丰都县土地整理对植烟土壤养分状况的影响

该文以野桃坝土地整理项目为例，采用野外采样和室内分析相结合的方法，研究了土地整理对植烟土壤养分状况的影响。结果表明，土地整理前后土壤主要养分含量发生显著变化，有效磷从18.17 mg/kg升高到29.87 mg/kg，有机质含量从27.5 g/kg降低为14.9 g/kg，速效钾从212.14 mg/kg降低为141.63 mg/kg，碱解氮含量变化不显著。在空间分布方面，土地整理使有效磷、速效钾和有机质土壤空间分布更均匀，区域差异减小。该研究明确了土地整理后烟田土壤养分状况，对烤烟生产和施肥具有指导意义。

Effect of Land Consolidation on Tobacco-Growing Soil Nutrient in Fengdu County

Taking Yetaoba land consolidation project as an example,the effect of land consolidation on tobacco-growing soil nutrient were studied by using field survey with in-door analysis. The results indicated soil nutrient con?tent and spacial distribution changed significantly before and after land consolidation. The available phosphorus con?tent increased from 18.17mg/kg to 29.87mg/kg,the organic matter content decreased from 27.5g/kg to 14.9g/kg,the available potassium content decreased from 212.14mg/kg to 141.63mg/kg,and the alkali hydrolyzable nitrogen content changed non-significantly. In the aspect of spatial distribution,land consolidation made the available phosphorus, available potassium and organic matter of soil spatial distribution more uniform and the regional difference de?creased. This study identified soil nutrient after land consolidation,which had a significance on flue-cured tobacco production and fertilization.