Effects of Bamboo Charcoal Organic Fertilizer on Growth and Cadmium Accumulation in Paddy and Upland Crops
In order to screen suitable organic fertilizer for paddy and upland crops in cadmium-polluted farmland,the typical cadmium-polluted farmland soil in Hunan Province was selected,and the effects of bamboo charcoal organic fertilizer on the growth and cadmium accumulation in rice and Chinese cabbage were studied by laboratory culture experiments.The results show that an appropriate application of bamboo charcoal organic fertilizer significantly increases the biomass of rice and Chinese cabbage.Specifically,the application of 0.66 g/kg of bamboo charcoal organic fertilizer leads to a 97%increase in rice biomass compared with the control(CK).Moreover,cadmium content in the roots,stems,and leaves of rice drops by 38.8%and 18.8%,respectively.The height of Chinese cabbage increases compared with the CK,and cadmium content in Chinese cabbage decreases by 34%.As the application rate of bamboo charcoal organic fertilizer increases by 0.5 g/kg,soil pH increases by 0.1 unit.Furthermore,effective cadmium content in soil decreases with the increasing application of organic fertilizer,with a 9.2%reduction observed under the treatment of 1.33 g/kg bamboo charcoal organic fertilizer.The combination treatment of bamboo charcoal organic fertilizer and calcium oxide can effectively reduce cadmium accumulation in rice.However,the application method in dry farmland requires further improvement.The research shows that the application of bamboo charcoal organic fertilizer can increase crop yield and reduce the migration efficiency of cadmium in soil-paddy and upland crop systems,thus reducing the cadmium accumulation in crops.
NETL
NSTL
万方数据
维普
