Subtropical and tropical area with high temperature and rainfall cause serious problems in pest and deceases, which need to use more amounts of pesticides.

• 尤其是身于亚热带地区的我们，在高温多湿的环境条件下，病虫之侵袭危害甚大，为求达到生产及商业品质之目标，农药之使用甚难避免。