攀枝花市植烟土壤养分状况评价

Analysis on Soil Nutrients of Panzhihua Tobacco-growing Areas

为了查明攀枝花烟区土壤养分特征,对该烟区750份耕层土壤样品进行了分析。结果表明,攀枝花市绝大部分植烟土壤酸碱度适合烤烟种植,有机质总体较缺乏,土壤供氮水平较高,大部分植烟土壤碳氮比偏低,土壤碱解氮、速效磷、速效钾含量总体适中,但变异系数大,有44.26%的土壤碱解氮含量偏低,32.13%的土壤速效磷缺乏,56.27%土壤速效钾缺乏。仁和区植烟土壤以及低海拔烟区土壤相对较贫瘠。

750 topsoil samples in Panzhihua tobacco-growing areas were analyzed to find out the soil nutrients characteristics in this areas.The results showed that almost all the soil pH was fit for flue-cured tobacco growing in Panzhihua City.The organic matter in soil was deficient as a whole.The nitrogen supplying capacity of soil was high,but the C/N ratios of most soils were low.The content of available N,available P and K was moderate as a whole,but the coefficients of variation were very big.About 44.26% of the soils were deficient in available N,32.13% of the soils were deficient in available P,and 56.27% were deficient in available K.The content of soil nutrients in Renhe and low altitude area was relatively low.