The tobacco biomass increased with the increase of P concentration in the soil.

随着向土壤中添加磷浓度的增加，烟草生物量呈增加趋势。

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By using pot tests, the effect of low-P stress on dark sun-cured tobacco endogenous hormone and root activities were studied during different growth stage.

通过盆栽试验和室内分析，研究低磷胁迫对晒红烟内源激素和根系活力的影响。

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A solution culture experiment was conducted to study the dynamics of dry matter accumulation and n, p, K absorption by flue-cured tobacco under different boron concentration.

采用溶液培养方法，研究了不同硼浓度下烤烟干物质积累动态和养分吸收动态变化特点。

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P. that voters everywhere were increasingly anti-tobacco.

CNN: McCain's Big Deal

P. candidates and spending record sums on Ermenegildo Zegna-clad lawyers, the once mighty tobacco lobby has lost almost all its clout in Congress.

CNN: McCain's Big Deal