碩士 / 國立臺灣大學 / 農業經濟學研究所 / 101 / Hard clam has been one of the principal culture shellfishes in Taiwan all along and its yield is No.1 among culture shellfishes. There are 4 main cultivation counties/city in Taiwan, respectively Changhua County, Yunlin County (No.1 in yield and cultivation area), Chiayi County and Tainan City. About 70% of hard clams come from Yunlin County marked as an agriculture capital. It is called a “hard clam kingdom” because its output value has been more than 3 billion in recent years. As for the clam cultivation and production technology efficiency, Guo(2005) indicates in the analysis that Changhua County comes out top and Chiayi County ranks the second, but Yunlin County is far behind from 2000 till 2003. Yunlin County is selected to analyze the clam cultivation and production technology efficiency and influencers in the study.
To begin with, analyzed is the clam cultivation and production technology efficiency in Yunlin County with data envelope analysis (DEA); then, explored are the extrinsic factors influencing the production technology efficiency with the Tobit regression. The research results are as follows. (1) 57.38% of 61 hard clam farmers have increasing returns to scale. (2) The major operation cost of hard clam cultivation includes personnel expenditure (27%), rent of soil (23%), seedling expense (19%), feed expense (17%), pond arrangement expense (6%), water and electricity expense (6%) and cost of repairs (2%). (3) The average of the clam cultivation and production technology efficiency is 0.709 and 78.69% of farmers are inefficient. (4) When the cultivation area is 2-3 hectares with the stocking density 1.3-1.4 m/ha and the fish farm is below 20 years old, the production technology efficiency is the best, so it is suggested that the operators maintain such production environment.
The Tobit regression shows that "scale of fish farm" and "stocking density" have significant positive influence, "age of fishpond" has the significant negative influence and "age", "level of education" and "cultivation experience" have no significant correlation.
Keyword: Hard Clam, Clam Cultivation, Production Technology Efficiency, Data Envelope Analysis (DEA), Tobit Regression
| Identifer | oai:union.ndltd.org:TW/101NTU05412021 |
| Date | January 2013 |
| Creators | Shing-Yu Huang, 黃欣瑜 |
| Contributors | Lih-Chyun Sun, 孫立群 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 85 |
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