广西植物Issue(5)：681-685,621,6.DOI:10.3969/j.issn.1000-3142.2014.05.018
氮肥运筹对免耕水稻根系生长、根际土壤特性及产量的影响
Effect of different nitrogen application modes on root growth,rhizosphere soil characteristics and rice yield under no-tillage
摘要
Abstract
The effect of nitrogen application modes on root growth,rhizosphere soil characteristics and rice yield under no-tillage and cast transplanting rice was studied.The results showed that balanced fertilization made obvious influ-ence on no-tillage and cast transplanting rice root growth,and physiology.The rice shoot dry weight and biomass per plant,root number,root density,root activity of balanced fertilization were higher than other treatments,the differ-ences were significant in rice later growth.However,there were no significant differences in root length.Balanced fer-tilization increased spike lets per panicle and seed set.Balanced fertilization significantly increased 0-10 cm soil layers organic,available nitrogen and urease activity of 0-2 mm rhizosphere soil in rice late growth.Therefore,it can been concluded that balanced fertilization acquired higher grain yield by improving rhizosphere soil,promoting root growth and increasing effective panicles.关键词
氮肥运筹/免耕水稻/根系生长/根际土壤/产量Key words
nitrogen application modes/no-tillage rice/root growth/rhizosphere soil/yield分类
农业科技引用本文复制引用
张玉,秦华东,黄敏,江立庚,徐世宏..氮肥运筹对免耕水稻根系生长、根际土壤特性及产量的影响[J].广西植物,2014,(5):681-685,621,6.基金项目
国家自然科学基金(30560066) （30560066）
广西自然科学基金(0832008Z,0991010Z,0640020) （0832008Z,0991010Z,0640020）
国家现代农业产业技术体系专项(广西水稻创新团队) （广西水稻创新团队）
