The Effects of Lead on Growth of Some Crops and Its Accumulation in Plants
铅对几种作物生长的影响及其在植物体内的积累

The solution of lead acetate was applied in the soil or spread on the leaves of sweet potatoes and egg-plants grown in pots to investigate its effects, accumulation and translocation within the plants.It was shown that even though very high concentration of lead was treated either in the soil or on the foliage, no visible injury symptoms had been found. It indicated that plants were rather tolerant to lead impact. Lead acetate solution applied in the soil could be absorbed by the roots and most of the lead remained in the roots, and the solutions spread on the leaves could be absorbed by the leaves and most of the lead remained in the leaves. Only a little amounts of lead could be translocated from roots to stems and leaves or from leaves to stems, roots and nontreated leaves. Very little lead was translocated into the fruits of egg-plant and the root tubers of sweet potato especially the edible parts of them (the pulp and starch).