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Phosphorus Leaching Alleviated by Organic Carbon in Greenhouse Vegetable Production System

文献类型： 外文期刊

作者： Shi, Ning 1 ; Li, Yan 1 ; Sun, Zeqiang 1 ; Liu, Shenglin 1 ; Zhong, Ziwen 1 ;

作者机构： 1.Shandong Acad Agr Sci, Key Lab Agroenvironm Huang Huai Hai Plain, Minist Agr & Rural Affairs, Jinan, Peoples R China

关键词： High P soil; Soil C; P ratio; P balance; Phosphorus migration

期刊名称：JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION （ 影响因子：3.9； 五年影响因子：3.9 ）

ISSN： 0718-9508

年卷期： 2023 年 23 卷 2 期

页码：

收录情况： SCI

摘要： Phosphorus (P) is an essential element for crop growth; however, the continued application of P at a rate exceeding crop requirements can increase soil P concentration and the potential for P loss to surface waters. How to reduce continuous accumulation and leaching of phosphorus (P) by organic materials in high-P soils of greenhouse vegetable production systems is not well understood. This study evaluated the influence of different various organic materials on cocozelle P uptake and the soil P migration in Shandong province, China. Three high-carbon organic materials were selected to substitute for continuous application of duck manure, mushroom residue (MR), peat soil (PS), and wheat straw (WS), and duck manure (DM) was a customary control treatment. Duck manure was chosen because it is more common, easy to extract, and cheap. During a long term of winter-spring season of cocozelle, application of high-carbon organic materials increased soil pH and increased the soil C:P ratio in a 0-20-cm soil layer at the seedling stage (SS) and full fruiting stage (FFS) of cocozelle, but the peaks of microbial biomass P (MBP) and microbial biomass C (MBC) were at FFS and seedling pulling stage (SPS), respectively. However, the input of MR increased soil P content, with 334 mg kg(-1) in the 0-20-cm soil layer and 192 mg kg(-1) in the 20-40-cm soil layer, which were significantly higher than other treatments. The amount and available form of soil carbon will affect the transformation and utilization of soil P by soil microorganisms. Soil MBC plays a key role in the accumulation and migration of soil P in the rich-P soil, and the application of MR with high carbon content can significantly reduce the risk of P leaching in the 0-20-cm soil layer.

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