摘要
试验结果表明:在紫薇萌动和抽梢期,用新型物理防病保护剂——无毒高脂膜1:100倍叶面喷雾,每10—15天一次,连续喷三次效果较好。由于此药剂无毒无臭味,而且在叶面上不留痕迹,这对园林观赏植物的化学防治尤为重要。可以替代传统的石硫合剂。在紫薇白粉病流行期,用粉锈宁1:1000倍叶面喷雾效果也很好。环沟施用向顶性的内吸杀菌剂—粉锈宁和甲基托布津。其残效期分别为24天和33天,较叶面喷雾残效期长。同时又减少了对环境的污染,在城市绿化带和风景名胜区是一种可以推广的施药方法。
During the period of crapemyrtle spouting and growing out its new shoots, Gao-zhi-mo'…a new protective fungicide×100, which was sprayed one time for every 10 to 15 days, showed better protective effect than that of limesulphur after three times continuously. As the powdery mildew of crapemyrtle prevailed, if Bauleton (Triadimefon) was sprayed, the epidemic of the powdery mildew would be controlled. Mixing 10g of 70％ Topsin-M (or 10g of 15％ Triadimefon)and 200g moist soil and dusting them into a furrow around the diseased tree showed better control effect than spraying the same chemical fungicides.
出处
《西南林业大学学报（自然科学）》
CAS
1987年第2期25-29,共5页
Journal of Southwest Forestry University：Natural Sciences
关键词
紫薇白粉病
化学防治
Uncinuliella australiana McAlp.
Chemical control
