Effects of Green Manure and Carbonized Rice Husk on Soil Properties and Rice Growth
Effects of Green Manure and Carbonized Rice Husk on Soil Properties and Rice Growth
复制标题
绿肥和炭化稻壳对土壤性质和水稻生长的影响
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
Y. Ok
中科院分区：
文献类型：
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作者：
Weon;K. Seong;Jong;I. Oh;Young;Y. Ok
绿色肥料作物的种植对土壤质量和农业系统的可持续性具有重要作用。然而，加入绿色肥料作物可能会引起关注，因为它会导致淹没土壤的强烈还原条件。研究了稻壳炭对水稻生长发育的影响。在稻田中使用绿色肥料混合物（毛豌豆+黑麦）栽培。2007年10月至2008年10月，在韩国国家作物科学研究所（NICS）的水稻土（Shinheung系列，细壤质，混合，非酸性，Aeric Fluventic Haplaquepts的中质家族）中进行田间试验。试验设施稻壳、不施稻壳和常规施肥3个处理。这些处理被细分为整个掺入和地上去除绿色肥料混合物。在移栽后第8天和第37天（DAT），与不施用相比，施用稻壳后的氧化还原电位（Eh）更高。在17日和49日龄时，施用稻壳+全绿色肥处理土壤中铵态氮含量最高，水稻株高和分蘖数与土壤中铵态氮含量相似。施用稻壳处理与不施用稻壳处理的水稻产量差异不显著。但在水稻收获后，施用稻壳改善了土壤的容重和孔隙度等物理性质。因此，本研究结果表明，稻壳可以作为土壤改良剂用于绿色有机肥-水稻混作系统的环境友好型水稻生产。
The cultivation of green manure crops plays an important role in soil quality and sustainability of agricultural system. However, the incorporation of green manure crops may be of concern because it can lead to strongly reducing conditions in the submerged soil. This study was conducted to evaluate the effects of rice husk carbon on rice (Oryza sativa L.) cultivation using green manure mixtures (hairy vetch + rye) in rice paddy. Field experiments were conducted in rice paddy soil (Shinheung series, fine loamy, mixed, nonacid, mesic family of Aeric Fluventic Haplaquepts) at the National Institute of Crop Science (NICS), Korea from October 2007 to October 2008. The experiments consisted of three treatments: application or no application of carbonized rice husk, and conventional fertilization. These treatments were subdivided into whole incorporation and aboveground removal of green manure mixtures. The redox potential (Eh) was higher upon application of the carbonized rice husk when compared to no application at 8 and 37 days after transplanting (DAT). The ammonium-N (NH 4- N) in soil was highest upon the application of carbonized rice husk + whole green manure incorporation at 17 and 49 DAT. Plant height and tiller number of rice were similar to the NH 4- N concentration in soil. Rice yields of application and no application of carbonized rice husk treatment were not significant. However, application of carbonized rice husk improved the soil physical properties such as bulk density and porosity after rice harvest. Therefore, the results of this study suggest that carbonized rice husk could be used as soil amendment for environmentally-friendly rice production under a green manure mixture-rice cropping system.