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国光苹果在栽培的苹果品种中占有较大比重,其品种座果率也高。但盛果期因花量过大,座果过多,树体负载过头而造成小果增加,大小年严重,果实商品价值降低,树体衰弱,腐烂病增多。克服苹果大小年的途径除了加强土、肥、水管理,合理修剪,调节生长与结果的矛盾以外,最直接有效的措施是疏花疏果。目前人工疏花疏果,费工、费时,很难及时完成此项作业。因此,在生产上推广化学疏花疏果技术,势在必行。 山地果园干旱,缺水,土壤瘠薄。为了探求山地果园国光苹果化学疏花疏果的新方法,1985年—1986年进行了此项试验,现总结如下:
Guoguang Apple cultivars occupy a larger proportion of varieties, the variety of fruit rate is also high. However, the full fruit period due to excessive flowering, excessive fruit, tree overload caused by small fruit increases, the size of the year serious, the value of fruit products to reduce the tree body weak, decay disease increased. Way to overcome the size of the apple in addition to strengthening the soil, fertilizer, water management, reasonable pruning, adjusting the conflict between growth and results, the most direct and effective measure is thinning thinning. At present, the flowering thinning fruit, labor, time-consuming, it is difficult to complete this operation in time. Therefore, it is imperative to promote the chemical thinning and thinning technology in production. Mountain orchard drought, water shortages, soil infertility. In order to explore the mountain orchard Guoguang apple thinning of the new method of thinning, 1985 - 1986 conducted this experiment, are summarized as follows: