An automatic control system based on the OMRON displacement sensor and PLC is introduced in this paper,which is applied to monitor the main parts of tobacco redrying machine continuously for achieving the automatic alarm and control of system faults ,consummation of the automatic control functions and forecast of machine states.

Study on the influencing factors of polyphenol oxidase and ascorbic oxidase activities of flue-cured tobacco leaves;

A reversed-phase high performance liquid chromatographic(RP-HPLC) method for the determination of carotenoids in flue-cured tobacco leaves was developed.

field and solution culture experiments were conducted with K326 from2002 to 2003 to study the effect of the rotted sesame cake fertilizer amino acid and different nitrogen forms and ratios on carbon-nitrogen metablism of flue-cured tobacco leaves in Henan Agricultural University and Key Discipline and Open Laboratory of Agricultural Biological and Engineering Technique.

The application of predictive controller based on fuzzy internal model to the tobacco redrying;

Tobacco redrying is a re-curing process after the tobacco drying for the first time, which has direct impact on the production of cigarette industries.