生物钾肥的增产作用及对土壤钾平衡的影响
DOI:
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:


THE ROLE OF BIOLOGICAL POTASH FERTILIZER IN PLANT NUTRITION AND POTASSIUM BALANCE OF SOIL
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    生物钾肥是指具有高钾低氮磷养分组成的植物的绿色体或秸杆。生物钾肥作用的实质是:植物不断吸收并活化土壤钾,富集土壤和水体中钾,通过以绿色体或秸秆形式归还,促进土壤钾的良性循环和再利用。生物钾肥中钾的溶解度和利用率都较高,其供钾性能类似矿质钾肥。在等钾量下,各种生物钾肥的增产效果和矿质钾肥接近。

    Abstract:

    The biological potash fertilizers (bio-K fertilizers) are the plants which can strongly absorb potassium from soil and accumulate K relatively high in its tissue. To investigate the mechanism of K-enriching carpacity of bio-K fertilizer and its influence on crop yield, three xypical plants-rice straw sunflower (fresh plant) and Alterndntherd philoxeroides (Mart) Griseb were used in pot and field experiments.It was found that the yield increased significantly by applying the bio-K fertilizers to potassium deficient soils. The average percentage increased was 17.5±8.2% for rice grain and 11.7% for lint cotton as compared with control However, at equal amount of K level applied,there was no significant difference in yield among all treatments of potassium chloride and bio-K fertilizers, it indicates that the K-supplying capacity of bio-K fertilizers is similar to that of KCl. In the terms of absorption rate of nonexchangeable-K by plants tested, the capacity of K accumulation waS high during its growing stage. Based on the total potassium absorbed, 68-76% of nonexchangeable-K was taken up by rice plant and 40-62% of that by sunflower (seedlings, 57 days). As to Alzernantlzera philoxeroides, the K+ concentration both in higher and lower solution can be recovered by 97% and 71-90% respectively, it seems that the roots of Alternanther a philoxeroides have a strong affinity to K+.The K+ in soil could be mantained by organic matter supplied as bio-K fertilizers. As a result, the loss of K+ from soil was decreased by 40%, this benefit was more markedly for sandy soils.Data from long-term experiment for four years showed that the K in soil appeared to be somewhat depleted, as compared with its origin content, this unbalance is mainly due to the K removed by crops excessing the K supply (90 kg K2O/ha per year). However, the K consumed could be partly returned to soil by the use of bio-K fertilizers.

    参考文献
    相似文献
    引证文献
引用本文

沈中泉,郭云桃,刘良学,蔡庆祥.生物钾肥的增产作用及对土壤钾平衡的影响[J].土壤学报,1988,25(1):31-39. Shen Zhongqian, Guo Yuntao, Liu Liangxue, Cai Qingxiang. THE ROLE OF BIOLOGICAL POTASH FERTILIZER IN PLANT NUTRITION AND POTASSIUM BALANCE OF SOIL[J]. Acta Pedologica Sinica,1988,25(1):31-39.

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2013-02-25
  • 出版日期: