Soil Microbial Biomass and Its Relationship With Yields of Irrigated Wheat Under Long-term Conservation Management

摘要: Relating soil microbial properties to crop productivity is important appreciate the value of activities in sustainable agriculture. Over a 10-year period, we evaluated effects conservation (CONS) management practices on biomass carbon (MBC). The CONS included addition composted cattle manure; reduced tillage; diverse rotations that comprised wheat (Triticum aestivum L.), potato (Solanum tuberosum dry bean (Phaseolus vulgaris and sugar beet (Beta L.); use cover crops. was applied 3- 5-year irrigated compared with conventional (CONV) systems did not have any practices. Continuous also included. We then related MBC yields. Averaged over overall increased rhizosphere bulk by 18% 34%, respectively. When same length were compared, 3-year 30%; corresponding increases 4-year 13% 36%. Regressions between yields quadratic, associated increasing up 720 mg C kg soil. for 645 These compost inputs soil, which impacted organic contents. Therefore, resulted cycle high