Method for preventing and controlling daktulosphaira vitifolia fitch by utilizing plant source preparation

The invention relates to a method for preventing and controlling daktulosphaira vitifolia fitch by utilizing a plant source preparation. The method comprises the following steps of using tobacco, blumea balsamifera, radix astragali, radix tripterygii wilfordii, radix sophorae flavescentis, fructus toosendan and herba andrographitis as plant raw materials, and preparing the plant raw materials into plant extract liquor after extracting; independently or compositely using the plant extract liquor according to the soil texture and the damage degree of the daktulosphaira vitifolia fitch, irrigating diluted plant extract liquor to soil at the root of a grape plant after the plant extract liquor is diluted by water according to a volume ratio of 20 to 50 times, and irrigating for 4 to 6 times every year, wherein the plant extract liquor can also be applied with irrigation water. According to the method for preventing and controlling the daktulosphaira vitifolia fitch by utilizing the plant source preparation, discl