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雪松(Cedrus deodara),是常见的园林绿化优良树种。近年来,随着绿化水平的提高,3米以上大规格的雪松需求量增加,而小苗滞销。为促进雪松苗期生长,缩短培育大苗时间;我们于1986年使用具较高生理活性的植物激素——赤霉素,对雪松进行叶面喷施试验,并对处理的浓度、时间、次数和雪松苗期生长效应进行了探讨。现将初步结果报道如下: 材料与方法 (一)试验材料 1.立地条件:本试验设在武进县雪堰乡共建林果场,圃地土壤为轻壤到中壤,前茬为苹果树林场,肥力中等。 2.供试雪松为当年生实生苗。播种方式:大田播种,点播。行距为12厘米,每行雪松双列,出苗率为50—75％。株行距为6×6厘米。
Cedrus deodara, a common species of landscaping trees. In recent years, with the improvement of the level of greening, the demand for large size cedar of more than 3 meters has increased, while the seedlings have not sold well. In order to promote the seedling growth of cedar and shorten the time of cultivating big seedlings, we used the phytohormone GA3, a plant hormone with high physiological activity, to test the leaf cotyledon of cedar in 1986, and analyzed the concentration, time and frequency of treatment Cedar seedling growth effects were discussed. The preliminary results are reported as follows: Materials and methods (a) test materials 1 site conditions: This experiment is located in Wujin County, Xueyan Township, build a fruit farm, garden soil light soil to the soil, the former crop of apple trees Field, moderate fertility. 2. Cedar for the trial for the annual seedlings. Seeding methods: field seeding, on-demand. Row spacing of 12 cm, each row of cedar double row, the emergence rate of 50-75%. Plant line spacing of 6 × 6 cm.