This article analyzes the causes for the gradually decrease of supply quantities of organic products based on the studies taken from 11 organic production enterprises in Yang County, Shaanxi Provence,China. The findings revealed that even though organic enterprises held a positive attitude towards organic agriculture production, they are mostly realizing no or small profits. The study determined that the current agricultural policy system in rural finance, financial project applications, regional marketing strategies, as well as the intensive use of agricultural land through intermediary for public welfare and agricultural technology popularization system are incomplete, which have limited support for the growth of organic production marketing enterprises. The article proposes that future organic agricultural product market research should start from the point of view of agricultural policy.
In this paper, we took up 20 buildings of Three bay building type from the Yuan and Ming Dynasty in Sichuan Province, and examined their architectural characteristics such as their plane dimensions, structural system, tokyou and climbing beams. The characteristics are summarized as follows.
1) About the appearance and plane of Three bay type
Three bay type is generally constructed as a built-up roof tile, with double doors in the middle at the front and thick wall (3 buildings) and thin wall (17 buildings) on both sides and back. The general plane is between the purlin 3 spans and between the crossbeam 3 or 4 spans, and is a square with a side length of about 12 meters to 15 meters. As for the inter-column dimensions, the ratio between the center and side of the front is about 2 to 3 times.
2) About the span and frame
Three bay type is based on a girder type in which a tokyou is placed on the pillars and a frame is built using beams and bundles between the pillars. It belongs to the frame form of North and Central China. The interior space has four pillars in the center and eaves with a width of 1 is surrounded around it. In the eaves, it is divided into three types, one-frame, two- frame, and three-frame system, based on the purlin girder span. The Moya is divided into three types, three-frame, four-frame and five-frame. It is common for Three bay type to have a two-frame system for the eaves and a four-frame system for the Moya.
3) About the tokyou and center-tokyou
In Three bay type, there are four types of tokyou, 3-stage, 2-stage, 1-stage, and overhanging beam, there are different from the ones on the front, both sides and back. The tokyou arrangement have 4 types. The first one uses a 3-stage on the front and 3-stage, 2-stage, 1-stage, overhanging beam on the both sides and back. The second one uses a 2-stage on the front and 2-stage, 1-stage, overhanging beam on the both sides and back. The third one uses a 3-stage on the front, both sides and back. The fourth one uses a 2-stage on the front, both sides and back.
4) About the climbing beam and the tail rafter of Tokyou
Some buildings of Three bay type use curved materials (climbing beams) as structural materials for the Moya and eaves. One is to use a thick diagonal material (tentative name: large climbing beam) assembled in the shape of a palm in the beam direction in the center of the attic of the Moya. The other is to use a curved material (tentative name: small climbing beam) for the tokyou on the side pillar, which connect the tokyou to the Moya girder in the attic of the eaves.