降尘

shòu jiàng chén yǐng xiǎng de mián huā yè piàn de yè lǜ sù hán liàng dī ér qí tā liǎng zhǒng chù lǐ fāng shì de mián hua yè piàn de yè lǜ sù hán liàng chā yì bù dà

受降尘影响的棉花叶片的叶绿素含量低，而其它两种处理方式的棉花叶片的叶绿素含量差异不大。

Contaminated cotton leaves had low chlorophyll contents, the difference of chlorophyll content in cotton leaves from the other two treatments were not distinct.