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研究了有效铅、镉与玉米根、茎、叶的吸收相关性，及有效镉与水稻生长发育和产量的相关性，通过玉米根、茎、叶的伤流、蒸腾等试验，探讨了玉米对铅、镉的吸收和运输机制。水稻体内对镉的积累与分布规律为根＞茎叶＞籽粒，当镉质量比为３２ｍｇ／ｋｇ时，水稻糙米里镉质量比超标，测出了褐土有效镉临界质量比：水稻为５９４ｍｇ／ｋｇ。
The correlations between the available Pb, Cd and the uptake of roots, stems and leaves of maize were studied, and the correlation between available Cd and the growth and yield of rice was also studied. The effects of maize on the trapping and transpiration of maize roots, stems and leaves, Lead and cadmium absorption and transport mechanism. The accumulation and distribution of cadmium in rice were root> stem and leaf> grain. When the mass ratio of cadmium was 32 mg / kg, the ratio of cadmium in rice brown rice exceeded the standard, and the critical mass ratio of effective cadmium in brown soil was measured: 5% for rice 94 mg / kg.