通过农业土壤中的根系形态和土壤磷管理优化水稻产量和磷利用效率

IF 3.5 2区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY
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引用次数: 0

摘要

磷(P)肥是作物生产中的一项重要成本。了解磷肥-土壤-作物相互作用背后的机制可以提高磷的利用效率(PUE)并增加产量。我们在红壤(pH = 5.9)和石灰凝结黑土(pH = 7.8)中进行了水稻栽培桶实验,施用了单过磷酸钙(SSP)、钙镁磷肥(CMP)、磷酸二铵(DAP)、三过磷酸钙(TSP)、多磷酸铵(APP),并设对照组(CK,不施磷肥)。我们分析了水稻对磷的吸收和利用模式,评估了不同磷肥配方对水稻根系形态、产量和PUE的影响,并研究了土壤磷库的变化。在红壤中,APP 处理产生了最大的总根长、水稻产量和 PUE,并增加了开花期土壤中的 Olsen-P、NaHCO3-Pi。在石灰砂礓黑土中,TSP 和 APP 处理的水稻产量最高,花期的 Olsen-P、H2O-P、NaHCO3-Pi 也有所增加。此外,TSP 处理花期的总根长和根表面积最大,APP 处理的 PUE 最大。随机森林回归分析表明,残留-P 和奥尔森-P 分别对红壤和石灰凝结黑土中的水稻产量有显著影响。我们建议在红壤中使用 APP,在石灰凝结黑土中使用 TSP 和 APP 栽培水稻,以优化土壤钾库特征和根系形态,促进养分吸收,最终获得最高产量和 PUE。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Optimizing rice yield and phosphorus use efficiency through root morphology and soil phosphorus management in agricultural soils

Phosphorus (P) fertilizer is a significant cost in crop production. Understanding the mechanisms behind P fertilizer–soil–crop interactions can enhance phosphorus use efficiency (PUE) and increasing yield. We conducted a rice cultivation bucket experiment in red soil (pH = 5.9) and lime concretion black soil (pH = 7.8) and applied single superphosphate (SSP), calcium magnesium phosphate (CMP), diammonium phosphate (DAP), triple superphosphate (TSP), ammonium polyphosphate (APP), and a control group (CK, no P fertilizer). We analyzed rice P uptake and utilization patterns, evaluated the impact of varying P fertilizer formulations on rice root morphology, yield, and PUE, and investigated changes in soil P pools. In red soil, the APP treatment produced the greatest total root length, rice yield, PUE and increased soil Olsen-P, NaHCO3-Pi at anthesis. In lime concretion black soil, the TSP and APP treatments had the highest rice yields and increased Olsen-P, H2O-P, NaHCO3-Pi at anthesis. Moreover, the TSP treatment had the greatest total root length and root surface area at anthesis and the APP treatment had the largest PUE. Random forest regression analysis revealed that residual-P and Olsen-P significantly impacted rice yield in red soil and lime concretion black soil, respectively. We recommend using APP in red soil and TSP and APP in lime concretion black soil for rice cultivation to optimize soil P pool characteristics and root morphology for nutrient uptake, ultimately leading to the highest yields and PUE.

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来源期刊
Annals of Agricultural Science
Annals of Agricultural Science AGRICULTURE, MULTIDISCIPLINARY-
CiteScore
12.60
自引率
0.00%
发文量
18
审稿时长
33 days
期刊介绍: Annals of Agricultural Sciences (AOAS) is the official journal of Faculty of Agriculture, Ain Shams University. AOAS is an open access peer-reviewed journal publishing original research articles and review articles on experimental and modelling research at laboratory, field, farm, landscape, and industrial levels. AOAS aims to maximize the quality of the agricultural sector across the globe with emphasis on the Arabian countries by focusing on publishing the high-quality applicable researches, in addition to the new methods and frontiers leading to maximizing the quality and quantity of both plant and animal yield and final products.
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