Abstract: The interplanting of Chinese goldthread(Coptis chinensis)within Chinese fir(Cunninghamia lanceolata)and Chinese cedar(Cryptomeria fortunei)stands is a common practice in hilly areas of southeastern China.(1)the complex interplanting ecosystem has a considerably higher utilization rate of light-energy and its productivity is higher than pure stands of all three species;(2)the forest-medicinal plant interplanting system provides better environmental conditions for the growth of Chinese goldthread and consequently results in its higher yield;(3)compared with traditional cultivation with artificial shading, the forestmedicinal plant interplanting system can save shading material by 52.5m³ per ha, labor hours by 28.7%, and incroase net income by 62.4%, labor productivity by 30.3%. The interplanting techniques of Chinese fir(or Chinese cedar)and Chinese goldthread are also briefly discussed.

Key words: sulfur-coated controlled release urea, polymer-coated controlled release urea, yield, quality, nitrogen use efficiency