华南农业大学学报2018，Vol.39Issue(4)：25-32,8.DOI:10.7671/j.issn.1001-411X.2018.04.005
水分和密度对化感水稻产量、品质及籽粒中Pb、Cd含量的影响
Effects of water managements and planting densities on allelopathic rice yields,qualities and the contents of Pb and Cd in rice grains
摘要
Abstract
[Objective]To investigate the relationships of the yields,qualities and heavy metals contents of allelopathic rice with water managements and planting densities,and make better use of environmentally friendly characteristics of allelopathic rice.[Method]The rice materials,including 'Allelopathy rice No.3','Hualiangyou 78','Yuxiangyouzhan' in early season and 'Baixiangzhan' in late season,were cultivated under two different water managements(WN: paddy field drainage during booting stage,WS: paddy field continuous irrigation during booting stage)and two different planting densities(DH: high planting density,DN: local planting density).And then their yields,qualities,and Pb and Cd contents in grains were investigated.[Result]The rice yields and qualities had no significant differences in different water and density treatments,but differed among rice cultivars.'Hualiangyou 78' yield was the highest in all materials.WSDN treatment significantly reduced the milled rice percentage of 'Baixiangzhan',but had no significant effect on allelopathic rice cultivars.WS treatment reduced the contents of Pb and Cd in rice grains,especially the contents of Cd in allelopathic rice cultivars.The planting densities and rice cultivars had no significant effect on Pb and Cd contents in rice grains.[Conclusion]Both water and density treatments have no significant effect on yields and qualities of allelopathic rice materials,but WS can significantly reduce the Cd contents of allelopathic rice grains.关键词
化感水稻/水分管理/种植密度/稻米品质/Pb/CdKey words
allelopathic rice/planting density/water management/rice quality/Pb/Cd分类
农业科技引用本文复制引用
李奇,吴在敬,林芳源,胡飞..水分和密度对化感水稻产量、品质及籽粒中Pb、Cd含量的影响[J].华南农业大学学报,2018,39(4):25-32,8.基金项目
2017年省级农业农村工作专项(粤农耕肥[2017]32号) （粤农耕肥[2017]32号）
农业部公益性行业(农业)专项(201403030) （农业）
