平欧杂种榛复合经营对土壤理化性质的影响  

The impact of compound management of Corylus heterophylla×C.avellana on soil physicochemical properties

作　　者：成文博 CHENG Wenbo(Research Institute of Sand Control and Utilization in Liaoning Province,Fuxin 123000,China)

机构地区：[1]辽宁省沙地治理与利用研究所,辽宁阜新123000

出　　处：《辽宁林业科技》2024年第6期20-22,78,共4页Liaoning Forestry Science and Technology

摘　　要：平欧杂种榛作为辽西低山丘陵区的重要经济林树种,其复合经营模式可以提高土地利用效率,提升生态效益。为了更有效地利用平欧杂种榛幼林地,提高整体经济效益,在义县果树农场的平欧杂种榛示范园内,开展了三种复合经营模式(榛-农、榛-药、榛-草),并以清耕(即榛子纯林)为对照,研究复合经营模式对林地土壤理化性质的影响。结果表明,所有平欧杂种榛复合经营模式均能有效增加土壤厚度,优化土壤团粒结构,并能减少土壤侵蚀。其中,榛-农模式在提升土壤层厚度方面的效果最为显著。此外,平欧杂种榛复合经营还能提高浅层土壤(0~20 cm)的含水率,并降低其容重;而对于深层土壤(20~40 cm)的含水率和容重影响则相对较小。综上所述,平欧杂种榛复合经营模式能够显著改善林地土壤的理化性质。As an important economic forest tree species in the low mountains and hills of western Liaoning,the hybrid hazelnut(Corylus heterophylla×C.avellana)can enhance land use efficiency and improve ecological benefits through its composite management models.In order to more effectively utilize the young hybrid hazelnut forests and enhance overall economic benefits,three agroforestry models(hazelnut-crop,hazelnut-herbal medicine,and hazelnut-grass)were implemented within the hybrid hazelnut demonstration garden at the Yixian Fruit Tree Farm,with clear cultivation(pure hazelnut forests)serving as a control.The study investigated the impact of these composite management models on the physicochemical properties of forest soil.The results indicate that all hybrid hazelnut composite management models can effectively increase soil thickness,optimize soil aggregate structure,and reduce soil erosion.Among them,the hazelnut-crop model shows the most significant effect in increasing soil layer thickness.Furthermore,hybrid hazelnut composite management can also increase the moisture content of shallow soil(0~20 cm)and reduce its bulk density,while the impact on the moisture content and bulk density of deep soil(20~40 cm)is relatively smaller.In summary,the composite management models of hybrid hazelnut can significantly improve the physicochemical properties of forest soil.

关 键 词：平欧杂种榛 复合经营 土壤理化性质 辽西低山丘陵区 

分 类 号：S664.4[农业科学—果树学]