四川农业大学学报 ›› 2000, Vol. 18 ›› Issue (04): 339-342.doi: 10.16036/j.issn.1000-2650.2000.04.014

• 研究论文 • 上一篇    下一篇

石棉县耕地土壤的钾素平衡问题探讨

李廷轩, 周建新, 张锡洲, 夏建国, 胡云   

  1. 四川农业大学 农学院, 四川 雅安 625014
  • 收稿日期:2000-06-12 出版日期:2000-12-31 发布日期:2017-04-21
  • 基金资助:
    四川省教育厅重点资助项目。

Discussion on the Balance of Potassium in Soil of Cultivated Land in Shimian County

LI Ting-xuan, ZHOU Jian-xin, ZHANG Xi-zhou, XIA Jian-guo, HU Yun   

  1. College of Agriculture, Sichuan Agricultural University, Yaan 625014, Sichuan, China
  • Received:2000-06-12 Online:2000-12-31 Published:2017-04-21

摘要: 通过对石棉县主要耕地土壤中钾素收入与支出情况的探讨,结果表明,1996年全县当年钾的支出为1376.67t,而收入仅693.9t,相差682.77t,亏缺率为49.60%,同年土壤中的氮和磷则有盈余。增施钾肥后水稻可以增产825kg/hm2;小麦的增产率则多在16%以上。石棉可供开发利用的钾素资源有花岗岩石粉末和秸杆两大类,它们每年可提供约820~980t的钾素(K2O),可大大缓解土壤钾的亏缺。

关键词: 耕地土壤, 钾素平衡, 亏缺, 钾肥

Abstract: Based on the discussion on the ingathering and disbursing of Potassium in main soil of cultivated land in Shimian County, the result indicats that the ingathering of Potassium was 1376.67t in 1996, meantime the disbursing was 693.9t, the discrepancy was 682.77t, the ratio of waning was 49.60%, at the same time the nitrogen and the phosphorus were surplus. The paddy yielded 825kg/hm2 after adding to Potassium fertilizer; the production of wheat increased above 16%. There are two kinds of resources in Potassium, one is the powder of granite and the other is straw, which can provide with 820t to 980t Potassium (K2O) to greatly relieve the waning of Potassium.

Key words: SOILS OF CULTIVATED LAND, BALANCE OF POTASSIUM, WANING, POTASSIUM FERTILIZE4

中图分类号: 

  • S158.3