It features extremely early-maturing, 50 days growth period, 1.5-2kg fruit weight, light green and smooth outer leaves, wide. thick and white stem, overlapped leafy head, tender yellow, few fibers, good taste, excellent quality, rapid growth, fast growth of heart, growing while heading, high resistance to heat, moisture and disease, suitable for summer and autumn cultivation in all regions of China, an ideal substitute for Early-maturing No.5. Sowing from April to October in the Jiangnan and the Yangtze River Basin, July to August in the north, about 4000 plants per Mu, fertilizer and water loving, apply enough base fertilizer, add compound fertilizer, heavy application of nitrogen fertilizer, harvest in time.