Welcome to Chinese Journal of Applied Ecology! Today is Share:

Chinese Journal of Applied Ecology ›› 1994, Vol. 5 ›› Issue (4): 425-427.

• Articles • Previous Articles     Next Articles

Variation of oncomelania density in forest-agrosystem before and after flood periods and its control strategies

Peng Zhenhua1, Yao Yongkang1, Kang Zhongmin1, Sun Qixiang1   

  1. 1. Anhui Agricultural University. Hefei 230036;
    2. Anqing Institute of Schistosomiasis Control, Anqing 246003
  • Received:1993-12-22 Revised:1994-06-03 Online:1994-10-24 Published:1994-10-24

Abstract: To understand the dynamics of oncomelania population in a river shoal forest-agrosystem and its neighbouring ones, the influence of light, temperature, humidity and soil moisture content on oncomelania density is studied. The results show that the increase of its density during flood period can be attributed to its migration from the neighbouring system, and the sharp decrease of it after flood and before the next one is related to the cultivation and intercropping. Countermeasure for controlling oncomelania multiplication are put forward.

Key words: Forest-agrosystem, Flood period, Oncomelania density, yellow soil, relative yield, long-term application of NPK fertilizer, sustainability index of soil nutrients