咖啡种植于热带地区,是多年生灌木,开花结果能持续多年,许多咖啡(?)了50年仍能结实。因此,形成一个半永久性生态系,为咖啡害虫提供了相对稳定的食物源。存在于野生寄主上的各种害虫是重要的侵染源,其次是适生于咖啡树上的新害虫。例如:一些食叶性害虫,常存在咖啡植株间杂草上,然后转移取食咖啡叶片,成为十分重要的害虫。栽培措施的变化,有时对害虫影响很大,如肯尼亚,为了保护高海拔地区的小粒 Coffee is planted in tropical regions and is a perennial shrub. Flowering can last many years, and many coffee (?) Are still strong for 50 years. Thus, forming a semi-permanent ecosystem provides a relatively stable source of food for coffee pests. Various pests present on wild hosts are important sources of infestation, followed by new pests adapted to coffee trees. For example, some leaf-eating pests, often found in weed plants between coffee plants, then migrate to take coffee leaves and become very important pests. Changes in cultivation practices, sometimes have a great impact on pests, such as Kenya, in order to protect small areas of high altitude