| 引用本文: | 孙红星,赵全勇,王勇.再生水及土壤类型对绿化树种耗水和生长的影响[J].灌溉排水学报,2018,37(10):55-62. |
| SUN Hongxing,ZHAO Quanyong,WANG Yong.再生水及土壤类型对绿化树种耗水和生长的影响[J].灌溉排水学报,2018,37(10):55-62. |
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| 摘要: |
| 【目的】探讨再生水合理灌溉城市绿化树种的技术。【方法】以清水灌溉为对照，采用盆栽试验，研究了再生水灌溉对种植在2种土壤质地（砂壤土和粉砂壤土）下的5种绿化树种（云杉、樟子松、侧柏、小叶女贞和白榆）耗水及生长状况变化的影响。【结果】再生水灌溉不会改变不同土壤下各绿化树种的耗水量和Kc值（作物系数）的变化趋势以及耗水量和Kc均值的大小，但可改变小叶女贞的耗水高峰期以及云杉和白榆的Kc峰值时间；除樟子松外，2种水质灌溉下其余4种绿化树种在粉砂壤土中的累积耗水量和Kc值均小于砂壤土，在清水灌溉下云杉、侧柏、小叶女贞和白榆的累积耗水量依次减少13.85%、15.23%、23.27%和8.07%，再生水灌溉下减少17.00%、12.13%、22.48%和11.98%，在清水灌溉下Kc值减少13.51%、15.52%、23.42%和10.21%，再生水灌溉下Kc值减少17.86%、14.54%、20.55%和14.98%；再生水灌溉改变了种植在不同土壤的各绿化树种（除白榆外）株高生长状况，也改变了樟子松和白榆的冠幅生长情况。【结论】清水灌溉下云杉和侧柏适宜在粉砂壤土生长，再生水灌溉下小叶女贞和白榆适宜在砂壤土生长。 |
| 关键词: 再生水； 砂壤土； 粉砂壤土； 树种； 耗水量； 生长 |
| DOI：10.13522/j.cnki.ggps.20170053 |
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| Effects of Reclaimed Water Irrigation and Soil Types on Water Consumption and Growth of Trees |
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SUN Hongxing, ZHAO Quanyong, WANG Yong
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1.College of Geographical Science, Inner Mongolia Normal University, Hohhot 011517, China;2.Inner Mongolia for Water-saving Agricultural Engineering Research Center, Hohhot 011517, China
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| Abstract: |
| 【Objective】Water quality affects physical and biochemical processes in soil and thereby water consumption of plantations. The purpose of this paper is to study the uptake of water by trees in different soils irrigated with reclaimed wastewater taken from a fermentation plant.【Method】The experiments were conducted in plots and we investigated five tree species: Picea asperata, Pinus sylvestris, Platycladus orientalis, Ligustrum quihoui and Ulmuspumila pumila planted in two soil types-sandy loam and silt loam soil. The water consumption of each tree during its growth period was investigated under irrigation with clean water (control) and reclaimed wastewater.【Result】 Irrigation with reclaimed wastewater did not alert the water consumption and the mean crop coefficient Kc for soils, but changed the stage of the highest water consumption of Ligustrum quihoui and the stage where Kc peaked for Picea asperata and Ulmuspumila pumila. The cumulative water consumption and the Kc value of all species but Pinus sylvestris were lower when growing in the silt loam soil than in the sandy loam, regardless of the irrigation water. The cumulative water consumption of Picea asperata, Pinus sylvestris, Ligustrum quihoui and Ulmuspumila pumila decreased by 13.85%, 15.23%, 23.27% and 8.07%, respectively, under clean water irrigation, yet decreased by 17.00%, 12.13%, 22.48% and 11.98% under reclaimed water irrigation, respectively. The Kc decreased by 13.51%, 15.52%, 23.42% and 10.21% under clean water irrigation and 17.86%, 14.54%, 20.55% and 14.98% under reclaimed water irrigation, respectively. Irrigation with reclaimed wastewater changed significantly the growth of all species except Ulmuspumila pumila, and marginally changed the growth of the canopy of Pinus sylvestris and Ulmuspumila pumila in both soils.【Conclusion】 Picea asperata and Platycladus orientalis under clean water irrigation are suitable to be planted in silt loam, while Ligustrum quihoui and Ulmuspumila pumila under reclaimed water irrigation are suitable for platting in the sandy loam. |
| Key words: reclaimed water; sandy loam; silt loam; tree species; water consumption; growth |
