摘要
[目的]研究大蒜不同时期根际微生物数量及土壤酶活性的变化。[方法]以白皮蒜和紫皮蒜为试验材料,分别测定不同时期根际微生物数量及土壤脲酶、酸性磷酸酶和过氧化氢酶活性。[结果]各时期2个大蒜品种均促进了根际土壤中细菌、放线菌和真菌的生长,间接提高了根际土壤中脲酶、磷酸酶和过氧化氢酶的活性,从而促进了大蒜根际土壤中氮、磷等营养元素的周转与循环,为下茬作物生长提供了良好的微生态环境。[结论]该研究为大蒜作为一种良好的前茬作物的生态学研究提供理论依据。
[Objective] The aim was to investigate the changes in rhizosphere microbial population and soil enzyme activities of the two cultivars of Allium sativum L.at different stages.[Method] By using white garlic and purple garlic as the experimental materials,the microbial population,and the urease,acid phosphatase,catalase activities in rhizosphere soil at different growth stages were measured.[Result] The root exudates of the two garlic cultivars could promote the growth of bacteria,fungi and actinomycetes,and thus indirectly increase the urease,acid phosphatase and catalase activities in rhizosphere soil,thereby improving the turnover and circulation of the soil nutrition elements such as nitrogen and phosphorus and providing a better micro-ecological environment for the later crop.[Conclusion] The study had provided theoretical basis for the ecological research on garlic used as a preceding crop.
出处
《安徽农业科学》
CAS
北大核心
2011年第5期2740-2741,2744,共3页
Journal of Anhui Agricultural Sciences
基金
吉林农业大学博士启动基金(2007021)
关键词
大蒜
土壤微生物
土壤酶
Allium sativum L.
Soil microbial population
Soil enzyme
