In this article,investigations were made on ecological characteristics,the value and the resource condition of Chimonobambusa neopurpurea in Ebian County,and a description was given of technical main points of planting Chimonobambusa neopurpurea.

As a principal rusticity landscape,the farmhouse forests in western Sichuan province(FFWS) might be defined as a complex habitation mode or farming type that combines production,daily life and landscape.Meanwhile,the core of FFWS is trees and bamboo,and the main inscapes of this landscape are water,houses and fields.24 sample sites were chosen to analyze the foundation of FFWS,and to investigate their community characteristics such as community type,plane and vertical structures etc..The results indicate that ① the plants in FFWS might be classified into 5 groups of vegetation types,11 vegetation types and 107 formations;② the main vegetation types of FFWS are evergreen broad-leaved forests and bamboo stands,and the frequency is 25% and 32%,respectively;③ the plane structure of communities is characterized by the pure plantations,with the low diversity of the plants and monotonous landscape,and the dominant plants are metasequoia(Metasequoia glyptostroboides),or cedar(Cedrus deodara),or affinis bamboo(Neosinocalamus Keng f.);④ the vertical structure of DFWS might be divided into two groups,one is mono-layer type,and the other is multilayer type.Arbor forest is the dominating community of the multilayer type,by contrast,the frequency of shrub-grass and mono-layer grass is lower(4% and 3%,respectively).The commonly-seen vertical structures of communities are arbor-shrub-grass,arbor-shrub and arbor-grass,among which the arbor-grass shows the highest frequency(38%).

The mathematical model of the relationship between N,P,K and cellulose content of Eucalyptus grandis Pulpwood was founded by means of the method of quadratic general rotational combine design.The quadratic regression models were simulated closely with reality by testing.Applying rational amount of N and K could increase cellulose content,and P application couldn't help the cellulose content increase;.There was a mutually beneficial relation between N and P,and middle dosage of N and P could get a high value of cellulose content.High elosage of K and low dosage of N or high dosage of N and low dosage of K could help the;raise;of cellulose content.The combination of middle dosage of P and high dosage;of K was recommended.When the factors of density,N,P,K were in the confidence limit of 95%,the excellent cultivated pattern for high yield as well as high quality was the following:planting density was 152-153 N/667m~2, N was 54-61 g/N,P is 48-49g/N,K was 45-52 g/N.