樟子松枯梢病测报技术  

The Forecast Technique of Pinus sylvestris var. mongolica Shoot Blight

作　　者：杨传波 李宝年 庞丽杰 黄敬林 徐树辉 陈金贵 何志强 李耀民 项存悌[3] 郑国强[3] 

机构地区：[1]黑龙江省尚志国有林场管理局,尚志150600 [2]黑龙江省林业厅 [3]东北林业大学

出　　处：《东北林业大学学报》2004年第5期100-102,共3页Journal of Northeast Forestry University

基　　金：1999年黑龙江省林业厅重点课题"樟子松枯梢病防治技术"的研究内容

摘　　要：对黑龙江省尚志市一面坡林场樟子松枯梢病发病区内的固定标准地进行了调查。结果表明 :5月初孢子开始飞散 ,随着平均气温、相对湿度和降雨量的增加 ,孢子的飞散量也逐渐增加。 6月中旬和 6月下旬为初始发病期 ,7月下旬至 8月中旬为发病高峰 ,9月中旬为病害的终止期。气温、相对湿度和降雨 3个因子对病情的发生和发展影响很大 ,气温对病害流行始发期和终止期起决定作用。在适宜的气温范围内 (2 0～ 2 3℃ ) ,病情随时间及相应的气温、降雨量的增加而增加。同时运用逐步回归分析方法 ,建立了多元线性回归预报方程 :y =- 10 .6 +1.2 4 1y0 +0 .2 88t,入选的自变量有初始病情y0 和前月平均气温t两个因子 ,此方程可以预测当年病情指数 (y)。The Scotch pine standard plots in the shoot blight occurring area of Yimianpo Forest Farm of Sangzhi City, Heilongjiang Province were investigated. The results showed that spores disperse at the beginning of May, and spores dispersing increases with average temperature, relative humidity and rainfall. The initial disease developmental stage is from the middle ten days to the last ten days of June, the peak of this disease from the last ten days of July to the middle ten days of August, and the end of this disease is at the middle ten days of September. Temperature, relative humidity and rainfall have great effect on the happening and developing of this disease, and temperature plays a crucial role in the time of occurrence and end of the disease. The disease increases with the increasing of time, temperature and raifall within the suitable scope of temperature (20～23 ℃). The multi-variant linear regression forecasting equation (y=10.6+1.241y 0+0.288t) was established by stepwise regression analysis, and initial disease index and temperature in last month were selected into the model. This equation could forecast disease index for the current year.

关 键 词：樟于松 枯梢病 测报技术 

分 类 号：S791253[农业科学—林木遗传育种] S763.15[农业科学—林学]