以23个基因型不同的水稻品种为材料,早、晚季齐穗期喷施硒肥,研究硒肥对早、晚季水稻精米和米糠中硒含量变化的影响。结果表明,早、晚季喷施外源硒肥均能显著增加精米和米糠中硒含量;不同的水稻品种对硒的富集能力差异很大;大多数的水稻品种晚季喷施外源硒肥的效果显著优于早季。 Twenty-three genotypes of different rice varieties were used as materials. The selenium fertilizers were sprayed at the early and late seasons, and the effects of selenium fertilizer on the selenium contents in the polished rice and rice bran were studied. The results showed that the application of exogenous selenium in early and late seasons could significantly increase the selenium content in polished rice and rice bran; the ability of different rice varieties to enrich selenium varied greatly; most of the rice varieties were sprayed with exogenous selenium The effect of fertilizer is significantly better than the early season.