土壤益生菌对盆栽马尾松苗生长的影响

Effect of Soil Probiotics on the Growth of Potted Masson's Pine Seedlings

将固氮菌、解磷菌、解钾菌按不同组合接种到盆栽的马尾松幼苗根部，结果表明：2号固氮菌＋解磷菌组合处理的苗木高生长比对照增长11．6％；2号固氮菌处理的苗木地径生长比对照增长23．3％；两种固氮菌＋解磷菌＋解钾菌组合处理的苗木生物量分别比对照增长45．5％和48．8％。而土壤中的N、P、K元素的含量也发生了明显的变化，1号固氮菌则使土壤含氮量增加54．2％，其它处理均使土壤含氮量减少。可溶性磷增加20．0％-50．0％，可溶性钾增加144．4％-277．8％。

The nitrogen-fixing bacteria , the phosphate-solubilizing bacteria, and the potassium-solubilizing bacteria under different combinations were inoculated at Masson pine seedling roots. The results showed that the height growth of seedlings treated with the 2nd combination of the nitrogen-fixing bacteria and the phosphate-solubilizing bacteria increased by 11.6% as compared with the control ;The ground diameter growth of seedlings treated with the 2nd nitrogen-fixing bacteria inceased by 23.3% ; The biomass of seedlings treated with two combinations the nitrogen-fixing bacteria, the phosphate-solubilizing bacteria, and the potassium-solubilizing bacteria increased by 45.5% and 48.8% respectively as compared with the control. And the content the N, P and K elements in the soil also underwent significant changes. The 1st nitrogen-fixing bacteria made the nitrogen content in the soil increase by 54.2%, and the other treatments all made the nitrogen content in the soil decrease. Besides, the dissolvable phosphorus increased by 20.0% to 50.0% , and the dissolvable potassium increased by 144.4% to 277.8%.