保水剂对冷地型草坪草种子萌发的影响  

Effect of the Moisture-holding Agent on the Seed Germination of Cool-season Turfgrass

作　　者：包文华[1] 梅晓东[2] 方芳[1] 卢春燕[1] 袁惠燕[1] 

机构地区：[1]苏州大学,江苏苏州215123 [2]中新苏州工业园区市政物业管理有限公司,江苏苏州215000

出　　处：《安徽农业科学》2009年第15期6968-6969,6971,共3页Journal of Anhui Agricultural Sciences

摘　　要：[目的]研究不同土壤水分条件下保水剂对两种冷地型草坪草种子出苗的影响,为保水剂的推广运用提供理论依据。[方法]通过盆栽育苗法,研究不同用量保水剂对土壤含水量及两种冷地型草坪草种子出苗的影响。[结果]随着播种时间的延长,土壤保水剂用量增加高,高羊矛和多年生黑麦草种子发芽率逐渐提高。当保水剂达到6 g/kg用量时,两种草坪草种子平均发芽率分别达到53.83%和77.16%。与8 g/kg、10 g/kg处理无显著差异。前10 d各草种不同保水剂处理的土壤含水量下降较快,随着时间的进行,保水剂用量少的处理土壤含水量下降速率迅速减慢,而保水剂用量多的处理土壤含水量下降速率变化不大。[结论]经保水剂处理后,草种发芽率明显提高,幼苗生长增快。干旱条件下适当浓度的保水剂可以提高土壤的含水量,对草坪草种子出苗及生长也有一定促进作用。[ Objective] The theoretical basis of the use of water retaining agent was provided through the experiment in the effect of the application of water retaining agent in the soil with the different soil moisture conditions on two species of cool-season tmfgrass seed germination. [Method] The effect of the different application arrounts of water retaining agent on two species of cool-season turfgrass seed germination was researched with potted experiment in seedling-raising. [ Results] As the sowing time was prolonged and the application amounts of water retaining agent was increased, the germination rate of tall spear and perennial ryegrass seed was gradually improved. When the amount of water retaining agent was 6 g/kg, the germination rate of two turfgrass varieties reached averagely to 53.83 % and 77.16%,which was not significant difference with the treatment of 8 g/kg or 10 g/kg. the content of water in soil was rapidly decreased in the fwst 10 days after the treatments,and then,the rate of the content-decreasing of water in soil was slowed down in the treatment of low application amount and there was no variation in the treatment of high application amount of water retaining agent. [ Conclusion ] After the treatment, the rate of seed germination was significantly increased and the seedling growth was quickly increased. Under the drought condition, the content of moisture in soil could be improved by appropriate application amount of water retaining agent,which improved the seed germination and seedling growth.

关 键 词：保水剂 草种 发芽率 土壤含水量 

分 类 号：S688.4[农业科学—观赏园艺]