
Study on domestic market integration of oil crops
Fu-xing LIU, Ke-xin WANG, Lu ZHANG, Zhong-chao FENG
CHINESE JOURNAL OF OIL CROP SCIENCES ›› 2022, Vol. 44 ›› Issue (5) : 957-965.
Study on domestic market integration of oil crops
Market integration is an important index to measure the efficiency of market mechanism. Studying the spatial market integration relationship of domestic oil crops is helpful to grasp the operation of market macro-scopically, and is of great significance to optimize regional division of labor and improve the efficiency of resource allocation. Taking rapeseed, peanut and sesame as examples, this paper systematically analyzes the spatial market integration of domestic oil crops by using Johansen co-integration analysis, vector error correction model and Granger-causality test. The results show that in the long run, the market prices of rapeseed, peanut and sesame are closely related, and there is a long-term integration relationship in the domestic oil crop market. In the short run, the degree of integration of domestic oil crop market is relatively high. According to the adjustment speed, peanut, rapeseed and sesame are in the order of high to low. From the perspective of causality, there is a two-way causality between the market prices of 70% rapeseed, 57.14% peanut and 30% sesame, which indicates that the market price information is not completely symmetrical. In order to improve the degree of market integration of domestic oil crops, this paper puts forward suggestions on improving the market environment, perfecting the construction of information platform and strengthening the construction of modern logistics system.
oil crops / market integration / co-integration test / vector error correction mode / Granger-causality test {{custom_keyword}} /
Table 1 Descriptive statistical results表1 描述性统计结果 |
统计指标 Statistical indicators | 平均值 Mean | 标准差 Standard error | 最小值 Maximum | 最大值 Minimum | 样本数 Sample size | |
---|---|---|---|---|---|---|
油菜籽 Rapeseed | 江苏 Jiangsu | 5058.47 | 948.18 | 3115.32 | 6851.42 | 1430 |
安徽 Anhui | 5029.68 | 933.25 | 3205.74 | 7194.32 | 1430 | |
湖北 Hubei | 5060.61 | 897.83 | 3282.74 | 7236.12 | 1430 | |
湖南 Hunan | 5057.10 | 932.17 | 3216.56 | 6895.04 | 1430 | |
四川 Sichuan | 5584.38 | 821.42 | 4114.83 | 7646.21 | 1430 | |
花生 Peanut | 河北 Hebei | 6074.23 | 1149.70 | 4036.76 | 9700.00 | 445 |
江苏 Jiangsu | 6282.90 | 1135.02 | 3876.21 | 10550.00 | 445 | |
安徽 Anhui | 5922.56 | 1156.67 | 3642.96 | 10850.00 | 445 | |
山东 Shandong | 5788.21 | 1172.43 | 3635.92 | 9700.00 | 445 | |
河南 Henan | 5865.49 | 1123.96 | 3836.85 | 9750.00 | 445 | |
湖北 Hubei | 6896.03 | 6878.87 | 3674.35 | 95616.65 | 445 | |
广东 Guangdong | 6493.55 | 1137.82 | 4490.80 | 11400.00 | 445 | |
广西 Guangxi | 6807.90 | 1258.52 | 4458.49 | 10950.00 | 445 | |
芝麻 Sesame | 天津 Tianjin | 9018.12 | 1362.63 | 7347.22 | 16700.00 | 298 |
江西 Jinagxi | 12939.23 | 1914.73 | 10245.06 | 17701.70 | 298 | |
山东 Shandong | 9001.29 | 1399.69 | 7215.23 | 16600.00 | 298 | |
湖北 Hubei | 9482.56 | 1425.57 | 7512.31 | 16000.00 | 298 | |
广西 Guangxi | 9471.99 | 1363.41 | 7745.61 | 16800.00 | 298 |
Table 2 ADF test results of rapeseed, peanut and sesame market price series表2 油菜籽、花生和芝麻市场价格序列ADF检验结果 |
油料作物 Oli crop | 省份 Provinces | 检验形式(C,T,K) Test form(C,T,K) | ADF检验值 ADF Test value | 5%的临界值 5% Critical value | P值 P value | 检验结果 Test results |
---|---|---|---|---|---|---|
油菜籽 Rapeseed | 安徽 Anhui | (C,T,3) | -6.105 310 | -3.412 965 | 0.0000*** | 平稳 Stable |
湖北 Hubei | (C,T,3) | -6.722 724 | -3.412 965 | 0.0000*** | 平稳 Stable | |
湖南 Hunan | (C,T,3) | -5.978 537 | -3.412 965 | 0.0000*** | 平稳 Stable | |
江苏 Jiangsu | (C,T,3) | -6.245 145 | -3.412 965 | 0.0000*** | 平稳 Stable | |
四川 Sichuan | (C,T,3) | -7.187 350 | -3.412 965 | 0.0000*** | 平稳 Stable | |
花生 Peanut | 江苏 Jiangsu | (C,T,2) | -6.306 398 | -3.420 022 | 0.0000*** | 平稳 Stable |
安徽 Anhui | (C,T,2) | -5.879 249 | -3.420 022 | 0.0000*** | 平稳 Stable | |
山东 Shandong | (C,T,2) | -5.860 353 | -3.420 022 | 0.0000*** | 平稳 Stable | |
河南 Henan | (C,T,5) | -4.082 361 | -3.420 092 | 0.0072*** | 平稳 Stable | |
河北 Hebei | (C,T,5) | -4.091 833 | -3.420 092 | 0.0069*** | 平稳 Stable | |
广东 Guangdong | (C,T,7) | -12.48 207 | -3.420 163 | 0.0000*** | 平稳 Stable | |
广西 Guangxi | (C,T,5) | -4.104 876 | -3.420 092 | 0.0066*** | 平稳 Stable | |
湖北 Hubei | (C,T,8) | -3.991 522 | -3.420 163 | 0.0096*** | 平稳 Stable | |
芝麻 Sesame | 江西 Jiangxi | (C,T,10) | -10.32 459 | -3.425 616 | 0.0000*** | 平稳 Stable |
山东 Shandong | (C,T,3) | -10.46 622 | -3.425 184 | 0.0000*** | 平稳 Stable | |
湖北 Hubei | (C,T,2) | -9.213 391 | -3.425 132 | 0.0000*** | 平稳 Stable | |
广西 Guangxi | (C,T,3) | -10.66 795 | -3.425 184 | 0.0000*** | 平稳 Stable | |
天津 Tianjin | (C,T,3) | -9.767 698 | -3.425 184 | 0.0000*** | 平稳 Stable |
Table 3 Long term integration test results of rapeseed market表3 油菜籽市场长期整合检验结果 |
市场 Market | 江苏 Jiangsu | 安徽 Anhui | 湖北 Hubei | 湖南 Hunan |
---|---|---|---|---|
安徽 Anhui | 0.00234* | |||
湖北 Hubei | 0.0052*** | 0.0113*** | ||
湖南 Hunan | 0.0087*** | 0.0120*** | 0.0024* | |
四川 Sichuan | 0.0032** | 0.0045** | 0.0076*** | 0.0045*** |
Table 4 Long term integration test results of peanut market表4 花生市场长期整合检验结果 |
市场 Market | 湖北 Hubei | 江苏 Jiangsu | 安徽 Anhui | 山东 Shandong | 河南 Henan | 河北 Hebei | 广东 Guangdong |
---|---|---|---|---|---|---|---|
江苏 Jiiangsu | 0.0509*** | ||||||
安徽 Anhui | 0.0508*** | 0.0151*** | |||||
山东 Shandong | 0.0446*** | 0.0163*** | 0.0289*** | ||||
河南 Henan | 0.0511*** | 0.0215*** | 0.0328*** | 0.0246*** | |||
河北 Hebei | 0.0515*** | 0.0204*** | 0.0322*** | 0.0270*** | 0.0268*** | ||
广东 Guangdong | 0.1635*** | 0.1814*** | 0.2164*** | 0.2328*** | 0.2767*** | 0.2213*** | |
广西 Guangxi | 0.0517*** | 0.0151*** | 0.0361*** | 0.0220*** | 0.0346*** | 0.0227*** | 0.2596*** |
Table 5 Long term integration test results of sesame market表5 芝麻市场长期整合检验结果 |
市场 Market | 天津 Tianjin | 江西 Jiangxi | 山东 Shandong | 湖北 Hubei |
---|---|---|---|---|
江西 Jiangxi | 0.2098** | |||
山东 Shandong | 0.0131** | 0.2424*** | ||
湖北 Hubei | 0.0294*** | 0.2486*** | 0.0082 | |
广西 Guangxi | 0.0157** | 0.2133*** | 0.0227*** | 0.0155*** |
Table 6 Short term integration test results of rapeseed market表6 油菜籽市场短期整合检验结果 |
市场 Market | 江苏 Jiangsu | 安徽 Anhui | 湖北 Hubei | 湖南 Hunan |
---|---|---|---|---|
安徽 Anhui | 0.0070*** | |||
湖北 Hubei | 0.0258*** | 0.0864*** | ||
湖南 Hunan | 0.0214*** | 0.0550** | -0.0528*** | |
四川 Sichuan | 0.0105*** | 0.0150*** | 0.0195*** | 0.0131*** |
Table 7 Short term integration test results of peanut market表7 花生市场短期整合检验结果 |
市场 Market | 湖北 Hubei | 江苏 Jiangsu | 安徽 Anhui | 山东 Shandong | 河南 Henan | 河北 Hubei | 广东 Guangdong |
---|---|---|---|---|---|---|---|
江苏 Jiangsu | -0.0323*** | ||||||
安徽 Anhui | 0.0182*** | -0.0799*** | |||||
山东 Shandong | 0.0813*** | -0.0876*** | -0.1010*** | ||||
河南Henan | 0.1025*** | -0.0611*** | 0.0234*** | 0.1361*** | |||
河北 Hebei | 0.0930*** | -0.0702*** | -0.0103*** | 0.1874*** | -0.0759*** | ||
广东 Guangdong | 0.0870*** | -0.0365*** | 0.5571*** | -0.6874*** | 0.8237*** | 1.3277*** | |
广西 Guangxi | 0.0995*** | -0.3081*** | 0.0335*** | 0.0150*** | -0.0485*** | -0.0418*** | 2.8771*** |
Table 8 Short term integration test results of sesame market表8 芝麻市场短期整合检验结果 |
市场 Market | 天津 Tianjin | 江西 Jiangxi | 山东 Shandong | 湖北 Hubei |
---|---|---|---|---|
江西 Jiangxi | -1.2120*** | |||
山东 Shandong | -0.1982*** | -0.4507*** | ||
湖北 Hubei | -0.3217*** | -1.0010*** | — | |
广西 Guangxi | 0.1229*** | 0.1333*** | 0.0724*** | 0.1297*** |
Table 9 Granger-causality test results of rapeseed market表9 油菜籽市场格兰杰因果关系检验结果 |
市场 Market | 江苏 Jiangsu | 安徽 Anhui | 湖北 Hubei | 湖南 Hunan |
---|---|---|---|---|
安徽 Anhui | ← | |||
湖北 Hubei | ←→ | → | ||
湖南 Hunan | ←→ | ←→ | ← | |
四川 Sichuan | ←→ | ←→ | ←→ | ←→ |
Table 10 Granger-causality test results of peanut market表10 花生市场格兰杰因果关系检验结果 |
市场 Market | 湖北 Hubei | 江苏 Jiangsu | 安徽 Anhui | 山东 Shandong | 河南 Henan | 河北 Hebei | 广东 Guangdong |
---|---|---|---|---|---|---|---|
江苏 Jiangsu | ←→ | ||||||
安徽 Anhui | → | — | |||||
山东 Shandong | ←→ | ← | ← | ||||
河南 Henan | → | ←→ | ←→ | ←→ | |||
河北 Hebei | → | ← | ←→ | ←→ | ←→ | ||
广东 Guangdong | ←→ | ←→ | → | ←→ | → | ← | |
广西 Guangxi | ←→ | ← | ← | ←→ | ←→ | ←→ | ←→ |
Table 11 Granger-causality test results of sesame market表11 芝麻市场格兰杰因果关系检验结果 |
市场 Market | 天津 Tianjin | 江西 Jiangxi | 山东 Shandong | 湖北 Hubei |
---|---|---|---|---|
江西 Jiangxi | ← | |||
山东 Shandong | — | ← | ||
湖北 Hubei | ←→ | ← | — | |
广西 Guangxi | → | ←→ | → | ←→ |
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