| 1 | At the end of this thesis, the case of potato industry in Dingxi is discussed to approve the argument. | |
| 2 | The top soil properties of Huangmian soil under lucerne grown for many years were compared with those of soil under conventional tillage in Dingxi. | |
| 3 | The problems which dingxi met in its industrialization process had been solve by using some strategy such as Information Sharing, joint-stock, branding, and set up the sale network. | |
| 4 | 通过对定西马铃薯加工业的现状，供应链优化的条件，马铃薯加工业现存供应链条的弱势的分析，论证实施供应链管理的可行性与必要性。 This paper is a study on the feasibility and necessity of application of supply-chain via analysis on advantage of supply-chain and weakness of current supply-chain in potato process in Dingxi. | |
| 5 | According to climate data(1970-2000) in the northern farming and pastoral area, the research analyzed the climate change cycle, trend and grassland climate productivityabout 30 years. |
