The low water solubility of struvite is thought to limit its agronomic utility as a phosphorus (P) fertilizer compared with highly soluble P fertilizers. Furthermore, struvite's fertilizer potential is complicated by its hypothesized soil pH‐dependent solubility, crop‐specific interactions, and limited availability of struvite‐derived N, which may explain conflicting reports of crop responses to struvite compared with conventional P fertilizers. A systematic literature review and meta‐analysis was conducted to evaluate the effects of soil pH, soil test P (STP), P rate, struvite particle size, and struvite‐derived N on crop aboveground biomass, P concentration, P uptake, and N uptake. Struvite‐fertilized plants yielded higher biomass, P concentration, and P uptake compared with ammonium phosphates, and superphosphates in soils with pH < 6 and crop responses decreased with increasing pH. Crop responses to struvite were inversely related to experiment duration to soil mass ratios (d kg⁻¹) used in greenhouse studies, opposite to the hypothesized benefit of more roots per unit soil on struvite dissolution. The proportion of total N applied derived from struvite increased with increasing struvite‐P application rate and was inversely related to total N uptake, likely due to the increased crop reliance on slowly available struvite‐N. Crop responses were potentially overestimated by high STP and/or P rates and underestimated due to N limitation from large proportions of total N applied derived from struvite. Evaluations of struvite collectively indicate its efficacy as a P fertilizer is affected by soil pH and its contribution to total N application.

中文翻译：

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鸟粪石作为磷肥的农业潜力的回顾和荟萃分析

与高可溶性磷肥相比，鸟粪石的低水溶性使其在农艺上的应用受到限制。此外，鸟粪石的肥料潜力由于其假定的土壤pH依赖性溶解度，作物特异性的相互作用以及鸟粪石衍生的氮的有限供应而变得复杂，这可能解释了与常规磷肥相比农作物对鸟粪石反应的报道相互矛盾。进行了系统的文献综述和荟萃分析，以评估土壤pH，土壤测试磷（STP），磷比率，鸟粪石粒径和鸟粪石衍生的氮对地上作物生物量，磷浓度，磷吸收和氮的影响。摄取。与磷铵和过磷酸钙在pH <<土壤中的土壤中相比，鸟粪石施肥的植物产生更高的生物量，磷浓度和磷吸收。6和作物响应随pH值的增加而降低。作物对鸟粪石的反应与实验持续时间与土壤质量比（d kg）成反比。^-1）用于温室研究，这与假定的每单位土壤更多根系对鸟​​粪石溶解的假定好处相反。鸟粪石中施用的氮素总量比例随着鸟粪石-P施用量的增加而增加，并且与总氮吸收量成反比，这可能是由于农作物对缓慢可用的鸟粪石-N的依赖性增加所致。较高的STP和/或P速率可能会高估作物的响应，而由于从鸟粪石中施用的N占很大比例，因此对N的限制会低估作物的响应。鸟粪石的综合评价表明其作为磷肥的功效受土壤pH值及其对总氮肥施用的影响。