紫花苜蓿也叫苜蓿,紫花苜蓿受到病虫害危害后,出现茎叶枯黄,叶片残缺,生长不良,产量下降,产品变劣,利用年限缩短等现象,造成很大经济损失对病虫害防治要采取“预防为主,综合防治”的方针,通过植物检疫,合理轮作,种子消毒,选用抗病虫品种,田间管理,适时刈割等技术措施及科学篱药方法进行治疗。 Medicago sativa, also known as alfalfa, alfalfa after pest damage, the emergence of stems and leaves yellow, leaf defects, poor growth, yield decline, product deterioration, the use of shortened life and other phenomena, resulting in great economic losses on pest control should be taken to prevent Based on the principle of “comprehensive prevention and control”, we adopted the technical measures of plant quarantine, rational rotation, seed disinfection, selection of pest-resistant varieties, field management, timely cutting, and scientific methods of treatment.