Studies on rhizome and root system structure of Phyllostachys nidularia Munro

By the method of layered mining and tracked rhizome,the rhizome and root system structure of Phyllostachys nidularia Munro was studied.The results showed that: the relative age of rhizome was well estimated according to the morphological character of rhizome;65% of the rhizomes were healthy rhizomes from 4 to 6 years old,the structure of age of rhizome-root was reasonable;88% of the rhizomes distributed at the depth of 0-20 cm in the soil layer,the roots were mainly distributed at the depth of 0-40 cm in the soil layer and 3 to 6 years old rhizome.Healthy bud and winter shoot were mainly distributed at the healthy rhizomes and the weak bud were mainly distributed at the young rhizomes,80% of buds at the rhizomes from 3 to 6 years old were empty bud root;therefore,better managing the soil layer of 0-20 cm depth and nurturing new rhizome,protecting healthy rhizome,weeding out old rhizome were good for the growth of rhizome and yield of shoots.