摘要
本文论述了陕西农业主要病虫灾害的发生和演变过程。指出演变的总趋势是主要农作物病虫害趋向严重且种类不断增多。并以此提出了主要病虫害的控制途径。
The evolutional cause of main agricultural diseases and pests calamities in Shaanxi province was expounded in this paper. The main tendency of development is seriously harm and increase in sorts of the diseases and pests. Six control ways were put forward.
出处
《灾害学》
CSCD
1992年第1期23-28,共6页
Journal of Catastrophology
关键词
病虫
灾害
演变
控制
Calamity of crop disease and pest, Variety, Evolution, System, Control way
