This paper draws a clear picture of the development of pragmatic principles by clearing up the disordered situation of this field and tentatively formulates a hypothetical coordination model to solve the problems.

According to a generalized variational principle, which relaxes the inter element continuity requirements, a generalized hybrid degenerated shell element was first formulated by introducing incompatible modes.

In accordance with the characteristics of fractured- vuggy carbonate reservoir,based on the analysis of reser- voir features and the fracture-cave combination pattern, the flow mechanism and connectivity among reservoir space has been first discussed in this paper.

The paper introduced the biological characteristics of several main pot cultured tangerines and the combination pattern of polychrome potted tangerine briefly,and the culture techniques of each combination such as grafting,fertilizer and water management,pruning,flower promotion and retention, fruit retention,pets and diseases controlling,pattern,maintenance in ornamental period were elaborated.