Effect of supplying P to a portion of the soybean root system on root growth and P uptake kinetics 1
Effect of supplying P to a portion of the soybean root system on root growth and P uptake kinetics 1
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DOI：
10.1080/01904168309363154
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发表时间：
1983-10
影响因子：
2.1
通讯作者：
C. M. Borkert;S. A. Barber
中科院分区：
文献类型：
--
作者：
C. M. Borkert;S. A. Barber
摘要 了解向大豆 (Glycine max L. Merr) 根系部分供应磷对磷流入动力学和根系生长的影响对于开发磷肥施用实践以实现肥料的高效利用非常重要。本研究的目的是确定限制根系部分磷供应对植物磷状态、根系生长和磷流入动力学的影响。在受控气候室中进行了两个溶液实验。磷流入动力学是在 25 日龄的大豆植物上测定的，这些大豆植物的 100%、75%、50%、25% 和 12.5% 的根最初暴露于磷。磷流入动力学也在 25 日龄的植物上进行了测量，这些植物在确定磷流入动力学之前的最后 1、2、4 和 6 天都处于缺磷状态，以便将植物联系起来。 P 状态到 P 流入动力学。减少根部供磷的部分会减少磷的吸收。这导致植物磷浓度降低，与 3.41 倍的增加有关...
Abstract Knowledge of the effect of supplying P to portions of the soybean (Glycine max L. Merr) root system on P influx kinetics and root growth is important in developing P fertilizer placement practices for efficient fertilizer use. The objective of this research was to determine the effect of restricting P supply to portions of the root system on plant P status, root growth, and P influx kinetics. Two solution experiments were conducted in a controlled climate chamber. Phosphorus influx kinetics were determined on 25‐day‐old soybean plants that had been grown with 100, 75, 50, 25, and 12.5% of their roots initially exposed to P. Phosphorus influx kinetics were also measured on 25‐day‐old plants that had been P‐starved for the last 1, 2, 4, and 6 days prior to the determining P influx kinetics in order to relate plant P status to P influx kinetics. Reducing the portion of the roots supplied with P reduced P uptake. This resulted in a reduction in plant P concentration and was related to a 3.41‐fold inc...