油橄榄在桐口林场定植三年,已开始发生几种病虫危害。为了早作预防,及时消灭,防止蔓延扩散,特简要介绍几种主要病虫害及其防治方法,供作参改。 一、根腐病 根腐病是一种统称,可由寄生物和非寄生物引起,往往由于根部的严重腐烂导致植株的枯萎死亡。桐口林场的油橄榄苗已开始发现此病。 Olive planting in Tongkou three years, has begun to occur several pests and diseases. In order to make prevention as early as possible and eliminate them in time, and prevent the spread of proliferation, we shall briefly introduce several major pests and diseases and their prevention and control measures for reference. First, the root rot root rot is a general term, can be caused by parasites and non-parasites, often due to the root of the serious decay led to plant wilt death. Olive seedlings Tongkou forest farm has begun to find the disease.