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首页> 外文期刊>Acta Horticulturae >Wood chipping almond brush and its effect on the almond rhizosphere, soil aggregation and soil nutrients.
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Wood chipping almond brush and its effect on the almond rhizosphere, soil aggregation and soil nutrients.

机译：木屑杏仁刷及其对杏仁根际，土壤聚集和土壤养分的影响。

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The wood chipping of almond (Prunus dulcis) prunings could provide an alternative to burning that would not contribute to air pollution and add valuable organic matter to soils. The success of wood chipping depends on whether the wood chips delete the soil of critical nutrients necessary for tree growth. An experiment was established where wood chips were mixed with soil and placed in containers, each with an almond tree, to quantitatively examine the effect of wood chips on soil nutrients, soil aggregation, and the rhizosphere microbial community. Control trees were planted in containers without wood chips. Tissue analysis was performed on leaf petioles to determine whether the wood chips had an effect on nutrient availability. After the 1st year, trees growing with wood chips had less N, Zn, and Mn while P was increased. After the 2nd year, trees with wood chips no longer had less N levels while P and K were significantly increased, but Zn was decreased. Soil analysis after the 1st year showed significantly higher levels of Ca, Mg, Zn, Cu, P, and K with wood chips. The % carbon, NH4-N, cation-exchange-capacity (CEC), electrical conductivity (EC), and % organic matter (OM) were increased. The soil pH and NO3-N levels were decreased. Similar results were obtained the 2nd year except that Mn and Fe levels were decreased in wood chipped soils while B and Na were increased. The CEC was no longer higher in wood chipped soils. When nematode populations were assayed after the 1st year there were less Criconemella and more Bunonema, Doryleimida, and free-living bacterial and fungal feeding nematodes in wood chipped soils. Similar results were obtained after the 2nd year except that root lesion was reduced in wood chipped soils. More basidiomycetes were counted in wood chipped soils and detected at higher levels with ELISA. Larger soil aggregates were found in wood chipped soils. Undisturbed wood chipped soils had more soil aggregates than disturbed wood chipped soils.
机译：杏仁修剪的木屑可以提供一种替代燃烧的方法，不会造成空气污染，也不会向土壤添加有价值的有机物。木屑的成功取决于木屑是否会清除树木生长所必需的重要养分。建立了一个实验，将木片与土壤混合，并放入带有杏仁树的容器中，以定量检查木片对土壤养分，土壤聚集和根际微生物群落的影响。将对照树种植在没有木屑的容器中。对叶柄进行组织分析，以确定木片是否对养分利用率产生影响。第一年后，用木片生长的树木的N，Zn和Mn减少，而P增加。第2年后，带有木片的树木的N含量不再降低，而P和K显着增加，但Zn降低。第一年后的土壤分析显示，木片中的Ca，Mg，Zn，Cu，P和K含量显着较高。碳，NH4-N，阳离子交换容量（CEC），电导率（EC）和有机物百分比（OM）的百分比增加了。土壤pH值和NO3-N含量降低。第2年获得了相似的结果，只是木屑土壤中的Mn和Fe含量降低，而B和Na的含量升高。在木屑土壤中，CEC不再更高。在第一年后对线虫种群进行分析时，木屑土壤中的克雷门氏菌较少，布氏杆菌，多虫纲和自由生活的细菌和真菌为食的线虫。第2年后获得了相似的结果，只是木屑土壤中的根部病变减少了。在木屑土壤中计数了更多的担子菌，并通过ELISA检测到更高的含量。在木屑土壤中发现了较大的土壤团聚体。未受干扰的木屑土壤比受干扰的木屑土壤具有更多的土壤团聚体。

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