Effect of Composite Super Absorbent Polymer on Ryegrass Turf Drought Relief and Fertilizer Conservation

doi:10.11733/j.issn.1007-0435.2026.10.033

Acta Agrestia Sinica ›› 2026, Vol. 34 ›› Issue (10): 3882-3891.DOI: 10.11733/j.issn.1007-0435.2026.10.033

Effect of Composite Super Absorbent Polymer on Ryegrass Turf Drought Relief and Fertilizer Conservation

LIU Wen^1,2, TANG Huai-yong^1,2, QIU Wen-qi^1,2, LIU Tian-zeng^1,2

1. College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, Guangdong Province 510642, China;
2. Guangdong Engineering Research Center for Grassland Science, Guangzhou, Guangdong Province 510642, China

Received:2026-01-16 Revised:2026-03-19 Published:2026-10-10

复合保水剂对黑麦草草坪抗旱保肥性能的影响

刘雯^1,2, 唐怀雍^1,2, 邱文齐^1,2, 刘天增^1,2

1. 华南农业大学林学与风景园林学院, 广东广州 510642;
2. 广东省草业工程技术研究中心, 广东广州 510642

通讯作者: 刘天增, E-mail: liutianzeng@scau.edu.cn
作者简介:刘雯（2002-），女，汉族，江西赣州人，硕士研究生，主要从事草坪草建植养护方向研究，E-mail：liuw2026@163.com
基金资助:
广东省企业科技特派员专项（GDKTP2021049200）资助

Abstract

Abstract: To address the challenges of high-water consumption and nutrient loss in turf management， perennial ryegrass （Lolium perenne） was used as the test material in a pot experiment. Treatments included single water-retaining agent （super absorbent polymer， SAP）， bentonite-based SAP composite， and phosphate-rock-powder-based SAP composite. Turf establishment rate， soil water content， nutrient leaching loss， biomass， and turf visual quality were measured to evaluate the effects of different composite water-retaining agents on drought resistance and fertilizer retention of turf. The results showed that during the turf establishment stage， treatments with water-retaining agents significantly increased soil water content at 7.5 cm depth （P<0.05） and accelerated turf establishment. Under leaching conditions， the bentonite-based composite SAP （SAP+B20） significantly reduced the leaching losses of total nitrogen， total phosphorus， and total potassium （P<0.05）， while maintaining the highest soil available potassium and available nitrogen contents， demonstrating the best fertilizer retention capacity. Under drought stress， the phosphate-rock-powder-based composite SAP （SAP+P20） maintained the highest soil water content at both 7.5 cm and 20 cm depths （P<0.05）， and achieved the highest fresh biomass of aboveground and underground parts as well as the highest comprehensive score of turf visual quality， whereas SAP+B20 produced the highest aboveground dry biomass. In conclusion， composite water-retaining agents exhibit synergistic effects： under leaching conditions， SAP+B20 can reduce nutrient loss. SAP+P20 can enhance soil water-holding capacity， promote turf growth， and improve turf visual quality under drought stress.

Key words: Ryegrass （Lolium perenne）, Composite water-retaining agent, Leaching, Drought stress, Drought resistance, Nutrient retention

摘要： 为解决草坪管理中高耗水与养分流失难题，以多年生黑麦草（Lolium perenne）为材料，采用盆栽试验，设置单一保水剂、膨润土复合保水剂和磷矿粉复合保水剂等处理，测定成坪速度、土壤含水量、养分淋失量、生物量及坪观质量，评价不同复合保水剂对草坪抗旱保肥性能的影响。结果表明，成坪阶段，保水剂处理显著提高7.5 cm土层土壤含水量（P<0.05），加快成坪速度。淋溶条件下，膨润土复合保水剂（SAP+B20）显著降低全氮、全磷和全钾的淋失量（P<0.05），土壤速效钾和速效氮含量最高，保肥能力最优。干旱胁迫下，磷矿粉复合保水剂（SAP+P20）在7.5 cm和20 cm土层均保持最高含水量（P<0.05），其地上、地下生物量鲜重及坪观质量综合评分最高；SAP+B20地上部生物量干重最大。因此，复合保水剂具有协同增效作用：淋溶环境下SAP+B20能减少养分流失；干旱胁迫条件下SAP+P20可增强土壤持水、促进草坪生长并提升坪观质量。

关键词: 黑麦草, 复合保水剂, 淋溶, 干旱胁迫, 抗旱, 保肥

CLC Number:

S543.6

LIU Wen, TANG Huai-yong, QIU Wen-qi, LIU Tian-zeng. Effect of Composite Super Absorbent Polymer on Ryegrass Turf Drought Relief and Fertilizer Conservation[J]. Acta Agrestia Sinica, 2026, 34(10): 3882-3891.

刘雯, 唐怀雍, 邱文齐, 刘天增. 复合保水剂对黑麦草草坪抗旱保肥性能的影响[J]. 草地学报, 2026, 34(10): 3882-3891.

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Effect of Composite Super Absorbent Polymer on Ryegrass Turf Drought Relief and Fertilizer Conservation

复合保水剂对黑麦草草坪抗旱保肥性能的影响

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