不同种植区库尔勒香梨叶片滞尘能力初探

Dust Retaining Capability of Korla Fragrant Pear Leaves in Different Planting Areas

为研究库尔勒不同种植区香梨叶片的滞尘规律,以库尔勒香梨为研究对象,通过扫描电镜观察分析叶片表面颗粒物的特征,并采用称重法对叶片的滞尘量进行测定。结果表明,库尔勒市3个乡镇的自然降尘量排序为普惠[(4.693±0.555)mg/cm2]>上户[(1.866±0.281)mg/cm2]>哈拉玉宫[(1.580±0.186)mg/cm2],滞尘能力由大到小排序为哈拉玉宫(4.555 mg/cm2)>上户(3.422 mg/cm2)>普惠(3.369 mg/cm2)。自然降尘量和叶片滞尘量的关系表明,叶片的月滞尘累积量大部分大于当月的自然降尘量,说明库尔勒香梨叶片易吸附降尘,易受到沙尘的伤害。

In order to research the leaf dust retaining capability of different planting areas, the authors took Korla fragrant pear as the study subject, and analyzed the characteristics of dust particle of leaf surface by using scanning electron microscopy and measured dust retaining capability by weigh method. The results showed that the order of natural descended particle of three townships in Korla was Puhui [（4.693 ± 0.555） mg/cm^2] 〉 Shanghu [（1.866±0.281） mg/cm^2] 〉 Harayulghon [（1.580±0.186） mg/cm^2], and the order of dust retaining capability was Harayulghon （4.555 mg/cm^2） 〉 Shanghu （3.422 mg/cm^2） 〉 Puhui （3.369 mg/cm^2）. between natural dust-fall amount and leaf dust retaining amount showed that the monthly d amount of leaf was more than monthly natural dust-fall amount, indicating that the leaf of Korla could easily absorb dust and sand.