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1982年我们在观察羊草(Leymus chin-ensis)穗的分化过程时,在小穗原基上偶然观察到长约600微米左右、呈蠕虫状的幼虫,后经鉴定为线虫病。这种线虫属粒线虫,主要危害籽实,使幼嫩的子房最后变成含有几千条幼虫及部分虫卵的虫瘿。是造成羊草结实率低的一个原因。这种线虫病对羊草危害较严重,特别对籽实。1983年我们在内蒙古农牧学院草原试验站种植的羊草,受线虫病感染严重的地块发病率高达30%以上(生殖枝),遭线虫病危害的小花占小花总数的20.3%,个别病穗虫
In 1982, when we observed the differentiation process of Leymus chin-ensis spike, we observed a worm-like larva approximately 600 microns in length on the spikelet base, which was later identified as nematode disease. The nematode is a nematode that infects the young ovary and eventually becomes a worm that contains thousands of larvae and some eggs. Is caused by a low rate of fruiting bodies of Leymus. This nematode disease more serious on the Leymus chinensis, especially on the seeds. In 1983 we Inner Mongolia College of Agriculture and Grassland Grassland Experimental Station planting Leymus chinensis, infected by nematode disease in the block of the incidence of up to 30% (reproductive branches), nematode-borne diseases accounted for 20.3% of the total number of small flowers, individual disease Earworms