IntroductionGreen manure plays a po

Introduction
Green manure plays a positive role in reducing soil erosion,
improving soil physical properties [ 19], lifting organic matter
and fertility levels, extending the nutrient persistence [4], and
restraining global warming potentials [ 25], and it also contrib-utes to higher crop yields [ 6, 32]. It is one of the sustainable
agricultural measures to maintain and improve soil quality
[32]. Soil microbes and their life processes serve as a vital
factor influencing the long-term development of agricultural
ecosystem [ 1]. Therefore, an in-depth and systematic research
on the effects of green manure on soil microbes is of great
importance. Tejada et al. [32] applied green manure over four
consecutive years and found that various green manure had
significant impact on the yields of corn, soil microbial bio-mass, dehydrogenase, urease, glucosaccharase, phosphatase,
and arylsulfatase . Stark et al. [29] s tudied the e ffects o f the
green manure l up in on soil micr obes a nd en zyme activity.
Ya ng et al. [ 35] d iscove red the impact of different k inds of
green manure on soil microbial biomass and enzyme ac-tivity. Although these e xisting r eports could prove the
significant e ffect of gr een manu re on soil micr obes, the
research methods o n it o nl y m ad e indirec t a ssessmen t b y
means o f m icrobi al biomass, enzyme activity character is-ti cs, e tc. [29, 32].