前些年,我场栽培的元帅系苹果采前落果现象较重,影响产量和品质,仅此一项全场每年可损失数千元。1982年采果之前,我们对红星、红元帅等品种喷布30ppm萘乙酸溶液,收到显著效果。全场共喷结果大树3,700株;初结果树8,000株。喷药时期第一次是8月15日,第二次为9月5日。据调查,喷两遍的每株树下平均 A few years ago, my field mandarin system apples before the harvest of fruit heavier, affecting yield and quality, only one audience lost thousands of dollars each year. Before picking fruit in 1982, we sprayed 30ppm naphthalene acetic acid solution on Red Star, Red Marshal and other varieties and received remarkable results. A total of 3,700 trees were sprayed at the scene and 8,000 trees at the beginning. Spraying period for the first time on August 15, the second for the September 5. According to the survey, the average of each tree sprayed twice