通过藏红T染色法,确定线虫染色时间,并测定4种常规药剂对南方根结线虫的室内活性.结果显示,染色1 h后,线虫的染色率达到100%.1.8%阿维菌素EC和40%灭线磷EC对南方根结线虫具有良好的活性,LC50值分别为14.9263 mg/L和15.3068 mg/L;40%辛硫磷EC和200 g/L丁硫克百威EC活性较差.%Laboratory experiment was conducted with four selected nematicides forMeloidogyneincognita, the dying time and toxic activity were determined by Safranine-T staining method. The results showed that the staining rate of Safranine-T reached 100%. Abamectin 1.8% EC and ethoprophos 40% EC had higher biological activities onMeloidogyne incognita, with LC50 values of 14.9263 mg/L and 15.3068 mg/L. Phoxim 40% EC and carbosulfan 200 g/L EC had less activities on Meloidogyne incognita.
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