一、农田杂草概况经调查,呼盟农田杂草共计60科448种,其中蕨类植物门1科1种,占O.22％;种子植物门中双子叶植物纲43科337种,占75.22％;单子叶植物纲16科110种,占24.55％。在已调查到的农田杂草种类中,有98％以上种类为当地植物区系种,外来植物种类不多。农田杂草与农田周围的种类有直接关 A survey of farmland weeds By investigation, a total of 448 kinds of weeds in Huhhot farmland, of which there are 1 families and 1 species of fern, occupying O.22% of the total; 43 families and 337 families of dicotyledonous plants in the seed plant door, accounting for 75.22%, Monocotyledons, 16 families and 110 species, accounting for 24.55%. Among the types of farmland weeds that have been investigated, more than 98% of the species are endemic to the area, and there are not many exotic plants. Farmland weeds and farmland around the species are directly related