LIU Rong,LI Zhenhua,ZHANG Xinxin,et al.Effects of Interaction of Water Retention Agent and Nitrogen，Phosphorus and Potassium Fertilizer on the Growth and Physiology of Perennial Ryegrass Under Drought Stress[J].Northern Horticulture,2022,(12):64-71.[doi:10.11937/bfyy.20215144]
保水剂与氮磷钾肥互作对干旱胁迫下多年生黑麦草生长生理的影响
- Title:
- Effects of Interaction of Water Retention Agent and Nitrogen，Phosphorus and Potassium Fertilizer on the Growth and Physiology of Perennial Ryegrass Under Drought Stress
- Keywords:
- perennial ryegrass; drought stress; water retaining agent; nitrogen; phosphorus and potassium fertilizer
- 文献标志码:
- A
- 摘要:
- 以多年生黑麦草“绿宝石”（Lolium perenne L.）为试材，采用盆栽试验法，研究了干旱胁迫下保水剂与氮磷钾肥互作对多年生黑麦草生长生理的影响，以期为实现草坪草的水肥一体化调控提供参考依据。结果表明：在土壤水分充足时，保水剂的添加以及保水剂与肥料互作对多年生黑麦草的影响较小；当土壤含水量为55%的土壤最大持水量时，不施肥情况下25 g?m-2的保水剂处理以及施肥情况下50 g?m-2的保水剂与氮磷钾肥互作，均能够促进多年生黑麦草的叶表面积、叶片长度、根表面积和根系总长度的增加，增大多年生黑麦草叶片相对含水量和叶绿素含量，降低叶片相对电导率、丙二醛含量和脯氨酸含量。
- Abstract:
- Taking the perennial ryegrass ‘Emerald’ (Lolium perenne L.) as the test material，the pot experiment was conducted,the effects of the interaction of water-retaining agent and nitrogen，phosphorus and potassium fertilizer on the growth physiology of perennial ryegrass under drought stress were studied，in order to provide reference for the integrated regulation of water and fertilizer on turfgrass.The results showed that when the soil moisture was sufficient，the addition of water-retaining agent and the interaction of water-retaining agent and fertilizer had little effect on perennial ryegrass;when the soil moisture content was 55% of the maximum soil water holding capacity，25 g?m-2 water retention agent treatment without fertilization and 50 g?m-2 water retention agent interaction with nitrogen，phosphorus and potassium fertilizers under fertilization could promote perennial ryegrass growth.The increase in leaf surface area，leaf length，root surface area and total root length of perennial ryegrass,increased the relative water content and chlorophyll content of perennial ryegrass leaves，and reduced the relative electrical conductivity，malondialdehyde content and proline content of leaves.
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备注/Memo
第一作者简介：刘容（1998-），女，硕士研究生，研究方向为草坪学。E-mail：liur20@lzu.edu.cn.责任作者：柴琦（1971-），男，博士，教授，现主要从事草坪学等研究工作。E-mail：chaiqi@lzu.edu.cn.基金项目：南通市应用基础研究资助项目（MS12017019-2）。收稿日期：2021-12-17