 1 817~2 625 kg/hm 2 with the treatment of the amount of the nitrogen application:58 5~70 95kg/hm 2;the density of plant:20 130~ 20 520 plants/hm 2 and the number of reserved leaf:19~21 leaves/plant.
【CateGory Index】: S572
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