植物生态学报 ›› 1995, Vol. 19 ›› Issue (1): 64-71.

• 论文 • 上一篇    下一篇

北京石灰性草甸土冬小麦营养元素生物循环的特点与锰、锌肥效应

陈铭,谭见安,尹崇仁,朱理徽   

  • 发布日期:1995-01-10
  • 通讯作者: 陈铭

Biocycling of Nine Nutrient Elements in Winter Wheat on a Calcareous Alluvial Soil From Beijing

Chen Ming, Tan Jian-an, Yin Chong-ren, Zhu Li-hui   

  • Published:1995-01-10
  • Contact: Lu Cun-fu

摘要: 本文用盆钵试验研究京郊石灰性草甸土冬小麦养分生物循环的结果表明:小麦对不同养分吸收、携出和归还数量的差异很大。根据随籽粒携出和以根茬归还的比例特点,可将养分划分为三种类型:1)低归还高携出型(N、P、K);2)低携出高归还型(Ca、Fe);3)中归还中携出型(Mg、Mn、Cu、Zn)。施锰增加植株对氮和锰的吸收及钾和锰随籽粒的携出;施锌则降低植株对锰的吸收和随籽粒携出的钾、钙、镁、铁、锰量。锰肥和锌肥有拮抗作用。

Abstract: In this paper, we report the results of a series of greenhouse pot experiments designed to investigate the biocycling of nine mineral elements in winter wheat on a calcareous alluvial soil collected from Beijing region, The results showed that there were significant differences among the quantities and rations amount returned to the soil. We grouped these nutrient elements into three types in accordance with the percentages of output by plants and the amount returned to the soil:1) The type of low returning and high output rates included N, P and K, which generally had returning rate of less than 20% and output rate of greater than 60%.2) The type of high returning and low output rates was composed of Ca and Fe, which had returning rate of greater than 50% and output rate of less than 10%.3) The type of moderate returning and moderate output rates consisted of Mg, Mn, Cu and Zn, which had returning rate falling between 30—50%, and outpualling betling between 20—30%.The total uptake of N an Mn by winter wheat plants and the output or removal of K by grains generally increased due to the application of Mn fertilizers. While the total uptake of Mn by plants decreased with the application of Zn fertilizer. The effects of Mn and Zn fertilizers on the biocyclings of some nutrient elements in winter wheat on a calcareous alluvial soil in Beijing region were quite antagonistic.