摘要
本文通过无菌水培试验，研究了两种不同基因型小麦苗期根系分泌物对反硝化细菌优势种生长量和反硝化活性的影响。结果表明：两种不同基因型的小麦根系对反硝化细菌均有明显的根际效应，其菌数和反硝化活性又以郑引１号大于宝丰７２２８；根分泌物中氨基酸组分两者相似，但其总量也以郑引１号大于宝丰７２２８，对根际反硝化细菌产生直接影响。而反硝化活性不受菌株耐药标记的影响。
Studies of tbe root exudates of wheat
sboots on the growing amount and deni-trification activity of the dominant denitrifiers species
were conducted by the sterileaquicultural experiments. The results indicated that the
rhizosphere effects of thetwo different genotype wheats in the denitrifiers are significant. The
total amountof the bacteria are larger and the activity of denitrification are more intensive inthe
rhizosphere of Zhenyin No. 1 than those in the rhizosphere of Baofen No. 7228.The
components of amino acid of the root exudates of Zhenyin No.1 are similar tothose of Baofen
No. 7228, but the quantity of amino acid,the former is larger.The lable of resistance to
streptomycin on the denitrifiers has no effect on the ac-tivity of denitrification.
出处
《土壤学报》
CAS
CSCD
北大核心
1995年第4期408-413,共6页
Acta Pedologica Sinica
基金
国家自然科学基金
