摘要
考察了Na+对Rs-2和Rs-4两株土壤微生物溶硅溶磷的影响。结果表明:Na+可促进Rs-2、Rs-4菌株溶硅能力的增加。在1.5%NaCl条件下,Rs-4菌的最大溶硅量为106.92μg/mL;在3%NaCl条件下,Rs-2菌株的最大溶硅量为148.9μg/mL。而且Na+能够促进Rs-4菌株溶磷能力的增加,在3%NaCl条件下,Rs-4菌株的最大溶磷量为115.68μg/mL,但Na+降低了Rs-2菌株的溶磷能力。Rs-2菌株溶硅量随时间的变化符合Logis-tic曲线类型,回归分析表明溶硅量与时间呈正相关且回归关系显著。Rs-4菌株溶磷量随时间的变化符合二项式类型,回归关系极显著且模型有很高的可信度。
Research was conducted to observe the impact of Na ＋ ion on silicon（Si） and phosphorus（P） dissolved by Rs - 2 and Rs - 4 strains. The results indicated that NaC1 condition could improve Si dissolved by Rs - 2 strains and Rs -4 strains. When Rs- 4 strains were cultivated 72 hours, concentration of dissolution Si reached 106.92 μg/mL under 1.5% NaCI, and 148.9 μg/mL by Rs- 2 strains under 3% NaCl. Then, NaCl condition could facilitate dissolution P capacity of Rs -4 strains, after 72 h, concentration of dissolution P reached 115.68 μg/mL under 3% NaCl. Furthermore, based on the changing with time, dissolution Si character of Rs - 2 strains accorded with Logistic curve type, and regression analysis showed that dissolved silicon and time was in positive correlation andhad significant relationship. Followed dissolution P character of Rs - 4 strains accorded with binomial type, and had very significant relationship and high reliability.
出处
《干旱地区农业研究》
CSCD
北大核心
2012年第6期162-167,185,共7页
Agricultural Research in the Arid Areas
基金
甘肃省高校省级重点实验室项目(XZ1015)
关键词
菌株
Na+
溶硅
溶磷
bacterial strain
Na＋
dissolved silicon
dissolved phosphorus
