干旱地区农业研究2013，Vol.31Issue(1)：133-139,7.
兰州市城市污泥施用对玉米生理特性的影响
Effects of municipal sewage sludge on physiological properties of three varieties of maize in Lanzhou
摘要
Abstract
The application of sewage sludge on agricultural soils is a promising disposal and utilizable method to improve soil properties and increase plant productivity. The experimental results showed that three varieties of maize( Feng-shi 88, Shendan 16, and Fengshi 9713)could grow well and the miaze biomass increased significantly after sewage sludge application (the dry weight ratio of sludge to the mixed soil of 5%, 10%, 15%, 25%, 35%). With land application of sewage sludge, the total chlorophyll of three varieties of maize increased at first, and then decreased. The leaf proline content of three varieties of maize showed a big increase after sewage sludge application compared with the control treatment, but a threshold value did not appear. The leaf MDA content of three varieties of maize all increased. However, 'Fengshi 88' had the largest increment, while 'Shendan 16' increased the least. Maize hightened the protective enzyme activity and the content of adjusting osmotic substance to alleviate the oxidative damage to membrane lipid by sludge. The contents of Pb, Cu, and Zn in the soil increased with the increase of sewage sludge application, but not exceeding the standards of soil environmental quality for Grade Ⅱ (GB15618 - 1995). The contents of Pb, Cu, and Zn in the soil had significantly positive correlation with the contents of proline and MDA in the leaves of three varieties of maize. When sludge application rate was less than 25%, maize showed strong adaptability and tolerance.关键词
污泥/玉米/叶绿素/脯氨酸/丙二醛Key words
sewage sludge/ Zea mays/ chlorophyll/ praline/ MDA分类
资源环境引用本文复制引用
戴亮,任珺,陶玲,宋小三..兰州市城市污泥施用对玉米生理特性的影响[J].干旱地区农业研究,2013,31(1):133-139,7.基金项目
甘肃省自然科学基金(1208RJZA233) （1208RJZA233）
甘肃省自然科学基金(1014RJZA043) （1014RJZA043）
甘肃省自然科学基金(0916RJZA035) （0916RJZA035）
