Eurasian Soil Science ( IF 1.4 ) Pub Date : 2022-04-20 , DOI: 10.1134/s1064229322060102 F. Nourgholipour 1 , M. M. Tehrani 1 , F. Moshiri 1 , S. M. Mousavi 1 , H. M. Hosseini 2 , B. Motesharezadeh 2
|
Abstract
In order to study the root-induced changes on behavior of phosphorus in the rhizosphere of two canola cultivars in order to better management of P fertilization this research was conducted by using of rhizobox technique as a factorial arrangement based on the completely randomized design with two treatments in three replications. Treatments were two canola (Brassica napus L.) cultivars, Gabriela and Elvis, and two levels of monopotassium phosphate (0 and 80 mg P kg–1). The results showed that P fractions were changed in the 0–3 mm layer from the rhizoplane. The concentration of Olsen P was reduced in the soils of two cultivars, but water-soluble P (WSP) was increased in the upper box of the rhizobox, compared to the unplanted soil. The Olsen P and WSP fractions in the lower box were increased with increasing the distance from the root surface. Under P deficiency condition, di calcium phosphate (DCP) was 3.96, 4.38, and 6.25 mg kg–1 for Gabriela, Elvis, and unplanted soil, respectively. The results also showed that Gabriela prefers calcium phosphates and Elvis prefers Fe–P form. Shifting of DCP to Fe–P in the upper box and shifting of DCP to Al–P and Fe–P in the lower box can be considered as a useful index for management of soil P. In other words, observing of this shifting pattern shows the better time for P fertilization. So, studying the chemical forms of phosphorus may be used as an efficient tool for P recommendation in canola cropping systems.
中文翻译：
两种油菜品种根系变化对磷分馏的影响
摘要
为了研究根系对两种油菜品种根际磷素行为的影响，以更好地管理磷肥，本研究采用根际技术作为因子排列，基于两种处理的完全随机设计。在三个复制中。处理的是两种油菜 ( Brassica napus L.) 栽培品种 Gabriela 和 Elvis，以及两种水平的磷酸二氢钾（0 和 80 mg P kg –1）。结果表明，P 分数在距根平面 0-3 mm 的层中发生了变化。与未种植的土壤相比，两个品种的土壤中 Olsen P 的浓度降低，但在根箱上部箱中的水溶性 P (WSP) 增加。下框中的 Olsen P 和 WSP 分数随着距根表面距离的增加而增加。缺磷条件下，磷酸二钙（DCP）分别为3.96、4.38和6.25 mg kg -1分别为 Gabriela、Elvis 和未种植的土壤。结果还表明，Gabriela 更喜欢磷酸钙，而 Elvis 更喜欢 Fe-P 形式。上盒中 DCP 向 Fe-P 的转移和下盒中 DCP 向 Al-P 和 Fe-P 的转移可以被认为是土壤 P 管理的有用指标。换句话说，观察这种转移模式表明施磷的最佳时机。因此，研究磷的化学形式可作为油菜种植系统中磷推荐的有效工具。
京公网安备 11010802027423号