稻麦轮作体系下有机肥施用对作物产量和土壤性质影响的整合分析

doi:10.13287/j.1001-9332.202109.024

摘要/Abstract

摘要： 为明确稻麦轮作系统有机肥施用对作物产量和土壤性质的影响,本研究搜集已公开发表的文献数据,利用meta分析法定量分析了有机肥类型(普通有机肥、生物质炭、秸秆)、施用策略(单施有机肥、有机肥配施部分化肥、有机肥配施全量化肥)、施用年限(短期、中期、长期)对稻麦产量和土壤性质的影响及其对不同土壤条件(酸性、中性、碱性)的响应。结果表明: 与单施化肥相比,有机肥施用对水稻和小麦的增产效应相近,分别为3.1%和3.0%。有机肥施用对土壤性质的提升效果更明显,显著降低了土壤容重(5.7%),显著提高了土壤有机质、全氮、全磷、碱解氮、速效磷和速效钾含量,以及微生物生物量碳、氮,增幅在11.7%～38.4%。不同类型有机肥中,生物质炭和普通有机肥对土壤性质的改良效果优于秸秆;与单施有机肥相比,有机肥配施化肥的作物增产效果更好,而土壤性质改良效果较差;随着有机肥施用年限增加,作物增产和土壤肥力提升效应逐渐增强;在酸性土壤条件下有机肥施用对作物的增产效果最显著。土壤容重与稻麦周年产量呈显著负相关,而土壤全氮、速效磷、速效钾含量和微生物生物量氮与稻麦周年产量呈显著正相关关系。

关键词: 稻麦轮作系统, 有机肥, 作物产量, 土壤性质, 整合分析

Abstract: To clarify the effects of organic fertilizer application on crop yield and soil properties in rice-wheat rotation system in China, we carried out a meta-analysis to quantitatively evaluate the effects of organic fertilizer types (ordinary organic fertilizer, biochar, and straw), fertilization regimes (organic fertilizer alone, organic fertilizer + partial chemical fertilizer, and organic fertilizer + full amount of chemical fertilizer), and experiment duration (short term, medium term, and long term) on soil properties and the yield of rice and wheat, as well as their responses to soil conditions (acid, neutral, basic). Results showed that the application of organic fertilizer had similar yield-increase effect on rice yield (3.1%) and wheat yield (3.0%) compared to chemical fertilizer application alone. The effect of organic fertilizer application on soil quality was more obvious, significantly reducing soil bulk density by 5.7%, and increasing the concentrations of soil organic matter, total nitrogen, total phosphorus, alkali-hydrolyzable nitrogen, available phosphorus, available potassium, microbial biomass carbon, and microbial biomass nitrogen by 11.7%-38.4%. Among different types of organic fertilizer, the effects of ordinary organic fertilizer and biochar on soil properties improvement were better than straw. Compared to the organic fertilizer application alone, the effects of organic fertilizer combined with chemical fertilizer on crop yield was better, but poorer on soil property improvement. With the increasing duration of organic fertilizer application, crop yield and soil fertility gradually increased. Under the condition of acid soil, the effect of organic fertilizer application on crop yield was the best. The annual yield of rice and wheat showed significant negative correlation with soil bulk density, but a significant positive correlation with the concentrations of soil total nitrogen, available phosphorus, available potassium, and microbial biomass nitrogen.

Key words: rice-wheat rotation system, organic fertilizer, crop yield, soil property, meta-analysis

李圆宾, 李鹏, 王舒华, 徐璐瑶, 邓建军, 焦加国. 稻麦轮作体系下有机肥施用对作物产量和土壤性质影响的整合分析[J]. 应用生态学报, 2021, 32(9): 3231-3239.

LI Yuan-bin, LI Peng, WANG Shu-hua, XU Lu-yao, DENG Jian-jun, JIAO Jia-guo. Effects of organic fertilizer application on crop yield and soil properties in rice-wheat rotation system: A meta-analysis[J]. Chinese Journal of Applied Ecology, 2021, 32(9): 3231-3239.

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