[The system of measures for improving ecological stability of agrocoenosis in the conditions of heavy metals contamination]
2005
Kireicheva, L.V. | Mazhaisky, Yu.A. | Ilinskiy, A.V. | Yashin, V.M.(All-Russia Research Inst. of Hydraulic Engineering and Land Reclamation, Moscow (Russian Federation))
Complex of measures for cleaning and detoxication of podzolized black soils, which includes biological cleaning and chemical detoxication with the use of new sorbent-meliorants is suggested. Researches have shown, that leguminous cultures are more tolerant to action of heavy metals, than buckwheat. Carrying out of heavy metals by phytoimprovers at moderately dangerous degree of soil pollution has been observed as the following: for buckwheat in the sum on Cu, Zn, Pb, Cd - 436000 mg/ha, for beans - 1340000 mg/ha. It has been established, that application sorbent-improver SОRBEHКS at the rate of 3,3 kg/m2 promoted increase of oat biomass in all variants of experience more than in 2 times, and also has allowed to lower consumption of heavy metals by biomass oat: Cu - in 2,8; Zn - in 2,6; Pb - in 1,2 times. At entering sapropel and a fertilizing-reclaiming mix productivity of annual grasses has increased for 29% and 34 % accordingly. Application of sapropel at the rate of 1,0 kg/m2 has allowed to lower consumption of heavy metals by biomass annual grasses: Сu - on 12%, Pb - on 37%, Cd - on 34%. At use of a fertilizing-reclaiming mix there was a decrease in heavy metals in biomass of annual grasses: Pb - on 6%, Cd - on 15%
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