• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Soil Science and Plant Nutrition >Acidulated activation of phosphate rock enhances release, lateral transport and uptake of phosphorus and trace metals upon direct-soil application
【24h】

Acidulated activation of phosphate rock enhances release, lateral transport and uptake of phosphorus and trace metals upon direct-soil application

机译：磷酸盐岩的酸化活化增强释放，横向运输和直接土壤磷和痕量金属的吸收

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Phosphate rock (PR) was activated via acidulation with HCl, EDTA, and oxalic acid to enhance its reactivity. The release, lateral transport, and uptake of phosphorus (P) along with trace metals from pristine and activated PRs were investigated in a soil micro-block system over a period of 27days, using wheat (Triticum aestivum L.) plants. Significantly (p0.05) higher amounts of available soil P, Fe, Mn, and Zn were released from all the PRs after application to soil within first 9days of seedling transplantation, while the release of other trace metals (Cd, Co, Cr, Cu, Ni, and Pb) was minimal (1.2mg kg(-1)). On cumulative basis, APR-O (oxalic acid activated PR) was the most efficient amendment releasing 164% more available P, followed by APR-E (EDTA activated PR) releasing 130% more available P, compared to the pristine PR. Similar results were also observed in the release of available Fe, Mn, Zn, and other trace metals. The highest diffusive mass fluxes for available P, Mn, Fe, and Zn in soil were observed after 3days of seedling transplantation, which reduced subsequently. The uptake of P, Fe, Mn, and Zn by wheat plants was increased by 394%, 715%, 92%, and 91%, respectively, in APR-O application compared to the pristine PR, while it was increased by 280%, 188%, 16%, and 27%, respectively, in APR-E application compared to the pristine PR. Subsequently, APR-O and APR-E amendments resulted in enhanced shoot lengths, root lengths, shoot dry matter, and root dry matter contents of wheat plants. Hence, it was concluded that activation of PR with oxalic acid and EDTA prior to direct soil application may enhance the reactivity of PR and could serve as a cost-effect fertilization strategy for higher wheat crop production.
机译：通过用HCl，EDTA和草酸酸化活化磷酸盐岩（PR）以增强其反应性。在27天的土壤微块系统中，在27天的土壤微块系统中研究了磷（P）与痕量金属的释放，横向传输和摄取来自原始和活化的PRS的痕量金属，使用小麦（Triticum aestivum L.）植物。显着（p＆ 0.05）较高量的可用土壤P，Fe，Mn和Zn在幼苗移植的前9天内施加到土壤中，释放到土壤中，而其他痕量金属（CD，CO，Cr， Cu，Ni和Pb）最小（＆ 1.2mg kg（-1））。在累积的基础上，APR-O（草酸激活PR）是最有效的修正案释放164％以上的可用P，随后与原始PR相比，APR-E（EDTA活化PR）释放可用P.在释放可用Fe，Mn，Zn和其他痕量金属中也观察到类似的结果。在幼苗移植3天后观察到土壤中可用P，Mn，Fe和Zn的最高散热剂助熔剂，随后减少。与原始PR相比，小麦植物的P，Fe，Mn和Zn的摄取分别增加了394％，715％，92％和91％，而其分别增加了280％与原始公关相比，APR-E分别在APR-E申请中分别为188％，16％和27％。随后，APR-O和APR-E修正案导致小麦植物的芽长度，根长度，芽干物质和根状物干物质含量增强。因此，得出结论是，在直接土壤施用前用草酸和EDTA激活Pr的激活可以提高PR的反应性，并且可以作为更高小麦作物生产的成本效益施肥策略。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号