Phosphate Fertilizer Type and Liming Affect the Growth and Phosphorus Uptake of Two Maize Cultivars

IF 3.3 2区农林科学 Q1 AGRONOMY

Agriculture-Basel Pub Date : 2023-09-07 DOI:10.3390/agriculture13091771

Fangfang Ning, P. M. Nkebiwe, Jens Hartung, Sebastian Munz, Shoubing Huang, Shunli Zhou, Simone Graeff-Hönninger

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Abstract

In the context of phosphorus (P) exhaustion and low P use efficiency (PUE) in crop production, a field trial was designed on a low-P soil in southwestern Germany in 2020 and 2021 to investigate the effects of P fertilizer type and liming on maize growth and P uptake and PUE. The experimental factors were (i) two P fertilizer types, rock phosphate (RP) and diammonium phosphate (DAP); (ii) lime application, lime and no lime; and (iii) two maize cultivars. The results showed that RP resulted in a lower leaf area index and light interception compared with DAP, a 33% lower silage yield, and a 29% lower P content at harvest. The PUE of RP was 18%, which was 37% lower than DAP. Soil liming reduced shoot biomass and led to 35% less shoot P content at the six-leaf stage. The maize cultivar Stabil expressed higher yielding and P acquisition characteristics. In conclusion, DAP cannot be replaced by placed RP, regardless of the lime application in silage maize production in this study. Future research on the PUE of maize cultivars should also consider root characteristics in response to P fertilizer type and soil pH.

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磷肥类型和石灰对两个玉米品种生长和磷吸收的影响

在作物生产中磷(P)耗竭和低磷利用效率(PUE)的背景下，设计了2020年和2021年在德国西南部低磷土壤上进行的田间试验，研究了磷肥类型和石灰对玉米生长、磷吸收和PUE的影响。试验因素为:(1)两种磷肥类型，即磷矿肥(RP)和磷酸二铵(DAP);(ii)施石灰、施石灰和不施石灰;(三)两个玉米品种。结果表明，与DAP相比，RP的叶面积指数和截光率较低，青贮产量降低33%，收获时磷含量降低29%。RP的PUE为18%，比DAP低37%。土壤石灰化降低了六叶期地上部生物量，导致地上部磷含量降低35%。玉米品种稳定表现出较高的产量和磷获取特性。综上所述，无论本研究中青贮玉米生产中石灰的施用如何，放置的RP都不能替代DAP。今后对玉米品种PUE的研究还应考虑根系特征对磷肥类型和土壤pH值的响应。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Agriculture-Basel Agricultural and Biological Sciences-Food Science

CiteScore

4.90

自引率

13.90%

发文量

1793

审稿时长

11 weeks

期刊介绍： Agriculture (ISSN 2077-0472) is an international and cross-disciplinary scholarly and scientific open access journal on the science of cultivating the soil, growing, harvesting crops, and raising livestock. We will aim to look at production, processing, marketing and use of foods, fibers, plants and animals. The journal Agriculturewill publish reviews, regular research papers, communications and short notes, and there is no restriction on the length of the papers. Our aim is to encourage scientists to publish their experimental and theoretical research in as much detail as possible. Full experimental and/or methodical details must be provided for research articles.

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