摘要
本项研究根据气候生态条件,将四川油桐根腐病发生地域,区划为重病区,发病区和无病区。同时,从土壤生态条件出发,将病害发生的林地类型划分为4个序列:Ⅰ类严重受害的油桐钙质紫色土林地,Ⅱ类中等受害的油桐中性紫色土林地,Ⅲ类轻度受害的油桐中性紫色土林地和Ⅳ类无病的油桐酸性紫色土林地。在重病区Ⅰ类严重受害林地上,建立了大面积综合控制试验林1140亩。1982～1987年连续采用以“栽植良种,增强抗性”为前提,“灌施药液,酸化土壤”为基础的营林生态防治方法,效果显著。文中就四川油桐生产全局,对战略和策略控制此病进行了探讨。
Root-rot of tung-oil tree caused by Fusarium solani f. sp. aleuritidis Chen et Xiao, is a new and serious root disease in Sichuan. According to the climate-ecological feature of the main tung-oil tree production areas in Sichuan, the disease development zones were divided into 3 parts, i. e. Seriously-infected, generally-infected and noninfected areas. Based on the soil-ecological feature, the different stand condition of disease dovelopment may be grouped into the following 4 series: 1 ) the seriously-damaged tung-oil stand (pH 7.3～8.3), 2) moderately-damaged tungoil stand (pH 6.5～7.3), 3) lightly-damaged tung-oil stand (pH 6～7) and 4) nonifected tung-oil stand (pH 5～6). In the seriously-damaged tung-oil tree stand, the large scale trials with planting resistance trees in combination with fungicidal treatment showed that silviculture-ecological control had a good effect. In the stands of the 2nd and 3rd groups, the disease can be effectively prevented by planting resistant trees.
出处
《西南林学院学报》
1989年第2期141-152,共12页
Journal of Southwest Forestry College
关键词
油桐
根腐病
综合防治
tung-oil tree
Root-rot of tung-oil tree
Silviculture-ecological control
