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Sciences in Cold and Arid Regions ›› 2022, Vol. 14 ›› Issue (3): 212–222.doi: 10.3724/SP.J.1226.2022.21056.

• • 上一篇    

  

  • 收稿日期:2021-06-15 接受日期:2021-12-27 出版日期:2022-06-30 发布日期:2022-07-04

Decomposition effects of Lanzhou lily (Lilium davidii var. unicolor) flowers on soil physical and chemical properties and microbial community diversity

Jie Li1,2,YaJun Wang1(),Yang Qiu1,ZhongKui Xie1,YuBao Zhang1,CuiPing Hua1,2   

  1. 1.Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China
    2.University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2021-06-15 Accepted:2021-12-27 Online:2022-06-30 Published:2022-07-04
  • Contact: YaJun Wang E-mail:wangyajun@lzb.ac.cn
  • Supported by:
    Major Special Science & Technology Project of Gansu Province(Y839C01001)

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Abstract:

Timely removal of the flower is a key agricultural measure to ensure the concentrated supply of nutrients for the growth of underground bulbs and to increase the yield of lilies. Removing flowers and returning them to the field is one of the traditional ways of treatment, and field litter is formed at this time. Previous study showed that the decomposition of litter changes the soil properties. In order to study the effects of lily litter decomposition on soil physical and chemical properties and microbial structure, three treatments were set up in reference to the Decomposition Bag Method: control (CK), Lanzhou lily flower treatment (LZF), and Zhongbai No.1 flower treatment (ZBF). The effects of lily decomposition on soil physical and chemical properties and microbial community composition were studied in order to provide a scientific basis and theoretical guidance for the planting process of Lanzhou lily. The results show that the decomposition of lily flowers significantly increased the contents of soil organic matter, soil total nitrogen, soil total phosphorus and soil available potassium, and decreased soil pH. RDA shows that soil available nutrients and pH were the driving factors for the change of the soil microbial community. A short-term change of soil microenvironment caused by the decomposed lily flower is beneficial to growing the Lanzhou lily. However, under the correlation analysis of environmental factors, the long-term effects of returning the Lanzhou lily flower to the field, such as the trend of soil acidification, need to be further studied.

Key words: removing flower, litter decomposition, soil physicochemical properties, microbial diversity

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TreatmentSoil physicochemical properties
OM (g/kg)TN (g/kg)TC (g/kg)TP (g/kg)AN (mg/kg)AP (mg/kg)AK (mg/kg)pHECC/N
CK10.96±0.72b1.07±0.02b24.39±0.31b1.86±0.02b

49.73±

4.61a

55.95±

0.43b

290.00±

10.00c

8.81±0.20a333.00± 70.19b22.71±0.67a
LZF13.19±0.92a1.24±0.08ab25.83±0.92a1.94±0.03a

46.59±

4.05a

69.85±

4.88ab

480.00±

0.00b

8.50±0.03b512.33±48.19ab20.91±0.63ab
ZBF14.42±0.42a1.30±0.13a26.17±0.19a1.97±0.03a

53.46±

0.81a

91.88±

23.04a

530.00±

34.64a

8.34±0.13b777.67±283.55a20.11±1.74b

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TaxonSampleReadsOTUsAlpha diversityCoverage
RawQualifiedShannonChao1
BacteriaCK98,746±3,90697,670±3,6553,468±361a9.470±0.145a4,730±1,229a98.6%±0.400a%
LZF98,466±2,564103,892±2,5003,852±68a9.752±0.031a4,270±68a98.7%±0.000a%
ZBF102,413±4,330102,578±4,2603,768±162a9.701±0.034a4,158±196a98.8%±0.100a%
FungiCK104,574±4,44898,813±4,223976±8a5.686±0.038a1,102±23a99.600%±0.033b%
LZF92,401±15,52089,776±15,283953±42a4.214±0.103b1,073±47a99.600%±0.000b%
ZBF105,551±2,541103,763±2,541642±31b4.053±0.049b731±33b99.700%±0.000a%

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