关键词: 水稻, 土壤, 硒, 循环转化, 吸收积累

Abstract: This paper estimates the potential preductivity of livestock husbandry and analyzes its regionaldistribution on the basis of statistical data of agricultural resources investigation and experimentaldata at different sites. Through analysis of the livestock population structure and variety, mea-sures for exploiting the potential preductivity of livestock husbandry are put forward.

Key words: rice, soil, selenium, cycling and transformation, absorption and accumulation.