通过盆栽试验，在覆盖少花龙葵各器官秸秆的人工施镉土壤中种植树番茄幼苗，研究覆盖少花龙葵秸秆对树番茄幼苗生长及镉积累的影响。结果表明，与未覆盖相比，土壤覆盖少花龙葵各器官秸秆均能提高树番茄幼苗的生物量和光合色素含量，降低其根系和地上部分的镉含量。土壤覆盖少花龙葵根系、茎秆和叶片秸秆后，树番茄根系镉含量分别较未覆盖减少25.32%、15.71%和21.73%，地上部分镉含量分别较未覆盖减少13.73%、10.50%和11.76%。此外，土壤覆盖少花龙葵各器官秸秆也提高了树番茄的镉转运系数。覆盖少花龙葵秸秆后，土壤pH值较未覆盖显著提高，但土壤有效态镉含量显著降低。因此，土壤覆盖少花龙葵秸秆能够促进树番茄幼苗的生长，提高其光合色素含量，降低根系及地上部分镉含量，其中，以覆盖少花龙葵根系秸秆效果最佳。

To study the effects of mulching with Solanum photeinocarpum straw on cadmium (Cd)accumulation of Cyphomandra beracea seedlings,the pot experiment was carried out by mulching roots,stems and leaves straw of S.photeinocarpum on soil under Cd stress.The results showed that mulching straw on soil increased the biomass and photosynthetic pigment content of C.beracea seedlings,decreased the Cd contents in roots and shoots of C.beracea seedlings.Compared with the control,mulching with the root,stem and leaf straws of S.photeinocarpum decreased the Cd contents in roots of C.beracea seedlings by 25.32%,15.71% and 21.73%,respectively,and decreased the Cd contents in shoots by 13.73%,10.50% and 11.76%,respectively.In addition,mulching straw also increased the Cd translocation factor of C.beracea seedlings,the soil pH value increased significantly,but the exchangeable Cd content decreased.Therefore,mulching S.photeinocarpum straw on soil promoted the growth of C.beracea seedlings,increased the photosynthetic pigment content,and reduced the Cd contents in roots and shoots,and the root straw was the best.