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林业科学 ›› 2020, Vol. 56 ›› Issue (3): 164-171.doi: 10.11707/j.1001-7488.20200317

• 研究简报 • 上一篇    下一篇

城市污泥和园林废弃物混合堆肥对桑树种子萌发和幼苗生长的影响

乔永1,王小平1,2,*   

  1. 1. 北京林业大学林学院 北京 100083
    2. 北京市园林绿化局 北京 100013
  • 收稿日期:2019-05-13 出版日期:2020-03-01 发布日期:2020-04-08
  • 通讯作者: 王小平
  • 基金资助:
    北京市科技计划项目(Z151100002115006)

Effects of Mixed Compost of Municipal Sludge and Garden Waste on Germination and Seedling Growth of Mulberry

Yong Qiao1,Xiaoping Wang1,2,*   

  1. 1. Forestry College, Beijing Forestry University Beijing 100083
    2. Beijing Municipal Bureau of Landscape and Forestry Beijing 100013
  • Received:2019-05-13 Online:2020-03-01 Published:2020-04-08
  • Contact: Xiaoping Wang

摘要:

目的: 研究不同施用量及不同配比的城市污泥和园林废弃物混合堆肥对桑树种子萌发和幼苗生长的影响,探究有利于桑树生长的施用量及配比的混合堆肥最佳组合,为城市污泥和园林废弃物的合理利用提供科学依据。方法: 配制不同施用量(CK、T1、T2、T3、T4,即混合堆肥与土壤体积比为0:1、1:3、1:1、3:1、1:0)及4种不同配比(W01、W13、W11、W10,即城市污泥和园林废弃物体积比分别为0:1、1:3、1:1、1:0)的城市污泥和园林废弃物混合堆肥产品,通过盆栽试验,观察其对桑树种子萌发、幼苗不同时期株高及地上、地下生物量积累的影响。结果: 4种不同配比混合施肥的全部处理均对桑树种子萌发产生抑制作用,在施肥量相同情况下,W10配比对种子萌发抑制作用最强烈;在各配比中,T4处理对桑树种子萌发抑制程度最高;在桑树幼苗生长前期(30~60天),各配比幼苗堆肥产品随施肥量增加均显著抑制桑树幼苗生长,抑制作用随试验时间延长而减弱,在试验后期(120天),一些配比处理转为促进桑树混合生长,幼苗株高最大值出现在W11配比T2处理;除W10配比T4处理外,其余全部处理均不同程度提高桑树地上、地下生物量积累。结论: 城市污泥和园林废弃物混合堆肥产品会对桑树种子萌发产生抑制作用,并显著抑制桑树幼苗前期生长,但随时间延长会促进桑树幼苗生长和生物量积累,其中以W11配比T1处理(施用25%的污泥和园林废弃物体积比1:1混合堆肥)效果最佳。

关键词: 城市污泥, 园林废弃物, 混合堆肥, 桑树

Abstract:

Objective: This study aims to find the optimal compost mixtures for mulberry growth. The effects of different ratios of compost mixtures of municipal sludge and garden waste and their application amount on mulberry growth were investigated, in order to provide the scientific basis for the circulation of garden waste and municipal sludge. Method: A poting experiment was conducted with a design of four different compost products and different dosages. Municipal sludge and garden waste were mixed at four volume ratios (0:1, 1:3, 1:1, 1:0, marking as W01, W13, W11, W10), and each compost was put together with soil at different volume ratios (0:1, 1:3, 1:1, 1:3, 1:0, marking as CK, T1, T2, T3, T4). The germination, plant height in different growth periods and biomass were measured in the poting experiment. Result: The germination of mulberry seeds were inhibited by all four compost mixtures.The germination was most strongly inhibited by W10 ratio under the same fertilization, and the germination was most strongly inhibited by T4 in all of the four different compost mixtures. The growth of mulberry seedlings was inhibited to various degrees with the increase of fertilizer application at the early growth stage (30-60 d), and the inhibition was weakened at the subsequent growth phase, and even the growth promotion happened by some treatments.The maximum plant height appeared in T2 treatment with W11 ratio. The biomass accumulations of aboveground and underground were increased to various degrees by all the treatments except T4 of W10. Conclusion: Mixed compost products containing sludge can inhibit the germination and the early growth of mulberry seedlings, however the growth and biomass accumulation of mulberry seedlings can be promoted with the development of time, among which the best effect is to apply 25% mixed compost with 1:1 ratio of sludge and garden waste.

Key words: municipal sludge, garden waste, mixed compost, mulberry

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