| 以水稻为主的种植系统对土壤有机质状况的影响 |
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| 作者姓名： | XIAO Yong-Lan ZHANG Yang-Zhu HU Rui-Zhi HUANG Yun-Xiang ZHOU Qing YUAN Zheng-Ping YANG Dong-Ping SHU Li |
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| 摘 要： | A long-term simulation experiment was carried out to study the effect of rice-based cropping system, green manure and ground-water level on soil organic matter. Soil organic matter content increased when upland soil was puddled and cropped under submerged conditions. Among all treatments, soil organic matter contents in the treatments of rice-rice-flooded fallow in winter (WF) were the highest, those in the treatments of rice-rice-astragalus (WG) came the second, and those in the treatments of rice-rice-rape (WR) were the lowest. At the same rate of green manure application, the degrees of organo-mineral complexing in soils of treatments WG and WR were higher than those of treatment WF. After 9-year rice cultivation, the state of combination of humus in heavy fraction varied with treatments. The relative content of loosely bonded humus decreased in the order of WR > WG > WF, and it correlated significantly with Se availability.
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| 关 键 词： | 有机金属矿物 配位数 有机物 基本农田系统 硒利用率 土壤肥力 |
Effect of rice-based cropping system on organic matter status in soils |
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| XIAO Yong-Lan,ZHANG Yang-Zhu,HU Rui-Zhi,HUANG Yun-Xiang,ZHOU Qing,YUAN Zheng-Ping,YANG Dong-Ping,SHU Li.Effect of rice-based cropping system on organic matter status in soils[J].Pedosphere,1997,7(4):349-354. |
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| Authors: | XIAO Yong-Lan ZHANG Yang-Zhu HU Rui-Zhi HUANG Yun-Xiang ZHOU Qing YUAN Zheng-Ping YANG Dong-Ping and SHU Li |
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| Institution: | Department of Natural Resources, Hunan Agricultural University, Changsha 410128 (China);Department of Natural Resources, Hunan Agricultural University, Changsha 410128 (China);Department of Natural Resources, Hunan Agricultural University, Changsha 410128 (China);Department of Natural Resources, Hunan Agricultural University, Changsha 410128 (China);Department of Natural Resources, Hunan Agricultural University, Changsha 410128 (China);Department of Natural Resources, Hunan Agricultural University, Changsha 410128 (China);Soil and Fertilizer Center of Northern District of Yueyang Municipality, Yueyang 414000 (China);The Government of Yongding District of Zhangjiajie Municipality, Zhangjiajie 417000 (China) |
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| Abstract: | A long-term simulation experiment was carried out to study the effect of rice-based cropping system, green manure and ground-water level on soil organic matter. Soil organic matter content increased when upland soil was puddled and cropped under submerged conditions. Among all treatments, soil organic matter contents in the treatments of rice-rice-flooded fallow in winter (WF) were the highest, those in the treatments of rice-rice-astragalus (WG) came the second, and those in the treatments of rice-rice-rape (WR) were the lowest. At the same rate of green manure application, the degrees of organo-mineral complexing in soils of treatments WG and WR were higher than those of treatment WF. After 9-year rice cultivation, the state of combination of humus in heavy fraction varied with treatments. The relative content of loosely bonded humus decreased in the order of WR > WG > WF, and it correlated significantly with Se availability. |
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| Keywords: | degree of organo-mineral complexing organic matter rice-based cropping system Se availability |
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