Relationship between rhizosphere microbial community functional diversity and faba bean fusarium wilt occurrence in wheat and faba bean intercropping system Effects of inter-row planting grasses on soil organic carbon fractions and soil microbial community of apple orchard in Weibei dryland Carbon catabolic diversity characters of 9 chestnut soils in Beijing Field control efficiency of tobacco specific bio-organic fertilizer on tobacco bacterial wilt Effects of different wheat cultivars intercropped with faba bean on faba bean Fusarium wilt,  root exudates and rhizosphere microbial community functional diversity