四川农业大学学报 ›› 2002, Vol. 20 ›› Issue (03): 249-252.doi: 10.16036/j.issn.1000-2650.2002.03.017

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犍为县农田养分平衡研究

杨玉国1, 张锡洲2, 陈光辉3   

  1. 1. 犍为县农业局, 四川 犍为 614400;
    2. 四川农业大学 农学院土化系, 四川 雅安 625014;
    3. 彭州市农业局, 四川 彭州 611930
  • 收稿日期:2002-03-04 出版日期:2002-09-30 发布日期:2017-03-06
  • 基金资助:
    四川省科技厅重点项目;乐山市科技局重点项目

Study on the Farmland Nutrients Balance and the Dynamic Variation Tendency of Soil Nutrients in Qianwei County

YANG Yu-guo1, ZHANG Xi-zhou2, CHEN Guang-hui3   

  1. 1. Agricultural Bureau of Qianwei, Qianwei 614400, Sichuan, China;
    2. College of Agronomy, Sichuan Agricultural University, Yaan 625014, Sichuan, China;
    3. Agricultural Bureau of Pengzhou City, Pengzhou 611930, Sichuan, China
  • Received:2002-03-04 Online:2002-09-30 Published:2017-03-06

摘要: 通过对相关农业统计资料的分析,研究了犍为县1985~1999年间农田养分平衡状况,结果表明:20世纪90年代以后,农田氮素由基本持平转向盈余20%左右;磷素全面扭亏为盈,盈余率已超出50%;钾素一直处于50%以上的大比例亏缺状态。并针对农田养分平衡状况提出了控施氮肥、改善磷肥施用技术、大力实施秸秆还田等改善农田肥料结构的调控对策和措施。

关键词: 农田养分, 平衡, 调控对策, 肥料结构

Abstract: According to statistics, the farmland nutrients balance from 1985 to 1999 in Qianwei county are discussed. The result showed that in 1990's, the nitrogen in farmland changed from equilibrium to surplus, about 20 percent at present time; the content of phosphorus varied from deficiency to surplus, over 50 percent now; the potassium was deficient all along with high proportion, the deficit is over 50 percent. And the regulating ways relevant to changing construction of fertilizer in farmland was given, such as control nitrogen, changing the using ways of phosphorus, etc.

Key words: FARMLAND NUTRIENTS, BALANCE, REGULATING WAYS, CONSTRUCTION OF FERTILIZER

中图分类号: 

  • S158.3