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A pot experiment was carried out to study the effects of mulching with four accumulator plants straws (Trifolium repens, Eclipta prostrate, Conyza canadensis, Stellaria media) on the total phosphorus and total potassium content in Cyphomandra betacea seedlings under cadmium stress. The results showed that all accumulator plants straws could improve the content of total phosphorus in C. betacea seedlings in varying degrees compared with the uncovered. And under cadmium stress, the total potassium content of roots in C. betacea seedlings was lower than uncovered by mulching with T. repens and E. prostrate straws. Other accumulator plants straws all increased the total potassium content of C. betacea seedlings compared with the uncovered. And in all parts of C. betacea seedlings, mulching with S. media straw maximized the total phosphorus and total potassium content in C. betacea seedlings. Therefore, mulching with S. media straw could significantly promote the nutrients uptake of C. betacea seedlings under cadmium stress.

Effects of Mulching with Accumulator Plants Straws on Nutrients Uptake of Cyphomandra betacea Seedlings under Cadmium Stress