通过对2 5 %阿米西达SC防治苹果斑点落叶病进行田间药效试验。
The control effect of 25% Amistar SC on apple Alternaria leaf spot were tested in field.
由多主棒孢引起的巴西橡胶棒孢霉落叶病是我国天然橡胶生产的潜在威胁。
Corynespora leaf-fall disease of hevea rubber, caused by Corynespora cassiicola, is a newly found disease of hevea rubber in China, which threatens to Chinese natural rubber industry.
其组合物可防治农业上较难防治的苹果斑点落叶病，而且使用方便、省工省时。
The compound can control an alternaria mali that is hard to be controlled in agriculture and has the advantages of convenient use as well as labor and time saving.
本发明组合物用于果树、小麦、蔬菜等作物的病害防治，尤其是白粉病、黑星病、斑点落叶病等重要真菌病害。
The composite is used for disease control of crops of fruit trees, wheat, vegetables, and the like, especially the important nosomycosis of powdery mildew, scab, cork spot, and the like.
早霜、晚霜、松毛虫、叶蜂及落叶松早期落叶病等都能直接影响鞘蛾食物的质量和数量，进而间接地使鞘蛾种群密度降低。
Early and late frost, Dedrolimus superans, sawfly and needle cast of larch could reduce the quality and quantity of foods of larch casebearer and had indirect effects on its population density.
在英国，官方称这种病为“栎猝死病”，它放过了栎树，却传播到北美杜鹃花和日本落叶松上。
In Britain the disease, officially known as phytophthora ramorum, spared oaks and jumped to rhododendrons and Japanese larch trees.
目前还没治愈这种病的方法，MrClark警告说东南部的日本落叶松可能会全军覆没。
There is no known cure for the disease and Mr Clark warned that Japanese larch could be wiped out in the South West.
一种北美落叶树(美洲榆)，有双齿叶和双翼果，主要作为观赏性浓荫树，但常患荷兰榆树病而坏死。
A North American deciduous tree (Ulmus Americana) having double serrate leaves and winged fruits. It is grown chiefly as an ornamental shade tree but often dies from Dutch elm disease.
一种北美落叶树(美洲榆)，有双齿叶和双翼果，主要作为观赏性浓荫树，但常患荷兰榆树病而坏死。
A North American deciduous tree (Ulmus Americana) having double serrate leaves and winged fruits. It is grown chiefly as an ornamental shade tree but often dies from Dutch elm disease.
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