摘要
试验研究不同培肥方式对西藏自治区中部退化土壤微生物的影响结果表明 ,施用有机肥 ,特别是化肥与有机肥配施对土壤微生物和动物 (蚯蚓 )有重要影响 ;土壤pH值为 5 .91～ 6 .0 2内土壤细菌与有机质含量呈显著正相关 ,并在土壤微生物数量构成中占绝对优势 ,对作物N、P营养有较大贡献 ,土壤真菌亦呈此趋势 ;土壤放线菌则与土壤有机质、速效氮、速效磷含量呈负相关。
The field trials were conducted to study the effects of different methods of applying fertilizers on the living beings in soil in central Tibet. The results show that the organic fertilizer, especially organ-mineral fertilizer has a crucial effect on the living beings in soil. The soil bacterium increases significantly by the increase of the organic matter content under the acid soil conditions(pH5.91～6.02).At the same time soil bacterium has numerical overwhelming superiority among microorganisms and it has an exceptional significance in N and P nutritions. The soil organic matter, available N and P, increase with the increase of the soil fungi, too. But the soil actinomyces descend with the increase of the soil organic matter, available N and available P.
出处
《中国生态农业学报》
CAS
CSCD
2004年第1期108-110,共3页
Chinese Journal of Eco-Agriculture
基金
国家自然科学基金项目 (4 0 0 610 0 4)资助
