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毛白杨是我地区优良乡土树种,生长快,材质好,树形美观,深受群众欢迎。近年来,煤污病在毛白杨苗圃和幼树上普遍发生,造成早期落叶,影响植株生长。发病严重时,叶片落光,顶梢枯萎,个别导致植株死亡。 我场“三结合”科学试验小组,从生产需要出发,近两年来,对毛白杨煤污病的发生发展,进行了观察;同时,还进行了多种农药防治实验,从而取得了一定效果。下面将我们实验的初步结果。简单介绍如下:
Populus tomentosa is an excellent local tree species in my area, grow fast, good material, beautiful tree, welcomed by the masses. In recent years, coal pollution is common in poplar nurseries and saplings, causing early deciduous leaves and affecting plant growth. When the disease is serious, the leaves fall off and the top shoots wilt, causing the plants to die individually. Our field “three combination” scientific experiment team, starting from the production needs, the past two years, the occurrence and development of coal poplar coal stains were observed; the same time, also conducted a variety of pesticide control experiments, and achieved some results. Below will be our preliminary results of the experiment. Brief introduction is as follows: