Effects of Cd inhibitor on the efficient and safe cultivation of vegetables
To investigate the effects of Cd inhibitor on the efficient and safe cultivation of vegetables,a field experiments were carried out to evaluate the safety of luffa,green bean,leaf sweet potato and amaranth,and the corresponding cadmium reduction cultivation techniques,including soil pH regulation,reductive soil disinfestation(RSD)cadmium reduction test and the use of barrier agent were studied.The focus was on regulating soil pH,conducting RSD Cd-reducing tests,and researching application techniques.The results showed that luffa,sweet potato and green bean could be planted safely under the soil cadmium content≤1.0 mg/kg,and the cadmium content of their products was lower than the standard limit value.The application of a Cd inhibitor in the vegetable planting base increased the soil pH by 19.04%,while the RSD method increased the soil pH by 54.45%.The passivation effect of RSD was evidently superior to that of the cadmium inhibitor.Considering its long-term effects,application costs,dosage,yield-increasing effects,quality improvement,and other environmental risks,RSD treatment is recommended for promoting the passivation of heavy metals,and can also be combined with cultivation measures such as cadmium inhibitor and soil pH value aim to achieve safe planting.
Cd pollutionCd inhibitorreductive soil disinfestationvegetablessafe growing techniques
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NSTL
万方数据
