我校这學期在勤工儉學活动中利用菊花的莖和叶拌合50％的尿水(即人尿50斤加水50斤)防治菜蚜获得成功。共配制方法是这样的,把菊花的茎和叶切碎放在木桶內,每5斤的菊花莖和叶加5斤即50％的尿水,浸一晝夜,擰干过濾,濾液就是一种很好的土农药。把它噴射在有蚜虫的蔬菜植株上經过一天 Our school this semester in the work-study activities, the use of chrysanthemum stems and leaves mixed with 50% of the urine (ie, urine 50 kg plus 50 kg of water) to control aphid success. The total preparation method is such that the chrysanthemum stems and leaves shredded in the barrel, each 5 pounds of chrysanthemum stems and leaves plus 5 pounds or 50% of the urine, soak a day and night, wring dry filtration, the filtrate is a Very good soil pesticide. Spray it on aphid-bearing vegetable plants for a day