[Characteristics and Sources of Dissolved Heavy Metals in Summer Precipitation of Taiyuan City, China].

To investigate the characteristics and sources of dissolved heavy metals in precipitation of Taiyuan, 61 precipitation samples were collected using an automated dry and wet sampler from 2013 to 2015 during summertime. The concentrations of 12 dissolved heavy metals were detected using ICP-MS, and wet deposition fluxes and sources were analyzed. The results showed that the pH ranged from 4.

[Effects of nitrogen form on growth and quality of Chrysanthemums morifolium].

This paper is aimed to study the effects of nitrogen form on the growth and quality of Chrysanthemums morifolium at the same nitrogen level. In order to provide references for nutrition regulation of Ch. morifolium in field production, pot experiments were carried out in the greenhouse at experimental station of Nanjing Agricultural University.