摘要
定量分析了建筑垃圾环境下干旱胁迫对栾树生长的影响,为栾树养护的土壤和气候条件提供指导。对园林划分不同区块进行对比试验,建筑垃圾覆盖于已种栾树苗木的地面表层记为A组,建筑垃圾的厚度在2 cm内;建筑垃圾在种植栾树过程中拌和到整个种植根部记为B组,根据拌和比例再细分3组;分别展开生长跟踪统计和干旱胁迫统计。结果表明:建筑垃圾覆盖于土壤表层有利于栾树的生长,这可能是建筑垃圾在土壤表层能够起到隔离水分蒸发,为生物幼虫的繁殖和生长提供更好的条件,A组的生物总重量增长率96.8%,而对照组为91.1%;在中度干旱胁迫下,A组栾树生物总重降低了7.67%,对照组降低了10.05%。建筑垃圾拌和于土壤中时,轻度干旱胁迫下B3组栾树生物总量下降了1.99%;在中度干旱胁迫下,B3栾树生物总重量下降25.99%。当建筑垃圾薄层覆盖于土壤表面,能够起到水分蒸发隔离、增加土壤的透气性作用,能够为栾树提供有益的土壤环境;当建筑垃圾拌和于土壤时会对栾树生长带来影响,并随着拌和量增加影响越显著。
To quantitatively analyze the growth effects of drought stress on Koelreuteria paniculata in soil with construction waste,and provide guidance for soil and climate conditions for Koelreuteria paniculata maintenance,experimental comparison was conducted on different blocks of garden division.Construction waste covering the ground surface of planted Koelreuteria paniculata seedlings was recorded as Group A,and the thickness of construction waste was within 2 cm;During the process of planting Koelreuteria paniculata,construction waste is mixed to the entire root of the plant and recorded as Group B,which is further divided into three groups based on the mixing ratio;growth tracking statistics and drought stress statistics are analyzed separately.Covering the soil surface with construction waste was beneficial for the growth of Koelreuteria paniculata,which may be due to the fact that construction waste can isolate water evaporation on the soil surface and provide better conditions for the reproduction and growth of other biological larvae.The total weight growth rate of Group A was 96.8%,while the control group was 91.1%;Under moderate drought stress,the total biomass of group A Koelreuteria paniculata decreased by 7.67%,while the control group decreased by 10.05%.When construction waste was mixed with soil,the total biomass of B3 group Koelreuteria paniculata decreased by 1.99%under mild drought stress;Under moderate drought stress,the total biological weight of B3 Koelreuteria paniculata decreased by 25.99%.When a thin layer of construction waste is covered on the soil surface,it can provide a certain degree of water evaporation isolation,increase soil permeability,and provide a beneficial soil environment for the Koelreuteria paniculata;When construction waste is mixed with soil,it will have an impact on the growth of Koelreuteria paniculata,and the impact becomes more significant with the increase of mixing amount.
作者
王俊先
Wang Junxian(Fengtai District Landscape Service Center of Beijing,Beijing 100076,China)
出处
《绿色科技》
2024年第5期81-84,共4页
Journal of Green Science and Technology
关键词
建筑垃圾
干旱胁迫
栾树
construction waste
drought stress
Koelreuteria paniculata
