Efficient and accurate prevention and control method for lemon bud maggots

The invention belongs to the technical field of plant protection, and provides an efficient and accurate prevention and control method for lemon bud maggots. The method comprises the following steps: (1) from the first ten-day period of March to the middle ten-day period of April every year, marking lemon trees in a lemon orchard by adopting a five-point sampling method, sequentially marking branches at four sites on canopies in each direction from top to bottom in the five directions of east, south, west, north and middle of each tree, totally 20 branches for each tree, and counting once every two days; (2) when flowers bloom, flowers are about to bloom and the ratio of the number of flower buds with the diameter of 4 mm or above to the total number of flowers reaches 20%, the orchard ground is subjected to shallow ploughing, weeding and thorough watering once; 3, when the ratio reaches 25%, chlorpyrifos is mixed with water to be sprayed to the ground; and (4) when the ratio reaches 30%, pyriproxyfen (microe