• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Plant Nutrition Colloquium >Towards fertilizer recommendations for phosphorus based on 0.01 M CaCl_2
【24h】

Towards fertilizer recommendations for phosphorus based on 0.01 M CaCl_2

机译：基于0.01米CaCl_2的磷肥推荐施肥

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Fertilizer recommendations are generally based on the correlation between soil test results and crop yield or nutrient uptake. With the increasing awareness (and legislation) that the excessive use of fertilization leads to environmental problems, there is a growing need to further optimize fertilizer recommendations, especially for P. In The Netherlands fertilizer recommendations have been established based on two different extraction methods for phosphorus (P): an ammonium lactate- acetic acid extraction (PAL) and a water extraction (Pw). For several reasons, it has been suggested that 0.01 M CaG_2 would be a good basis for fertilizer recommendations. To implement this "new" extraction method, a fertilizer recommendation must be obtained based onthe new soil test results. The cheapest and quickest way is to correlate the old with the new soil test results. This is, however, not possible due to a lack of correlation between P-CaCl_2 and PAL and it introduces a large error in the translation of P-CaCl_2 to Pw. Following the general approach of correlating soil test results to crop yield and nutrient uptake, the literature shows a wide range in correlation coefficients. This variation can be explained only if the processes behind this correlationare taken into account - the mechanistic approach. To arrive at a generally applicable fertilizer recommendation, there is thus a need to obtain a better insight in the relation between P-CaCl_2 and the dominant processes involved in translocation of P from soil particles to the plant and the corresponding reaction rates.
机译：肥料建议通常基于土壤试验结果与作物产量或营养吸收之间的相关性。随着提高意识（和立法），过度使用施肥导致环境问题，越来越需要进一步优化肥料建议，特别是对于P.在荷兰施肥建议，基于两种不同的磷的提取方法建立了肥料建议（P）：乳酸铵萃取（PAL）和水萃取（PW）。由于几个原因，已经提出了0.01米CAG_2将是肥料建议的良好基础。为了实现这种“新”提取方法，必须基于新的土壤测试结果获得肥料推荐。最便宜和最快的方式是与新的土壤测试结果相关联。然而，由于P-CACL_2和PAL之间的相关性缺乏相关性，这是不可能的，并且它在P-CACL_2的翻译中引入了大的误差。在将土壤试验结果相关的一般方法之后，作物产量和营养吸收，文献显示了相关系数的宽范围。只有当考虑到这种相关性背后的过程时，才可以解释这种变化 - 机械方法。为了达到一般适用的肥料推荐，因此需要获得P-CaCl_2与P-CaCl_2之间的关系的更好的见解，以及从土壤颗粒到植物的P易位的显性过程和相应的反应速率。

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