中国生态农业学报2012，Vol.20Issue(1)：75-79,5.DOI:10.3724/SP.J.1011.2012.00075
不同化感潜力水稻化感效应与产量的关系
Relationship between allelopathic potential and grain yield of different allelopathic rice accessions
摘要
Abstract
Using rice allelopathy to control weeds in paddy fields is a sustainable bio-engineering technique of the 21st century.The main objective of the study was to analyze the relationship between rice allelopathic potential and its grain yield.To that end,5 different allelopathic rice accessions (allelopathic rice of "PI-1","Taichung Native 1","Azucena","IAC47"; non-allelopathic rice "Le-mont") were analyzed for companion weed biomass and rice grain yield under field conditions in 2008-2010.The results indicated that weed biomass was the highest under non-allelopathic rice "Lemont" and the lowest under allelopathic rice "PI-1".Furthermore,allelopathic rice "PI-1" had the highest and non-allelopathic "Lemont" had the lowest inhibitory effect on weed.Hence allelopathicrice "PI-1" had the highest grain yield and the reverse was true in "Lemont" under non weeding treatment.Allelopathic rice "PI-1" also had the highest while "IAC47" had the lowest grain yield under weeding treatment.The correlation analysis on weed biomass,rice allelopathic potential and rice yield indicated that grain yields of different allelopathic rice accessions were significantly negatively correlated with weed biomass while significantly positively correlated with allelopathic potential.The results suggested that allelopathic rice "PI-1" had the highest inhibition effect on paddy field weeds,the reverse was true in the case of non-allelopathic "Lemont" in the comparison of 5 different allelopathic rice accessions.Without weeding treatment,"PI-1" grain yield also exceeded those of the other rice accessions.Thus rice accession "PI-1" was the strongest allelopathic accession with the highest grain yield among the 5 rice accessions,the reverse was true in the case of "Lemont".关键词
水稻/化感潜力/抑草效应/产量/伴生杂草Key words
Rice/Allelopathic potential/Weed suppression effect/Grain yield/Companion weed分类
农业科技引用本文复制引用
王海斌,俞振明,何海斌,郭徐魁,黄锦文,周阳,徐志斌,林文雄..不同化感潜力水稻化感效应与产量的关系[J].中国生态农业学报,2012,20(1):75-79,5.基金项目
国家自然科学基金项目(30671220,30471028,31070447)、福建高校服务海西建设重点项目(0b08b005)和福建省自然科学基金项目(2007J0304)资助 （30671220,30471028,31070447）
