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LAI Yan-xue. A tactic for controlling pine wilt disease based on its distribution and spread[J]. Journal of Zhejiang A&F University, 2000, 17(2): 170-175.
Citation: LAI Yan-xue. A tactic for controlling pine wilt disease based on its distribution and spread[J]. Journal of Zhejiang A&F University, 2000, 17(2): 170-175.

A tactic for controlling pine wilt disease based on its distribution and spread

  • Received Date: 1999-08-20
  • Rev Recd Date: 1999-12-28
  • Publish Date: 2000-06-20
通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

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A tactic for controlling pine wilt disease based on its distribution and spread

Abstract: In order to study and establish a tactic for controlling pine wilt disease based on its distribution and spread in a state of nature , the paper describes the static and dynamic distribution of this disease with c =s2/ x in the range from city to village in 1992 -1998 , decides on its growth rate using N t =N0e rt m , comments on the effect of two practicing tactics , that is first controlling outside then center and first controlling center then outside , according to the number of wilt pine trees next year applying the standard of D =[ (N n-1 -N n)/N n-1 ] 100 %. The results show that c?1 means there are some obvious cores in the distribution of pine wilt disease , the growth rate in area is N t =N0e 0.43 t , the number of wilt pine trees is N t =N0e 0.19 t , the relationship between the number of wilt pine trees in center areas and the distance of the outer wilt pine trees is y =10 1.990 7+0.447 5 logx , the tactic of first controlling outside then center leads to overall increasing of pine wilt disease , and the tactic of first controlling center then outside leads to its overall decreasing .The tactic of first controlling center then outside can effectively control the development of pine wilt disease.

LAI Yan-xue. A tactic for controlling pine wilt disease based on its distribution and spread[J]. Journal of Zhejiang A&F University, 2000, 17(2): 170-175.
Citation: LAI Yan-xue. A tactic for controlling pine wilt disease based on its distribution and spread[J]. Journal of Zhejiang A&F University, 2000, 17(2): 170-175.

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