不同基质对夜香树扦插生根的影响

本试验以夜香树嫩枝为插穗，采用5种不同基质：珍珠岩、蛭石、河沙、珍珠岩＋蛭石（1:1）、珍珠岩＋蛭石（2:1），来研究其对夜香树扦插生根的影响。结果表明：在不同基质中，其幼根的生长情况不同，其中珍珠岩+蛭石(1:1)和珍珠岩较快；不同基质对夜香树根长、根粗、根重等影响很大，珍珠岩+蛭石(1:1)效果较好；根据根系活力、叶绿素含量、可溶性糖指标的测定，珍珠岩+蛭石(1:1) 与珍珠岩较好。综合各项指标知：珍珠岩+蛭石(1:1)更适合作为夜香树插穗基质。

Effects of Different Media on Rooting of Night Jusmine Cutting

The purpose of this experiment was to search optimal substrate that adapt to cuttings rootage of Cestrum nocturnurm with excellent perfomance and lower cost.Perlite,vermiculite, sand, perlite vermiculite(1:1) and perlite vermiculite(2:1) were selected as substrates in this experiment.In order to select optimal substrate, physical properties of different substrates and morphological and physiological indexes of cuttings were studied.The results showed that perlite vermiculite(1:1) and perlite could improve root growth because of their better heat preservation, moisture preservation and ventilation status compare with other substrates.The substrates that perlite vermiculite(1:1) and perlite have great effects on root length, root rough and root weight of Cestrum nocturnurm cuttings.There were higher root vigor, chlorophyll content and soluble sugar content when cuttings were planted in the ermiculite perlite(1:1) or perlite.From all indexes of this experiment, we could know that vermiculite perlite(1:1) was the optimal substrate of Cestrum nocturnurm cuttings propagation.