以黄瓜、小麦、油菜和高粱为供试对象，用种子萌发法测定绣球小冠花地上部分石油醚、乙酸乙酯、乙醇3种溶剂提取物的除草活性。结果绣球小冠花的乙酸乙酯、乙醇溶剂提取物对4种供试作物均显示出很强的抑制生长作用，质量浓度达100 mg/mL时对黄瓜、小麦、油菜和高粱幼苗、幼茎的抑制率均为100%。低质量浓度乙酸乙酯提取物对小麦幼根及幼茎的生长有较强抑制作用；0.5 mg/mL的乙酸乙酯提取物对黄瓜、小麦、油菜、高粱幼茎和幼根生长的抑制率分别为:11.57%、73.35%、3.06%、47.20%和65.06%、61.8 5%、29.96%、2.98%；1.0 mg/mL的乙醇提取物对黄瓜、小麦、油菜、高粱幼茎和幼根生长的抑制率分别为52.07%、22.58%、12.23%、0.93%和84.57%、24.47%、56.25%、0。表明绣球小冠花乙酸乙酯和乙醇提取物具有优秀的除草活性。

The herbicidal activities of petroleum ether, ethyl acetate and ethanol extracts from aerial parts of Coronilla varia L. were investigated， using seed germination method in Cucumis sativus L.， Triticum aestivum L.， Brassica campestris L. and Sorghum vulgare Pers. The results show that ethyl acetate and alcohol extracts could inhibit the growth of crop seedlings， the inhibition rate to all the seedlings were 100% when mass concentration was 10 mg/mL. The ethyl acetate extract had high inhibition to the stem and root growth of T. aestivum L. The inhibition rates of ethyl acetate extract to the stem and root growth of C. sativus， T. aestivum， B. campestris. and S. vulgare seedlings were 11.57%， 73.35%， 3.06%， 47.20% and 65.06%， 61.85%，29.96%， 2.98%， respectively at the concentration of 0.5 mg/mL； but of alcohol extracts at the concentration of 1 mg/mL the rates were 52.07%， 22.58%， 12.23%， 0.93% and 84.57%， 24.47%， 56.25%， 0， respectively. It was concluded that the ethyl acetate and alcohol extracts from C. varia had the potential herbicidal activity.

S432.2

现代农业产业技术体系专项资金(CARS-14-1-22)，国家自然科学基金地区基金项目(31760525)。