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盆栽大豆连作条件下 ,用不同生育期根际回收液和根系提取液处理大豆种子 ,根据其萌发、出苗情况比较分析 ,证明大豆生育中期和后期的根际回收液以及根系提取液对大豆生长发育有抑制效应。抑制原因主要是生理活性的内源抑制物。根系提取物鉴定结果表明 ,ABA是生育后期根系内的主要内源抑制物质之一
Under the continuous cropping condition of potted soybean, the soybean seeds were treated with the rhizosphere liquid and the root extract in different growth stages. According to their germination and emergence, the results showed that the rhizosphere liquid and the root extract of mid and late soybean Inhibit effect. Inhibition is mainly due to physiological activity of endogenous inhibitors. The results of identification of root extracts showed that ABA is one of the major endogenous inhibitory substances in root system during later growth period