16S and ITS bioinformatics of soil samples
Sampling was conducted in Yuncheng City, Shanxi Province, China. The top soil layer (0-20 cm) was collected at the physiological maturity of winter wheat-summer maize by five-point sampling method. And designed five treatment methods: (1) CK, nofertilizer treatment; (2) NPK, adequate nitrogen fertilizer, phosphorus fertilizer,and potassium fertilizer treatment; (3) PK, nitrogen deficiency treatment; (4) NK,phosphorus deficiency treatment; and (5) NP, potassium deficiency treatment.