Institute of Environment and Ecology and School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China.
School of Chemistry and Chemical Engineering, Zhaotong University, Zhaotong, China.
Int J Phytoremediation. 2021;23(12):1289-1300. doi: 10.1080/15226514.2021.1895715. Epub 2021 Mar 10.
Atmospheric nitrogen (N) deposition (AtNiDe) and drought stress (DS) have strongly affected plant growth. However, previous research has primarily focused on the effects of AtNiDe with various levels and DS on plant growth (especially seed germination and seedling growth). This study aimed to evaluate the single and combined effects of AtNiDe with four types (compounds: NH-N, NO-N, CO(NH)-N, and a mixture of the three types of N) and DS (three levels: control, low, and high) on wheat seed germination and seedling growth. The AtNiDe treatment increased wheat seed germination and seedling growth. Mixed N exerted a greater positive effect on wheat seed germination and seedling growth than single N forms. Organic N also had a greater positive effect on wheat seed germination and seedling growth than reduced inorganic N. The DS treatment decreased wheat seed germination and seedling growth. The AtNiDe treatment alleviated the adverse effects of DS on wheat seed germination and seedling growth. Mixed N had the greatest effect on alleviating the adverse effects of DS on wheat seed germination and seedling growth. Thus, AtNiDe and DS antagonistically affected wheat seed germination and seedling growth. This study assessed the single and combined effects of atmospheric nitrogen deposition with four types and drought stress at three levels on wheat seed germination and seedling growth. Generally, nitrogen and drought antagonistically affected wheat seed germination and seedling growth.
大气氮（N）沉降（AtNiDe）和干旱胁迫（DS）强烈影响植物生长。然而，以前的研究主要集中在不同水平的 AtNiDe 和 DS 对植物生长（特别是种子发芽和幼苗生长）的影响上。本研究旨在评估 AtNiDe 与四种类型（化合物：NH-N、NO-N、CO(NH)-N 和三种类型 N 的混合物）和 DS（三个水平：对照、低和高）对小麦种子发芽和幼苗生长的单一和联合影响。AtNiDe 处理增加了小麦种子的发芽和幼苗的生长。混合 N 对小麦种子发芽和幼苗生长的促进作用大于单一 N 形式。有机 N 对小麦种子发芽和幼苗生长的促进作用也大于还原无机 N。DS 处理降低了小麦种子的发芽和幼苗的生长。AtNiDe 处理缓解了 DS 对小麦种子发芽和幼苗生长的不利影响。混合 N 对缓解 DS 对小麦种子发芽和幼苗生长的不利影响作用最大。因此，大气氮沉降和干旱胁迫对小麦种子发芽和幼苗生长有拮抗作用。本研究评估了大气氮沉降与四种类型和三种水平的干旱胁迫对小麦种子发芽和幼苗生长的单一和联合影响。总的来说，氮素和干旱对小麦种子发芽和幼苗生长有拮抗作用。
