| CUMULATIVE EFFECTS OF DIFFERENT CULTIVATING PATTERNS ON PROPERTIES OF ALBIC SOIL IN SANJIANG PLAIN |
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| 作者姓名： | YUAN Zhao-hua LU Xian-guo ZHOU Jia |
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| 作者单位： | 1. Northeast Institute of Geography and Agroecology，Chinese Academy of Sciences，Changchun 130012，P. R. China; 2. College of Resources and Environmental Sciences，Northeast Agricultural University，Harbin 150030，P. R. China; 3. Graduate School of Chinese Academy of Sciences，Beijing 100049，P. R. China; 4. College of Life and Environment Science，Harbin Normal University，Harbin 150025，P. R. China |
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| 基金项目： | Under the auspices of the National Natural Science Foundation of China (No.40501030) and Knowledge InnovationProgram of Chinese Academy of Sciences (No. KZCX3-SW-NA-01) |
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| 摘 要： | 1INTRODUCTION Albic soil is one of the main soils with low yield in the Sanjiang Plain, with an area of 200×103ha, accounting for 19% of the total area, among which 88.4×103ha is farmland, being 25.4% of the total area of farmland in this region. The albic soil occupies 44% of total area of farmland in the state-owned farms of Heilongjiang Province.Therearetworeasonsforthe lowyield ofalbic soil. Firstly, the upper layer of the soil is thin, only 10- 20cm for low yield field and 20- 25c…
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| 关 键 词： | 耕作模式 土壤特性 三江平原 关联法 |
| 文章编号： | 1002-0063（2006）02-0133-08 |
| 收稿时间： | 2006-01-06 |
Cumulative effects of different cultivating patterns on properties of albic soil in Sanjiang Plain |
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| YUAN Zhao-hua LU Xian-guo ZHOU Jia.CUMULATIVE EFFECTS OF DIFFERENT CULTIVATING PATTERNS ON PROPERTIES OF ALBIC SOIL IN SANJIANG PLAIN[J].Chinese Geographical Science,2006,16(2):133-140. |
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| Authors: | Zhao-hua Yuan Xian-guo Lu Jia Zhou |
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| Institution: | (1) Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, 130012 Changchun, P. R. China;(2) College of Resources and Environmental Sciences, Northeast Agricultural University, 150030 Harbin, P. R. China;(3) Graduate School of Chinese Academy of Sciences, 100049 Beijing, P. R. China;(4) College of Life and Environment Science, Harbin Normal University, 150025 Harbin, P. R. China |
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| Abstract: | This paper studied the cumulative effects of different cultivating patterns on the properties of albic soils in the Sanjiang Plain using correlation analysis. The results showed that the physical and chemical properties of the albic soil changed greatly when it was cultivated as farmland. As for physical properties of the soil, bulk density and specific gravity increased gradually, the porosity and field capacity decreased gradually year by year, but they increased after being abandoned. As for chemical properties, pH increased, organic matter and other nutrients decreased with increasing of the cultivating years. For the albic soil cultivated with forage, the cumulative effects were apparently strengthened with the increase of cultivating years, especially for the bulk density, total porosity, capillary porosity and capillary moisture capacity. Moreover, fertilization also had great effects on the albic soil. Applying magnetism ferti- lizer improved the physical properties such as bulk density, soil moisture and porosity, raised the utilization rate of nitrogen and phosphorus fertilizer. Compared with nutrient fertilizer, utilization of the magnetism fertilizer made production increase by 5.9%-13.9%. At the same time, using organic material and loosing the albic layer could improve not only the physical, chemical and biological properties of the cultivating layer, but also the ill properties of the albic layer, thus making organic carbon and heavy fraction carbon contents increase, and biological activity increase obviously. |
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| Keywords: | cultivating pattern albic soil soil property Sanjiang Plain |
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