保水剂施用层次对草坪生长及土壤水肥的影响

doi:10.11686/cyxb20140407

摘要/Abstract

摘要： 本研究利用多年生黑麦草草坪,探究保水剂在土壤中的最佳施放层次,以提高草坪土壤的水肥利用率。实验将保水剂分别施放在土壤表层以下0,5,10和15 cm处,采用正常浇水和大淋浇水两种不同灌水方式,定期观测黑麦草生长速度、土壤体积含水量、淋溶液养分淋失量、土壤养分变化以及草坪外观质量等指标。实验结果表明,黑麦草草坪7.5 cm浅层和20 cm深层土壤体积含水量、养分持有能力、草坪密度均受不同层次施用保水剂影响,保水剂在深层和浅层施用都能发挥保水作用,提高草坪肥料持有能力。土壤表层以下5 cm施用保水剂对土壤水分的保持能力最强,对N和P的保持能力最好,草坪密度最大,为施用保水剂的最佳层次。

Abstract: The study was conducted to research best layer which can be applied super absorbent polymer for increasing usage rate of water and fertilizer in perennial ryegrass turf medium. The treatment was applying SAP 5 cm under the soil horizon,10 cm under the soil horizon,15 cm under the soil horizon and blank control respectively. It adopted two different watering methods: normal irrigation and large leaching irrigation,and then we tested and analyzed turfgrass growth rate,soil water content,amount of leaching nutrient,change of soil nutrient and perennial ryegrass turfgrass apparent traits at regular intervals. The study illustrated that 20 cm deep and 7.5 cm shallow applied layer had different effects on soil water content,the capacity of retaining fertilizer,turf density,and SAP can improve the capacity of retaining fertilizer and play a role in water retention in perennial ryegrass turfgrass in different layers. Applying SAP at 5 cm under the soil horizon was considered the best layer in turf medium as this depth had the best capacity of water,N and P retention,as well as producing the maximum turf density.

中图分类号:

S543⁺.6

李佳岭，李龙保，廖宗文，刘天增，张巨明. 保水剂施用层次对草坪生长及土壤水肥的影响[J]. 草业学报, 2014, 23(4): 61-67.

LI Jia-ling,LI Long-bao,LIAO Zong-wen,LIU Tian-zeng,ZHANG Ju-ming. The effect of different super absorbent polymer applying layer on turf growth and soil water and fertility[J]. Acta Prataculturae Sinica, 2014, 23(4): 61-67.

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