空心莲子草对水稻生长的影响及其经济阈值研究

【作者】 樊丹； 董文忠； 朱文达； 王红玲；

【机构】 湖北省农业生态环境保护站； 湖北省农业科学院植保土肥研究所； 湖北省农业厅；

【摘要】 "民以食为天",水稻是中国人餐桌上最主要的主食。湖北是我国的粮食主产区,水稻在湖北省农业经济生产活动中占有不可替代的地位。在经济全球化的大趋势下,贸易交流日益频繁,外来入侵生物成为了危胁农业生产的一个重要破坏因子。在水稻的高产栽培体系中,外来入侵杂草的控制是一个非常关键的问题。针对湖北实际,项目组研究了田间条件下空心莲子草对水稻生长及产量性状的影响,以确定水稻田空心莲子草的经济危害允许水平及防除阈值,为空心莲子草的防除提供理论依据。这对水稻田杂草的可持续治理及我国水稻产业的健康发展具有十分重要的意义。本文介绍了系统的试验设置和试验小区的建立,重点阐述了空心莲子草对决定水稻产量的各项指标的影响,例如株高、穗长、有效穗数、千粒重等,并提出了稻田空心莲子草经济危害允许水平,防除阈值等结论。更多还原

【Abstract】 The paddy rice is the most important food on Chinese dining table.Hubei is the main produce area of paddy in China,then paddy rice’s province act for very important position in the economic production of agriculture in Hubei.Under the big trend of economic globalization,the trade exchange is increasingly multifarious.Invading plant creature become a break factor to agriculture.In the paddy rice highly produce cultivation system,it is a key point to controlling the invade grass.Aim at Hubei actual,item studied the Influence to paddy rice growth and yield from the Alternanthera philoxeroides in the field condition.Through these studies, bane of Alternanthera philoxeroides’ to paddy rice will be definitely.This is helpful to assurance the economic bane allow level and defend value of Alternanthera philoxeroides,and provide theories basis to put out the Alternanthera philoxeroides.Moreover,it is helpful to grass sustainable control and keep on the paddy rice industry healthy developing.This article introduced the trial constitution system and establishment experiment 1 area,elaborated the Influence of Alternanthera philoxeroides to paddy rice yield in various index signs,for example rice stub high,rice long,valid rice number,thousand rice grains heavy etc.s,and put forward the economic bane allow level and defend value of Alternanthera philoxeroides in the paddy field.更多还原