一年一度的夏收已经过去。不少农民又像往年一样日省事，将收获后的小麦秸秆付之一炬。熊熊燃烧的麦秸和浓浓烟雾，给农村带来严重危害。一是污染环境。刚收割后的麦秸秆还未干透，湿麦秸不完全燃烧时产生大量氮氧化合物、二氧化硫、碳氢化合物及烟灰碎末飘浮在空气中，造成空 The annual summer harvest has passed. Many peasants, like in previous years, save time and effort, putting the harvested wheat straw to a standstill. Burning straw and thick smoke, bring serious harm to the countryside. First, pollute the environment. Wheat straw just after harvest has not yet dried out, wet wheat straw incomplete combustion produces a large number of nitrogen oxides, sulfur dioxide, hydrocarbons and soot floating in the air, resulting in air