摘要
为了筛选出适合湘西自治州推广的重金属低吸收水稻品种,从当地主推品种和湖南省应急性镉低积累水稻品种清单中选取16个水稻品种,于2021年在花垣县开展重金属低积累水稻品种筛选试验,主要考察参试水稻品种的重金属(镉、砷)富集系数和产量。结果表明:16个参试水稻品种的镉超标风险系数由高到低排列依次为晶两优534、晶两优华占(中风险Ⅲ),东两优丰占、泓两优503、隆两优华占、冠两优华占、泸优9803、创两优丰占、C两优755、两优336、Y两优9918、悦美占、Y两优2108、和两优1号(低风险Ⅱ),隆两优1308、隆两优1212(无风险Ⅰ);砷超标风险系数由高到低排列依次为隆两优1308、和两优1号(高风险Ⅳ),C两优755、两优336、悦美占、创两优丰占、泓两优503、Y两优9918、泸优9803、东两优丰占、隆两优华占、隆两优1212、冠两优华占、晶两优华占、晶两优534、Y两优2108(中风险Ⅲ);实际产量最高的是创两优丰占(12003 kg/hm2),最低的是泓两优503(9391 kg/hm2),其中泓两优503、悦美占、C两优755减产显著。综合考量3种因素后,建议在湘西自治州水稻品种布局时将隆两优1212、Y两优2108列入推荐名录,将创两优丰占、两优336、隆两优华占列入一般名录,将泓两优503淘汰出目录,其余品种列入观察名录。
To screen out rice varieties with low accumulation of heavy metals for promotion in Xiangxi Autonomous Prefecture,16 rice varieties consisting of the local main cultivars and ones selected from Hunan emergency low Cd accumulation rice variety list were involved in the 2021 screening experiment conducted in Huayuan County.The grain yield and bioconcentration factors of heavy metals(cadmium and arsenic)in the rice varieties were mainly investigated.The results showed that according to risk coefficients of Cd exceeding the standard from high to low,the 16 varieties were in order of middle riskⅢ:Jing Liangyou 534>Jing Liangyou Huazhan>low risk II:Dong Liangyou Fengzhan>Hong Liangyou 503>Long Liangyou Huazhan>Guan Liangyou Huazhan>Luyou 9803>Chuang Liangyou Fengzhan>C Liangyou 755>Liangyou 336>Y Liangyou 9918>Yuemeizhan>Y Liangyou 2108>He Liangyou No.1>no riskⅠ:Long Liangyou 1308>Long Liangyou 1212.The varieties with risk coefficients of As exceeding the standard from high to low was in order of high riskⅣ:Long Liangyou 1308>He Liangyou No.1>middle riskⅢ:C Liangyou 755>Liangyou 336>Yuemeizhan>Chuang Liangyou Fengzhan>Hong Liangyou 503>Y Liangyou 9918>Luyou 9803>Dong Liangyou Fengzhan>Long Liangyou Huazhan>Long Liangyou 1212>Guan Liangyou Huazhan>Jing Liangyou Huazhan>Jing Liangyou 534>Y Liangyou 2108.Among them,Chuang Liangyou Fengzhan produced the highest practical yield of 12,003 kg/hm2,the lowest was Hong Liangyou 503(9,391 kg/hm2),while Hong Liangyou 503,Yuemeizhan and C Liangyou 755 significantly decreased in yield.Comprehensively considering the above three factors,Long Liangyou 1212 and Y Liangyou 2108 with low accumulation of Cd and As without yield reduction are recommended as the preferred promotion varieties of Xiangxi Autonomous Prefecture rice varietal arrangement,Chuang Liangyou Fengzhan,Liangyou 336 and Long Liangyou Huazhan are listed in the ordinary catalogue,Hong Liangyou 503 is eliminated from the catalogue,and the others are listed in the observed list.
作者
韩瑜
彭勃
刘庭云
麻庆
彭源
HAN Yu;PENG Bo;LIU Ting-yun;MA Qing;PENG Yuan(Xiangxi Agricultural Science Research Institute,Jishou 416000,PRC)
出处
《湖南农业科学》
2023年第6期7-10,共4页
Hunan Agricultural Sciences
基金
世行贷款湖南省农田污染综合管理项目(P153115)。
关键词
重金属低积累
水稻
品种筛选
镉
砷
富集系数
产量
low accumulation of heavy metals
rice
varietal screening
cadmium
arsenic
bioconcentration factors
yield
