CAJ | 학술논문

为筛选出适合于当地种植的砷(As)低累积水稻品种,并研究水稻不同器官间As的富集迁移.在As严重污染农田上进行田间小区试验,研究了13个不同水稻品种对As的富集作用及其不同部位对As的累积迁移能力.结果表明:①所有水稻品种精米中As含量均低于国家绿色大米卫生标准中As含量(0.4 mg/ks)和无公害大米标准中As含量(0.5 mg/ks),其中南粳41精米中As含量较高(0.38 mg/ks),武粳15精米中As含量最低(0.10 ms/kg).②不同水稻品种间产量差异较大,扬稻6号产量最高,宁粳3号产量最低;③13个水稻品种不同部位As含量均为:根>茎叶>谷壳>精米,As主要在根部累积;④在本试验条件下(土壤中As含量为72.2 mg/ks),综合考虑产量及对As的吸收累积和迁移能力,供试的13个水稻品种中武粳15、武育粳3号、南梗44以及武香粳14为相对A8低累积水稻品种.
위사선출괄합우당지충식적신(As)저루적수도품충,병연구수도불동기관간As적부집천이.재As엄중오염농전상진행전간소구시험,연구료13개불동수도품충대As적부집작용급기불동부위대As적루적천이능력.결과표명:①소유수도품충정미중As함량균저우국가록색대미위생표준중As함량(0.4 mg/ks)화무공해대미표준중As함량(0.5 mg/ks),기중남갱41정미중As함량교고(0.38 mg/ks),무갱15정미중As함량최저(0.10 ms/kg).②불동수도품충간산량차이교대,양도6호산량최고,저갱3호산량최저;③13개수도품충불동부위As함량균위:근>경협>곡각>정미,As주요재근부루적;④재본시험조건하(토양중As함량위72.2 mg/ks),종합고필산량급대As적흡수루적화천이능력,공시적13개수도품충중무갱15、무육갱3호、남경44이급무향갱14위상대A8저루적수도품충.
Field experiment was conducted to study the accumulation and migration of heavy metal element As in thirteen rice cuhivars in order to select the lowly As-accumulated rice eultivars. The As contents in the milled grains of all cultivars were less than those of the National Green Rice Standard ( 0. 4 mg/kg) and Nuisanceless Rice Standard (0. 5mg/kg), the milled grains of Nanjing 41 accumulating the highest contents of As (0. 38 mg/kg) and Wujing 15 accumula-ting the lowest (0. 10 mg/kg). Yields in rice varieties showed significant differences, Yangdao 6 and Ningjing 3 occupying the highest and lowest outputs. The accumulation of As in different organs of thirteen rice cultivars were showed as follows: root>stem and leave>chaff>milled grain. The ac-cumulations of As in Wujing 15, Wuyujing 3, Nanjing 44 and Wuxiangjing 14 are relative lower in thirteen rice culti-vats, with yield and capability to absorb and transport As taken into account.