“十桃九烂”,主要是指桃蛀螟危害桃果所致。据1994年在绥宁县东山、鹅公两乡的调查:平均烂桃率为34.6％～50.2％,个别严重的达63.1％。桃蛀螟幼虫蛀食果蒂,沿果核食果心,虫入口处常有黄色透明胶状物,严重影响了产量和质量。此虫在湖南一般一年发生4～5代,世代重叠,寄主多,如桃园管理粗放,其危害更重。因此,应采取综合防治措施。 1.药剂防治 5月中下旬、7月中下旬喷90％敌 “Ten peach nine rotten”, mainly refers to peach borer harm peach fruit caused. According to a survey conducted in Dongshan, Goose and Two Townships in Suining County in 1994, the average rate of rotten peach was 34.6% to 50.2% and that of some severely individual was 63.1%. Peach borer larvae eat fruit pedicle, fruit core along the nuclear fruit, insect pest often yellow transparent jelly, seriously affecting the yield and quality. This pest occurs in Hunan generally 4 to 5 generations a year, generations overlap, host more, such as extensive management of Taoyuan, the more serious harm. Therefore, we should take comprehensive prevention and control measures. Pharmacy control in mid-late May, 90% of the enemy spray in mid-late July