Helminthosporium of brown spot of rice

例句：

1. 1.The brown spot on the rice caused by Helminthosporium is a major concern for farmers.
   由霉菌引起的水稻上的褐斑是农民们的一个主要担忧。
2. 2.The fungus that causes this disease is known as Helminthosporium.
   这种疾病是由一种名为霉菌的真菌引起的。
3. 3.To prevent the spread of this disease, it's important to control the growth of Helminthosporium in the field.
   为了预防这种疾病的传播，控制田间霉菌的生长是很重要的。