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以3年生新红星苹果树为试材,于盛花后75和106天喷布500、1000和2000ppmB_9。至盛花后154天采收试验树上一半果实,另一半果实于盛花后161天时采收。将果实贮藏在冷库或气调库保存262天。研究结果表明,喷布B_9减少了果实心皮内的乙烯浓度,并延迟了乙烯转跃期,改善了果实着色及采前落果。应用B_9后延迟了翌春开花期,但对座果率无影响。B_9在果实内的残苗量依使用浓度而定,一般均可
With 3-year-old New Star apple tree as test material, 500, 1000 and 2000ppm B_9 were sprayed on the 75th and 106th days after flowering. 154 days after harvest to harvest half of the fruits of the experimental tree, the other half of the fruits in full bloom 161 days after the harvest. The fruit stored in cold storage or gas storage for 262 days. The results showed that B_9 spraying reduced the ethylene concentration in fruit carpels, delayed the ethylene cycle, improved fruit coloring and fruit drop before harvesting. The application of B_9 postponed flowering next spring, but no effect on the rate of fruit set. B_9 residues in the fruit according to the use of concentration may be, generally can be