大洋芽孢杆菌HMF13(耐盐促生主力)
· 降盐碱:分泌有机酸中和碱度,吸附/外排Na',降低土壤含盐量与pH。
· 强根抗寒:产IAA、铁载体等,促根系发育;诱导脯氨酸等渗透调节物质积累,提升细胞抗冻性,减少低温伤害。
· 养分活化:解磷、固氮,提高土壤氮磷有效性,保障早碱麦养分供给。
胶冻样类芽孢杆菌(改土促长核心)
· 改土提肥:分泌胞外多糖改善团粒结构,降容重提孔隙度;溶磷释钾并释放中微量元素,提升保水保肥能力。
· 抗寒增产:产赤霉素、吲嗓乙酸等,增叶绿素16-18%,增强光合作用;促壮苗,提升抗寒/抗早/抗病能力,平均增产约10%。
· 抑菌护根:形成根际优势菌群,抑制土传病害,减少死苗。
协同增效:前者主攻耐盐降碱+抗寒生理调节,后者主攻土嚷结构改良+养分活化+系统促生,叠加后改土与抗逆效果显著优于单菌。
Bacillus oceanisediminis HMF13 (Key Strain for Salt Tolerance and Growth Promotion)
- Saline-alkali amelioration: It secretes organic acids to neutralize alkalinity, adsorb and expel sodium ions, thus reducing soil salt content and pH value.
- Root strengthening and cold resistance: It produces IAA, siderophores and other substances to promote root development; induces accumulation of osmotic regulators including proline, enhances cellular frost resistance and alleviates low-temperature damage.
- Nutrient activation: It performs phosphorus solubilization and nitrogen fixation to improve the availability of soil nitrogen and phosphorus, and guarantee nutrient supply for crops in saline-alkali land.
Paenibacillus mucilaginosus (Core Strain for Soil Improvement and Growth Promotion)
- Soil improvement and fertility enhancement: It secretes extracellular polysaccharides to optimize soil aggregate structure, reduce bulk density and increase soil porosity; it dissolves phosphorus, releases potassium and medium and trace elements, and improves soil water and fertilizer retention capacity.
- Cold resistance and yield increase: It synthesizes gibberellin and indoleacetic acid, increasing chlorophyll content by 16%-18% to strengthen photosynthesis. It cultivates strong seedlings, improves cold resistance, drought resistance and disease resistance, with an average yield increase of about 10%.
- Bacteriostasis and root protection: It forms dominant rhizosphere flora to inhibit soil-borne diseases and reduce seedling death.
Synergistic Effect
The former is mainly responsible for salt tolerance, alkali reduction and cold-resistant physiological regulation, while the latter focuses on soil structure improvement, nutrient activation and systematic growth promotion. The combined use achieves remarkably better effects in soil improvement and stress resistance than single strain application.