Effects of Magnetic Water Irrigation on the Growth, N Uptake and Antioxidant Enzyme Activities of Cotton Seedlings

• 作者: Guixin Chu Ruixi Zhang Yanfei Sun Yanju Gao
• 来源期刊: 农业科学与技术：B
• 学科: 农学
• 关键词: MAGNETIC water salt stress cotton seedling N uptake enzyme activity.
• 年，卷（期）: nykxjs-b_2017,（1）
• 页码范围: 25-33
• 页数: 9页
• 分类号: S

摘要

A hydroponic experiment was carried out to investigate the effects of magnetic water irrigation on the growth, nutritionalstatus and antioxidant enzyme activity of cotton seedlings. Four levels of magnetic-treated water irrigation （0, 100, 300 and 500 mT）and three levels of salt stress （0, 100 and 200 mM NaCI） were applied. Salt stress adversely affected the dry weight, nutrient uptakeand antioxidant enzyme activities of cotton seedlings. Magnetic-treated water irrigation significantly increased cotton seedling dryweight. Cotton seedling dry weight increased by 14%, 22% and 29% under the treatments of 100, 300 and 500 mT magnetic waterirrigation, respectively, compared with the control, at a salt stress level of 100 mM NaC1. Moreover, magnetic water irrigationimproved N uptake, but did not significantly affect P and K uptake. Magnetic water irrigation significantly increased the activity ofsuperoxide dismutase （SOD）, peroxidase （POD） and the proline content compared to the control （0 roT）. Irrigation with magneticwater could be a promising technique in agriculture, especially under salt stress conditions. A suitable magnetic intensity of 300 mTis recommended.