In the text, we identify the phytotoxic substances in root exudates of cucumber by GC-MS, the root exudates was collected with Amberlite XAD-4 resin.
本文采用GC-MS分析法，鉴定了XAD-4吸附树脂连续收集黄瓜水培液所获得的黄瓜根系分泌物的种类。
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Because composting is a biochemical process and the compost maturity is related to phytotoxic substances in the immature compost, it can also be assessed by biological methods.