Accumulation and translocation of lead in soil-crop system of green food production

Abstract

Abstract: In this paper,the accumulation and translocation of lead in soil-crop ecosystems were studied through fertilization with chemical fertilizer,manure and bio-fertilizer.The results showed that the soil total Pb content was decreased with soil depth.It was 11.14 and 9.37 mg·kg^-1 in 0～15 and 15～30 cm after harvest,respectively.Rice root absorbed lead from soil,and transferred it to stem-leaf and grain.The Pb content in rice plant was root>stem and leaf>grain,which was increased with rice growth.The grains of 606-14 and Liao 294 contained 0.008 and 0.007 mg·kg^-1 of Pb,respectively,which is under the standard of green food.Variance analysis indicated that the grain yield of different varieties had a significant variance,but no significant variance was found among different treatments.It could be summarized that manure or bio-fertilizer could be the substitute of chemical fertilizer in producing rice.

Key words: Green food, Rice, Soil, Lead, Accumulation and translocation

CLC Number:

X171

LI Liguang, HE Xingyuan, CAO Zhiqiang, CHEN Wei . Accumulation and translocation of lead in soil-crop system of green food production[J]. Chinese Journal of Applied Ecology, 2004, (5): 891-894.

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