含蒙脱土和多糖的保水剂对高羊茅品种可奇思种子萌发及生长的影响

摘要

采用正交实验法在室温下合成了含有天然产物蒙脱土(MMT)和羧甲基纤维素钠(CMC)的系列环境友好型保水剂，研究了不同保水剂组成和合成条件对高羊茅品种可奇思(简称可奇思)种子发芽及生长指标的影响规律。结果表明，试验合成的保水剂能显著提高可奇思的发芽能力和植株的生长指标，天然组分 MMT 和 CMC 含量对其发芽和植株生长影响显著。用性能最佳的保水剂处理可奇思种子，其发芽率、发芽指数、活力指数、总干重、总根长和总分蘖数分别比空白对照试样提高了61.6%、80.5%、125%、102%、67.6%和68.6%，比市售合成类保水剂对照试样提高了4.50倍、5.50倍、7.60倍、6.88倍、3.88倍和3.92倍，这对提高可奇思种子发芽能力和促进其植株生长具有重要意义，对该保水剂在可奇思种子发芽中的应用提供了试验依据。%Environmentally-friendly super-absorbent composites containing natural products such as mont-morillonite (MMT)and sodium carboxymethyl cellulose (CMC)were prepared at room temperature using or-thogonal experiment.The effects of natural products content and synthetic conditions on seed germination and growth capability of tall fescue Cochies were investigated.Rresults showed that the synthesized super-absorb-ents can significantly improved the seed germination and plant growth of Cochies.The orthogonal range analysis showed that MMT and CMC content have great influence on the seed germination and plant growth of Cochies. After treating the Cochies seeds with the optimum superabsorbent composites,their germination rate,germina-tion index,vigor index,total dry weight,total root length and total number of tillers were increased by 61.6%, 80.5%,125%,102%,67.6%,68.6%(compared to control)and by 4.5,5.5,7.6,6.88,3.88,3.92 times(com-pared to commercially available synthetic super-absorbents),respectively,which is practical to improve seed ger-mination capacity and growth of Cochies,providing an experimental basis for this super-absorbents in the appli-cation of Cochies.