Abstract:
Objective The problems of legumes in continuous cropping are needed to be explored.
Method The effects of exogenous inoculation of single and compound Rhizobia on soil nutrients and enzyme activities of continuous pea were investigated using ‘Longwan 6’ and ‘Dingwan 8’ as objects.
Result ① Continuous cropping decreased the soil nutrient contents and enzyme activities of ‘Longwan 6’ and ‘Dingwan 8’. Exogenous rhizobium inoculation could boost soil nitrate nitrogen, ammonium nitrogen, available phosphorus, and available potassium levels, as well as soil activities of sucrase, urease alkaline phosphatase. ② The inoculation effect of single strain and compound strain was different due to different growth stages and different indices. ③ The average membership function value of ‘Longwan 6’ inoculated with a single strain ‘Accc15657’ was the largest (0.593), and the mitigating impact on the soil was the best. Ding wan 8 inoculated with compound strain ‘Accc15657 + Accc15735 + Da99’ had the highest average membership function value (0.533), and had the strongest mitigation effect on soil.
Conclusion Inoculating suitable rhizobia can boost soil nutrients and enzyme activities during continuous cropping, as well as reduce the pea continuous cropping issue.
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