论文部分内容阅读
梨黑星病是梨树的重要病害之一,我县一般发生年份病果率为25％～40％,病叶率5％～15％,严重时病果率、病叶率均在50％以上,叶片早期脱落,病果呈畸形,严重降低果品产量和质量。为了探索梨黑星病的有效防治技术,自1995年起在卢龙县岳家沟梨园进行定点试验,通过采取综合措施,取得了明显效果,几年来病果率在3％左右,病叶率在1％以下,有的年份基本上没有发生。在实践中体会到,要做好梨黑星病的防治工作,需把握好以下技术关
Pear scab is one of the important diseases of pear tree. In our county, the prevalence of disease is 25% ~ 40% and the rate of diseased leaves is 5% ~ 15%. In severe cases, the rate of diseased fruit and diseased leaves are both 50% Above, the early leaves off, the disease was abnormal, seriously reducing fruit yield and quality. In order to explore the effective prevention and cure technology of pear scab, we carried out the fixed-point experiment in Yuejiagou pear orchard in Lulong County since 1995 and achieved remarkable results by taking comprehensive measures. The incidence of disease in recent years is about 3% 1% or less, some years basically did not happen. Experience in practice, to do a good job Pear Scab control, need to grasp the following technical