生态环境学报2017，Vol.26Issue(3)：371-378,8.DOI:10.16258/j.cnki.1674-5906.2017.03.002
水稻化感品种和非化感品种对稗草伴生的响应差异
Differences between Allelopathic and Non-allelopathic Rice in Responses to Competiting Barnyardgrass
摘要
Abstract
It is an effective way to develop integrated and ecological security weed management to control weedy rice using crop allelopathic varieties.However,there are few studies on the effects of allelopathy on competition in rice-barnyardgrass coexistence.We studied the resource competition ability of allelopathic rice and non-allelopathic rice compared to bamyardgrass using biomass,morphological plasticity,nutrient contents of plant and root zone soil in monoculture and mixed-culture in the field to test whether there were differences between allelopathic and non-allelopathic rice in response to competing bamyardgrass.When mixed with barnyardgrass,there was the increase of root biomass and leaf area of allelopathic rice,and decrease of biomass and leaf area of non-allelopathic fice.Mixed-culture with allelopathic rice did not lead to significant differences in morphological characteristic and nutrient content of bamyardgrass.However,there were significant increase of height,biomass,and leaf area of bamyardgrass in mixed-culture with non-allelopathic rice.Soil ammonium nitrogen in root zone and nitrogen content of allelopathic rice increased in presence of bamyardgrass,while non-allelopathic rice had lower nitrogen content of plant in mixed-culture with bamyardgrass than in monoculture.Allelopathic rice had more relative competitive ability and nutrient competition ratio of rice to bamyardgrass compared to non-allelopathic rice.All these results indicate morphological plasticity and effects on soil nutrient content in root zone of allelopathic rice improve its ability to compete with neighboring barnyardgrass compared to non-allelopathic rice.关键词
化感作用/形态特征/养分含量/水稻/稗草Key words
allelopathy/morphological plasticity/soil nutrient content/rice/barnyardgrass分类
农业科技引用本文复制引用
孙备,苏本卿,郭伟,王国骄,周斌..水稻化感品种和非化感品种对稗草伴生的响应差异[J].生态环境学报,2017,26(3):371-378,8.基金项目
国家自然科学基金项目(31600350) （31600350）
辽宁省科学技术计划博士启动基金项目(201501061) （201501061）
辽宁省教育厅科学技术研究计划项目(L2015486) （L2015486）
