【摘要】 对嘉善县水稻土和稻米的硒含量进行了分析.水稻土的有效态硒含量为9.52±2.26ppb,稻米硒平均为0.029±0.006ppm,普遍低于0.040ppm.提高稻米硒的田间试验表明,在水稻齐穗期喷施20ppm亚硒酸钠,可使稻米硒水平提高3～4倍,早、晚稻的稻米硒含量分别为0.197±0.149ppm和0.153±0.101ppm.更多还原

【Abstract】 This paper elucidates that the main reason of extensive seienium inadequancy in rice (≤0.04ppm) is thelow content of effective selenium in paddy soils (<10ppb) in Jiashan County according to the measurementsof selenium content of paddy soils and rice grain. A method of raising selenium level in rice grain by foliarsprays with sodium selenite solution is put forward.更多还原