Effects of Straw Returning and Microbial Agents on Garlic Yield and Fertilizer Utilization Efficiency
This study investigates the effects of straw returning and microbial agents on garlic yield and fer-tilizer utilization efficiency,using Daming purple garlic as the experimental material.Seven different treatments were established to analyze the effects.The results demonstrated that under conventional fertilization conditions,straw returning significantly increased the single scape weight,garlic scape yield,single bulb weight,garlic bulb yield,and partial fertilizer productivity.When straw returning was combined with a microbial agent,significant improvements were observed in garlic plant traits,scape traits and yield,bulb traits and yield,as well as in par-tial fertilizer productivity and agronomic efficiency.However,under conditions of a 25％reduction in fertilizer application,garlic plant traits,scape traits and yield,bulb traits and yield,and agronomic fertilizer efficiency were significantly lower with straw incorporation than with conventional fertilization without straw returning.The nutrients released from the straw were insufficient to offset the 25％reduction in fertilizer.Although under the 25％reduced fertilization condition,the combination of straw returning and microbial agents resulted in signifi-cantly higher partial fertilizer productivity and phosphorus fertilizer agronomic efficiency compared to conventional fertilization without straw returning,garlic plant traits,scape traits and yield,and bulb traits and yield were low-er,though not significantly.These findings suggest that in garlic cultivation in southern Hebei Province,empha-sis should be placed on the application of straw returning and microbial agents.The amount of fertilizer replaced by the combination of straw returning and microbial agents should be less than 25％.
万方数据
维普
