数字农科院2.0

Effects of different continuous fertilizer managements on soil total nitrogen stocks in China: A meta-analysis

文献类型： 外文期刊

作者： Pengfei DANG;Congfeng LI;Tiantian HUANG;Chen LU;Yajun LI;Xiaoliang QIN;Kadambot H.M. SIDDIQUE

作者机构：

关键词： chemical fertilizer;climate change;cropping systems;manure;soil fertility;straw retention

期刊名称： Pedosphere

ISSN： 1002-0160

年卷期： 2022 年 32 卷 1 期

页码：

收录情况： SCIE（2022版） ; CSCD（2021-2022年度） ; 科技核心（2021版） ; 农林核心（2020版）

摘要： Soil total nitrogen is critical for crop productivity and related to agricultural managements. However, the effects of different fertilizer applications on soil total nitrogen storage are not well understood. To quantify soil total nitrogen storage under different fertilizer management practices and explore the effects of climate, soil texture, experimental duration, and cropping system on soil total nitrogen storage in China, we conducted a meta-analysis of 67 fertilizer management strategies from experiments conducted over a period of at least three years. This meta-analysis included 854 observations of changes in soil total nitrogen stock (TNS) under no fertilizer application (control, CK), chemical fertilization with nitrogen, phosphorus, and potassium (CF), CF plus straw retention (CFS), and CF plus manure addition (CFM) relative to initial soil TNS. The CFM and CFS treatments increased soil TNS, and the CFM treatments increased soil C/N ratio the most. The longer the experimental duration, the greater the increase in soil TNS in the CF, CFS, and CFM treatments. Soil texture and crop type significantly affected the changes in soil TNS. The experimental duration, initial soil TNS, soil C/N ratio, and cropping system had significant linear correlations with the change in soil TNS. Temperature and precipitation were not correlated with soil TNS. Results of random forest modeling indicated that the most important factor affecting changes in soil TNS was experimental duration (positive correlation), followed by initial soil TNS (negative correlation). The CFM treatments had the largest increase in soil TNS under various conditions. We recommend promoting CFM to improve soil fertility in farmlands globally.

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