通过27 -1丰抗素在棉花各生育期用不同剂量次数喷施后 ,结果表明 ,丰抗素对棉花枯萎病有一定的抑制作用 ,防治效果分别达36 .46 % -39.82 %。介于在没有抗病品种和杀菌剂的情况下 ,应用丰抗素可增加植株的抗逆能力 ,减轻枯萎病的发生 ,起到防病的效果 The results showed that the anti-Fusarium oxysporum f.sp.nubitans inhibited the cotton fusarium wilt by controlling the amount of 27-electin at various growth stages and the control effect was 36.46% -39.82%. In the absence of disease-resistant varieties and fungicides, the application of Feng-resistant plants can increase the resilience of plants to reduce the incidence of Fusarium wilt, play a preventive effect