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中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (18): 192-195.

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

地黄不同品种物质生产与养分吸收特性的研究

周丽莉 祁建军 孙鹏 牛世杰 李先恩   

  • 收稿日期:2010-01-26 修回日期:2010-08-08 出版日期:2011-09-20 发布日期:2011-09-20
  • 基金资助:
    中央级公益性科研院所基本科研业务专项;北京市科技计划课题

Characteristics of dry matter production and NPK absorption for different Rehmannia glutinosa cultivars

  • Received:2010-01-26 Revised:2010-08-08 Online:2011-09-20 Published:2011-09-20

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摘要： 摘要：以8个地黄品种（2个栽培种、3个变异种，3个野生种）为研究对象，通过分析不同生育阶段地黄干物质生产和养分吸收特征，以期为合理施肥，制定地黄高产优质栽培技术提供依据。结果表明：不同地黄品种物质生长和养分吸收表现出较大差异，集中表现在栽培种显著高于野生种。在人工栽培过程中，形成100公斤地黄经济产量的氮磷钾养分需求量平均为2.10 kg (1.6~2.50)，0.48 kg (0.29~0.60) 和1.8 kg (1.41~2.16)。氮钾肥吸收高峰期出现在中期，生育后期养分吸收增加较中期有所减少，而磷素吸收高峰则一直延续到收获。依据上述结果，我们认为，必须降低地黄人工栽培过程中基施氮肥的比例，大量的氮肥应施在地黄快速生长期，适当的增加中后期磷钾，特别是钾肥使用有助于增加地黄的生长，提高地黄经济产量。

关键词: 冬枣, 冬枣, 气调指标, 乙醛, 乙醇, 有害物质

Abstract: Abstract: Characteristics of dry matter production and NPK absorption of Rehmannia glutinosa were studied to provide a properly fertilizer application for a better cultivar quality and yield. The great variation of dry matter production and NPK absorption was observed between cultivars. The rate of matter production and NPK absorption in the production of species was greater than these in wild species. Considering all production of species, average 2.10 kg N (1.6~2.50), 0.48 kg P (0.29~0.60) and 1.8 kg K (1.41~2.16) were needed to produce 100 kg economical yield. The absorption peak of NK was middle growth period, and the absorption peak of P would last out to harvest from the middle growth period. We concluded that more N fertilizer should be applied in the rapid growth period, not before planting, and add PK fertilizer in the growth period was good to increase growth and economical yield within the artificial cultivation of Rehmannia glutinosa