不同时期土壤施用多效唑对抑制苹果生长的影响

Influence of Timing of the Paclobutrazol Soil Application on Growth of Apple Trees

连续两年对4个苹果品种进行了不同时期土壤施用多效唑的试验。结果表明,苹果土施情况下,其“滞后期”只需2—2.5个月。为了让明显的抑制效果从旺盛生长一开始就发生,就需要把施用的时间向前推移。合适的施用时间应在9月上半个月(大体相当于金冠采收期)及8月。

Studies on the influence of timing of the paclobutrazol soil application on the growth response of apple trees were conducted on four apple cultivars in two years. The lag time in apple varied from 2 to 2. 5 months. In order to eliminate the influence of lag time, application on August and the first half of September in previous year was recommanded.