主要技术内容:4　质量要求4.1　产地环境选择适合种植，并能持续生产富硒水稻的农田作为生产基地，基地环境质量应符合 NY/T 391 的规定。有机产品应符合GB/T 19630的要求。4.2　投入品生产过程中农药、肥料使用应分别符合NY/T 393和NY/T 394的要求。有机产品应符合GB/T 19630的要求。4.3　原材料富硒稻谷原料应符合GB 1350、GB/T 22499的规定；绿色食品应符合NY/T 419的规定。4.4　生产加工生产用水应符合GB 5749的规定；生产加工过程应符合GB 13122和GB 14881的规定。4.5　分级依据大米质量指标中碎米总量、加工精度、不完善粒含量和硒含量的不同分为特级、一级、二级三个产品等级。4.6　富硒大米质量指标4.6.1　富硒大米感官指标应符合表1的规定。表1　富硒大米感官指标项目                                                     　要求　                                                                           检验方法色泽　                                               具有正常粮食的色泽                                                    　GB/T 5492气味　                                              具有正常粮食的气味，无异味                                         　GB/T 54924.6.2富硒大米质量指标应符合表2的规定。表2　富硒大米质量指标指标类型               项目                                   　要求　                                                                              检验方法特级　一级　二级理化指标　        碎米总量，%                           ≤　10　12　15                                                  　GB/T 5503加工精度　                             精碾　精碾　适碾 　                                               GB/T 5502不完善粒含量/%                       ≤　2.0　3.0　5.0                                           　          GB/T 5494杂质总量，%                           ≤　0.25                                                                 GB/T 5494垩白粒率，%                         ≤         7　                                                                   NY/T 83垩白度，%                                                ≤　3.0　                                                                   NY/T 83胶稠度，mm                                          ≥　60.0                                                       　         NY/T 83碱消值，级                                                ≥　6.0　                                                                   NY/T 83水分，%                                                 ≤     14.5                                                               　GB 5009.3直链淀粉含量（干基），%                         ≤　13.0～22.0　                                                GB/T 15683特征指标　硒含量（以Se计）/（mg/100g）　0.25～0.30  0.20～0.24　0.15～0.19　      GB 5009.93有机硒（占总硒的百分比），%                    ≥　80.0　                                                              DB36/T 12434.7　食品添加剂本产品未使用任何食品添加剂。4.8　真菌毒素限量真菌毒素应符合GB 2761的规定。4.9　污染物限量污染物中镉的限量应符合表3中的规定，其他污染物限量应符合GB 2762的规定。表3　污染物限量指标项   目　                                                          指   标                                            　检验方法镉(以Cd计)，mg/kg                                             ≤　0.2                                                   GB 5009.154.10　农药残留量农药最大残留限量应符合GB 2763的规定