Relationships between adsorption mechanism of allelochemicals and change of soil microorganism flora by application of activated carbon for avoidance technology of replant problem

本研究的目的是评估土壤化感活性在不同土壤条件下芦笋种植，而侧重于伤害的表达与同一品种重茬。此外，本研究还阐明了活性炭的吸附持续时间，它可以很容易地吸收土壤中存在的化感物质，同时与土壤微生物区系的变化。结果表明，施用活性炭对土壤化感作用的影响和程度因土壤性质而异。当施用成为土壤微生物数量增加的附带条件时，活性炭吸附持续时间的效应将通过吸附在活性炭上的化感物质与土壤微生物活性的解吸作用得以维持。

The purpose of the study was to evaluate the soil-allelopathic activity in different soils under asparagus cultivation, while focusing on expression of injury by continuous cropping with the same cultivar. Moreover, this study was elucidated adsorption duration of activated carbon, which can easily absorb allelochemicals present in the soil, while associated with changes in the soil microflora. As a result, the effect of and degree of soil-allelopathic activity by application of activated carbon differs depending on the soil properties. When the application became collateral for the increase in soil microorganisms phase, the effect of adsorption duration of activated carbon would be sustained by desorption action of allelochemicals adsorbed to the activated carbon with the activity of soil microorganisms.