Plot trials were carried out to study effects of three kinds of wine lees bio-organic manure on yield and quality of lettuce. The results showed that net photosynthetic rate, transpiration rate, and content of chlorophyll in function leaves of lettuce in early growth stage under wine lees bio-organic manure treatment were higher in promoting accumulation of photosynthate and yield of lettuce than those under composting manure or fertilizer treatment. Application of wine lees bio-organic manure also obviously improved activities of nitrate reductase in root and functional leaves of lettuce. Und...
