近年来湖北宜昌地区柑桔产区大实蝇蔓延为害,以致1971年产量损失达50万斤以上。1972年进一步落实了毛主席“以粮为纲,全面发展”的方针,在各级党委和宜昌地区林业特产局的领导下,层层成立联防指挥小组,大搞群众运动。联防第一战役取得很大成绩。全区从5月上中旬开始至5月下旬在树冠下撤0.5—1.0％六六六粉3.8万余斤,平均每株用 In recent years, Yichang, Hubei citrus producing areas of fruit fly spread damage, resulting in 1971 yield loss of 500,000 pounds or more. In 1972, Chairman Mao further implemented the principle of “taking grain as the key link and all-round development.” Under the leadership of the party committees at all levels and the forestry and product specialties bureau of Yichang Prefecture, the United Command and Command Group was established at various levels to promote the mass movement. The first battle in the defense made great achievements. The region from mid-May to mid-May until late May under the canopy 0.5-1.0% six six six powder 38,000 kg, with an average of each plant