| Experiments in pot and field were carried out during 2001-2002 to study the effect of different rates and types of phosphorus fertilizer on biological characteristics, physiological characteristics, yield, and quality of flue-cured tobacco on cinnamon soil with NC89 at XiangCheng tobacco company henna province. The results were as follows: 1. Effect of different phosphorus application rate on the growth of flue-cured tobacco.Within the range of 0-123kg/hm2 phosphorus, phosphorus improve the biological characteristic and physiological characteristic of the tobacco plants distinctly. The function was diminished when the amount of phosphorus fertilizer utilization was over 123kg/hm2.Phosphorus reduced the density of the nitrogen in the root and leaf. The change law of the density of nitrogen is not very obvious in the stem. The absolute content of the nitrogen increases correspondingly in the root, stem and leaf. With the increase of phosphorus fertilizer application quantity, the density and absolute content of PiOs increase correspondingly gradually in the root ,stem and leaf. Application of the phosphorus fertilizer reduced the plain allocation proportion of the part on the ground of phosphorus.Proper phosphorus can increase the content of total sugar, reduce sugar, protein, phosphorus, and kalium of tobacco leaves. Decline the content of the nicotine, cl" and total nitrogen and promoted the absorption of Ca and B of the tobacco leaves. It doesn't influence obviously the absorption laws of Fe and Cu to apply the phosphorus fertilizer, the content of Mn and Zn have the downward trend after rises with the increase application of phosphorus quantity . The proper phosphorus can increase the content of aroma matter and organic acid. The effect of 82.5Kg/hm2 is the best.,41.25Kg/hm2is better. The phosphorus has two sides effect on fatty acid. The content of saturation fatty acid and unrighted acid are increase first and then decline with phosphorus increasing.The proper phosphorus fertilizer application can improve effectively yield, productionThe proper phosphorus fertilizer application can improve effectively yield, production value, first-class tobacco proportions and net income. 41.25Kg/hrn2 Phosphorus on the phosphorus efficiency and phosphorus fertilizer utilization ratio is biggest. Phosphorus efficiency and phosphorus fertilizer utilization ratio decline with the increase in amount of fertilizer.With the biological characteristic and physiological characteristic of the tobacco, 125.75/hm2 Phosphorus application quantity is better. But thought from the inherent quality of tobacco leaf , productivity effect and economy applies fertilizer , within the range of 41.25-82.5kg/hm2 phosphorus on the cinnamon soil of henan province is optimum combination. 2. Effect of different phosphorus types on the growth of flue-cured tobacco.In improving the biologic and physiological character of plants .triple super phosphate is the best. The calcium magnesium phosphate is the worst.The triple superphosphate can raise the content of total sugar, reduce sugar ,protein and P2Os,K+ of the tobacco, and decline the content of nicotine, cl" and total nitrogen . What's more, the triple super phosphate has raised the rate of total sugar and nicotine and K/C1. , ordinary superphosphate and two hydrogen ammonium of phosphoric acid are the better, the calcium magnesium phosphate is at last. The triple superphosphate has promoted of absorption of Fe, Mn and Zn of tobacco, sequence with ordinary superphosphate, two hydrogen ammonium of phosphoric acid and calcium phosphate. The absorption of Ga is in such order as calcium phosphate> ordinary superphosphate > triple superphosphate > two hydrogen ammonium. The absorption of Mg is in such order as calcium phosphate> triple superphosphat> ordinary superphosphat > two hydrogen ammonium.There is influence on the content of aroma material and organic sour of tobacco leaf with the different phosphorus fertilizer types. Seen from total amount of the aroma material and t...
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