Effect of Different Mulching Materials on Soil Physical and Chemical Properties of Potted Pear Trees(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:

2014年05期

Page:

6-11

Research Field:

Publishing date:

Info

Title:

Effect of Different Mulching Materials on Soil Physical and Chemical Properties of Potted Pear Trees

Author(s):

Effect of Different Mulching Materials on Soil Physical and Chemical Properties of Potted Pear Trees

1.College of Horticulture，Agricultural University of Hebei，Pear Engineering and Technology Research Center of Hebei Province，Baoding，Hebei 071001；

2.Hebei North University，Zhangjiakou，Hebei 075000

Keywords:

Yali pear; pot culture; soil mulch; physical and chemical property; soil nutrient

PACS:

S 661.2

DOI:

-

Abstract:

With potted Yali young tree as the samples，the effect of different mulching materials on soil physical and chemical properties were studied，including fresh grasses of alfalfa (Medicago sativaL.)，lofty fescue grass (Festuca elataKeng)and Kentucky bluegrass (Poa pratensisL.) as well as wheat straw，transparent and black plastic films.The results showed that different mulching materials could consistently raise the water-holding capacity with the wheat straw showing best.The maximal temperature-increasing effect was found in the treatment of transparent plastic film with annual average temperature increasing by 3.40℃，while the alfalfa mulch exhibited the maximal temperature decrease with annual average temperature reducing by 0.68℃.The greatest variation of daily temperature occurred in transparent plastic film mulch (achieving 5.30℃)，while only 1.67℃ was found with lofty fescue grass mulch.As far as the influence on soil texture，a significant difference existed between wheat straw and the control，with soil bulk density lowering by 8.82% and total porosity increasing by 9.09%.The maximal soil organic matter content was found in lofty fescue grass mulch，increasing by 26.80%.Moreover，alfalfa mulch showed the most significant increase in soil alkali-hydrolysis nitrogen and rapidly available phosphorus contents，increasing by 28.89% and 106.21%，respectively；lofty fescue grass mulch showed the largest content of available potassium，being 244.96 mg/kg and most significant effect on total amount of nutrient in soil，with total nitrogen，phosphorous and potassium contents increasing by 46.03%，30.30% and 7.99%，respectively.In addition，the soil enzyme activities varied with different mulching materials with alfalfa mulch showing maximal activity of soil invertase (rising by 32.84%)，with Kentucky bluegrass mulch showing the largest soil urease activity (rising by 21.97%) and with lofty fescue grass mulch showing the highest phosphatase activity (rising by 56.00%).Compared to the control，the effect of transparent and black plastic films on soil nutrient changes was not significant.

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