不同有机物配施化肥对植烟土壤腐殖质碳的影响

探讨了不同有机物配施化肥对植烟土壤腐殖质碳的影响,旨在为衡量和评价不同有机物对植烟土壤质量和肥力的影响提供科学依据。结果表明,与单施化肥(T_1)处理相比,总体上腐熟麦秸秆(T_2)、生物炭(T_3)、芝麻饼肥(T_4)、牛粪(T_5)配施化肥处理土壤腐殖质总碳、富里酸碳、胡敏素碳的含量均有不同程度升高,增幅分别为13.71%、9.31%、12.57%、28.10%,24.35%、6.30%、13.73%、14.80%,10.93%、16.11%、3.96%、26.27%,另外,T_2、T_4、T_5处理土壤胡敏酸碳含量增加,增幅分别为10.56%、66.14%、103.93%;T_4、T_5处理土壤胡/富分别提高32.20%、63.93%,PQ(胡敏酸在腐殖酸中所占的比例)分别提高22.96%、48.95%。综上,有机物配施化肥能改善土壤腐殖质碳组分,牛粪配施化肥处理效果最好,生物炭表现最差。

Effects of Different Organic Matters with Chemical Fertilizer on Humus Carbon in Tobacco-planting Soil

The effect of different organic matters with chemical fertilizer on humus carbon in tobacco-planting soil was analyzed,so as to provide scientific theoretical basis for measuring and evaluating the effects of different organic matters on the quality and fertility of tobacco planting soil. The results showed that compared with the treatment with sole chemical fertilizer ( T1 ) ,the treatments with decomposed wheat straw and chemical fertilizer ( T2 ) ,biological carbon and chemical fertilizer ( T3 ) and rapeseed cake fer-tilizer and chemical fertilizer ( T4 ) ,cattle manure and chemical fertilizer ( T5 ) could significantly increase the contents of humus carbon,fulvic acid carbon,humin carbon by 13. 71%,9. 31%,12. 57%,28. 10%and 24. 35%,6. 30%,13. 73%,14. 80% and 10. 93%,16. 11%,3. 96%,26. 27% respectively. In ad-dition, T2 , T4 , T5 treatments could significantly increased humic acid carbon content by 10. 56%, 66. 14%,103. 93% respectively. T4,T5 treatments could significantly increased the ratio of humic acid carbon to fulvic acid carbon by 32. 20% and 63. 93%,the PQ by 22. 96% and 48. 95% respectively. In summary,organic fertilizer combined with chemical fertilizer could improve the component of soil humus carbon,especially cow dung fertilizer which had obvious effect,biological carbon was the worst.