• ISSN 1008-505X
  • CN 11-3996/S
周建斌. 作物营养从有机肥到化肥的变化与反思[J]. 植物营养与肥料学报, 2017, 23(6): 1686-1693. DOI: 10.11674/zwyf.17287
引用本文: 周建斌. 作物营养从有机肥到化肥的变化与反思[J]. 植物营养与肥料学报, 2017, 23(6): 1686-1693. DOI: 10.11674/zwyf.17287
ZHOU Jian-bin. Reconsideration of the changes of plant nutrition from organic fertilizers to chemical fertilizers[J]. Journal of Plant Nutrition and Fertilizers, 2017, 23(6): 1686-1693. DOI: 10.11674/zwyf.17287
Citation: ZHOU Jian-bin. Reconsideration of the changes of plant nutrition from organic fertilizers to chemical fertilizers[J]. Journal of Plant Nutrition and Fertilizers, 2017, 23(6): 1686-1693. DOI: 10.11674/zwyf.17287

作物营养从有机肥到化肥的变化与反思

Reconsideration of the changes of plant nutrition from organic fertilizers to chemical fertilizers

  • 摘要: 二十世纪前,农业生产主要靠施用有机肥为作物提供营养,维持地力不衰,这一时期一般称为“有机营养”阶段。之后,化肥逐渐取代有机肥,成为作物养分的主要来源,农业生产进入以化肥养分供应为主的“无机营养”阶段。化肥的连续大量施用在作物增产方面发挥了巨大作用,也带来了不少问题,以致近年来出现了怀疑或否定农业生产中施用化肥的思潮。为此,本文回顾了植物营养学科的发展历程和我国化肥使用的历史,指出仅靠施用有机肥、种植豆科作物等传统的营养作物的方式难以满足农业生产对养分的需求,化肥与有机肥配合施用是我国农业发展的正确道路。目前生产中,化肥施用存在不合理和过量问题,有机肥施用方面,主要是集约化养殖业与种植业的不合理布局,存在种养分离,难以农业利用等养分管理问题。同时解决这两个问题,除采取已有的合理施肥技术及方法外,还应改变从植物营养角度只重视氮磷钾等无机养分的供应,拓宽为重视碳、氮、磷及钾等不同元素间的时空平衡关系;以农业生态系统养分资源高效循环利用为核心,采取不同方式实现有机–无机营养的结合,应避免陷入有机与无机营养的争论;从生物地球化学循环角度看待养分利用与管理问题,关注养分在田块、流域及区域尺度的流向及对土壤、水体及大气的影响;将科技与政策等有效结合,提高养分利用效率,减少养分损失,保障我国农业的健康持续发展。

     

    Abstract: Agriculture had been relied on the nutrients from the different organic fertilizers over thousands of years. Organic nutrients had played pivotal role in keeping low but stable crop yields and soil fertility. This period is refined as organic nutrition period. The foundation of mineral nutrition theory in the 19th century stimulated the development and application of chemical fertilizers, and chemical nutrients replaced organic ones quickly and became the main nutrient sources for crops. This period is considered as inorganic nutrition period. The application of chemical fertilizers significantly increased crop yields, at the same time, over-application of them results in a series of economic and environmental problems. Negating or doubting the application of chemical fertilizers could be heard here and there. Therefore, the history and roles of plant nutrition are recalled and the practices of integrated use of organic and chemical fertilizers are reviewed in this paper. It is pointed out that only using the traditional ways could not meet the needs of agriculture. The nutrient supply should be transferred from purely considering mineral nutrients (N, P, K, etc.) to comprehensively nutrients from chemical and organic sources. Nutrient utilization and management should also consider the concordant relation among plant-soil-microbial. More attentions should be paid on nutrient flows in the different scales, including field, catchment, and region; and their effects on quality of soil, water, and air are also needed to evaluate. Combining technological measures with policy tools is also key to increase nutrient use efficiency, and reduce their losses.

     

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