摘要
研究了不同时间紫外线照射对黄瓜白粉病的防治效果。结果表明：紫外线防治黄瓜苗期白粉病，照射时间长孢子萌发率低，相对防治效果好，但对寄主影响大。紫外线照射时间越长，对白粉菌孢子的致死效果越好，随着照射次数的增加，致死率逐渐增加，但始终达不到100％，如每次处理时间30min，每天处理1次，4～7d孢子的致死率分别是95．5％、97％、97％、98％。紫外线每次照射时间越长，照射次数越多，病情指数在照射前后变化越小，说明每次处理时间越长，处理次数越多，防病效果越好。但对黄瓜苗生长有一定的影响。
The control effect of ultraviolet irradiation on cucumber powdery mildew was studied. The results showed that the control effect was better under longer irradiation time, but excessive irradiation time had bad effect on cucumber. The longer irradiation time, the better lethal effect was on powdery mildew. When the powdery mildew was treated for 30 minutes by ultraviolet irradiation at a time daily from 4th to 7th ,the lethal ratio was 95. 5%, 97%, 98% respectively. The more UV radiation time,the more times,the smaller change of disease index was. It showed that the effect of prevention and cure increased with the increased irradiation time and times. But ultraviolet irradiation had some interfere with cucumbers growth.
出处
《北方园艺》
CAS
北大核心
2010年第1期188-189,共2页
Northern Horticulture
关键词
紫外线
防治
黄瓜
白粉菌
ultraviolet
prevention
cucumber
powdery mildew
作者简介
张富荣（1972-），女，硕士，讲师，现从事植物病理学教学与研究工作。E-mail：cyc758@yahoo．com．cn。
