However, there's a lot of acid soil in South of China, and acid-tolerant rhizobia are in short.
然而，我国南方酸性土壤分布广、面积大，耐酸苜蓿根瘤菌资源缺乏。
2
The foreign experience of planting alfalfa on moderately acid soil showed that inoculating acid-tolerant rhizobium could improve the yield and quality of alfalfa.