Effects of different cultivation patterns on cadmium accumulation in plants and tuber yield and quality
Effects of different cultivation patterns on cadmium accumulation in plant,tuber yield and quality were studied in this paper.Potato cultivar 'Favorita' was planted in five cultivation patterns including none Nitrogen pattenm.traditional pattern,high yield pattern and super high yield pattern in potato-rice rotation systems and high yield pattern in potato-maize rotation systems.The cadmium concentrations of leaves and stems were between 4.23 to 5.52 and 4.85-5.02 mg/kg respectively,exhibiting significantly higher than those of tubers (0.34-0.39 mg/kg).Bioconcentration factors(BCF) of Cd in stems and leaves were between 10.15 to 13.25,exhibiting significantly higher than those of tubers (0.82-0.92).The total yield and marketable tuber rate of RP-N0 pattern showed the lowest values,with 11.12 ton per hectare and 71 percent respectively,exhibiting significantly lower than those of other patterns.The total yield of MP-H pattern was the highest,with 42.07 ton per hectare.The dry matter and starch content of RP-N0 pattern showed the highest values,with 19.02 and 11.55 percent respectively.The total tuber yields and pH of cultivated soils differed in different cultivation patterns.The cadmium concentrations of tubers of different cultivation patterns showed a negative correlation with pH of the cultivated soils (r=-0.65).BCF of Cd in tuber exhibited significant positive correlations with pH of the cultivated soils(r=-0.88).
国家科技期刊平台
NSTL
万方数据
维普
