欢迎访问《生态学杂志》官方网站,今天是 分享到:

生态学杂志 ›› 1994, Vol. ›› Issue (3): 68-69.

• 研究报告 • 上一篇    下一篇

水稻苗床土壤调酸后对土壤酶活性及一些营养元素的影响

唐咏1, 梁成华1, 张中原2, 李焕珍2   

  1. 1. 沈阳农业大学, 110161;
    2. 沈阳市土肥工作站, 110034
  • 收稿日期:1991-04-23 修回日期:1993-05-20 出版日期:1994-06-10

Effects of Soil Acidification on Enzyme Activities and Nutrient Elements in Rice Nursery Soils

Tang Yong1, Liang Chenghua1, Zhang Zhongyuan2, Li Huanzhen2   

  1. 1. Shenyang Agricultural University, 110161;
    2. Shenyang Station of Soil and Fertilizers, 110034
  • Received:1991-04-23 Revised:1993-05-20 Online:1994-06-10

关键词: 水坝工程, 生态风险, 总和优势度, 物种

Abstract: Studies of soil acidification in rice nurserv soil show that the activity of soil urease is decreased,the activitv of phosphatase in alkaline soil is increased and that in neutral soil is decreased after acidifing soils to pH4.5.The volatilization rate of ammoniacal nitrogen in the soils is decreased obviously by acidifing the soil,especially in alkaline soils. The available phosphate in alkaline soils is increased,but that in neutral soil is decreased slightly as the soil is acidified.The amount of positive trace elements in soil are increased differently in acid conditions.Thus acidifing dry nursery soils in early spring can improve available nutrients for rice in the soils.

Key words: dam engineering, ecological risk, summed dominance ratio, species.

中图分类号: