杂种马褂木扦插繁殖技术研究——Ⅱ插穗粗细及环境条件与生根的关系

A Study on the Cutting Propagation of Liriodendron chinense X L.tulipfera——Ⅱ.The Relationship Between the Rooting Percentage and the Diameter of Cuttings and Other Environmental Factiors

通过一系列试验,研究了插穗粗细及扦插基质、扦插时间等环境因子与杂种马褂木扦插生根的关系。结果表明:嫩枝扦插时适宜的插穗直径范围是4 mm^8 mm,最好为6 mm^8 mm;硬枝扦插时适宜直径范围是6mm^10 mm,最好为8 mm^10 mm;在参试的4种基质中,嫩枝扦插以珍珠岩最好,硬枝扦插以砻糖灰最佳;夏季扦插在5月中旬至8月下旬这段时间内均可进行,但以6月上旬前后扦插生根率最高。

The diameter of cuttings,substrates, planting time and other environmental factors for Liriodendron chinense x L. tulipifera are studied with opposite test, uniform test and orthogonal test. The results show that the diameter of summerwood cuttings should be 4 mm- 8 mm and the best is 6 mm - 8 ram;the diameter of hardy branch cuttings should be 6 mm- 10 ram,and the best is 8 mm - 10 ram. Anong the four substrates,the Perlite is the best for summerwood cuttings and the plant ash is the best for hardy branch cuttings. The cuttings can be planted during the mid May to the end of August, but the rooting percentage is highest during the 20 days before or after the beginning of June.