Cultivation of high-yield,short rotation,medicinal plantation of Taxus wallichiana var. mairei

Aimed to overcome the slow-growing disadvantage of Taxus wallichiana var.mairei,trials for inter-planting in forest and field cultivation were conducted.A short rotation and high-yield cultivation method for medicine production purpose was resulted.On mountainous sites,grade Ⅰ or Ⅱ stands including land below the crown of the secondary broadleaf forest and the Chinese-fir plantation or east-facing,shady dry land could be considered for the plantation.The transmittance of crown in the areas should be 55%～60%.One-year-old high quality seedlings above 25 cm tall and 0.25 cm in diameter near the ground-level should be used.For high-yield,field cultivation,shading facility should be considered and seedlings of taller than 15 cm and greater than 0.15 cm in diameter near the ground should be applied.The appropriate density and sunlight transmittance ought to be 30 cm×30 cm and 50%,respectively.After planting,the young trees should be carefully tended,diseases and pests infestation well prevented,and N,P and K fertilizers properly applied.The short rotation and high-yield medicinal plantations of Taxus wallichiana var.mairei cultivated in the field and mountainous sites could begin harvesting branches,leaves,stems or the plant in autumn and winter 2～3 years and 3～4 years after planting,respectively.Winter should be the best season for cutting stems at the height of 15 cm.