A Study on Development of Shiro and ProductivePotentialities of Tricholoma matsutake

s: A permanent experimental site was established in 1997 near Haitang village, Baoshan City, Yunnan Province, which is occupied about 1 hm2. Field observations for 58 shiros were conducted for 4 years. Results indicated that artificial facilitating measurements as a reserve, could improve development of shiro, which increased by 110.64% in fruitbody quantity and reduced by 12.6% in losing quantity. Two types of the shiro were divided by their formation time. normal type and late type, which were 58.6% and 41.1% of the total shiros, respectively. The normal type produced fruitbodies earlier, lasted for relative long period. The late type produced fruitbody late in August, lasted for relativey short terms. Based on the 6 shiros' observation through three years, the quantity of fruitbodies increased by 102.6%, yield increased by 112.5%. The highest yield is 1.28 kg per shiro in the site. The semi artificial simulating cultivation, which left some fruitbodies on ground for natural mature, could create new shiros and produce fruitbodies usually afer 2 3 years.