石河子垦区土壤有效硅空间分布及影响因素

发布时间：2018-06-02 12:10

本文选题：土壤有效硅 + 石河子垦区　；参考：《西北农业学报》2016年02期

【摘要】：通过野外取样实测和基于ArcGIS软件的地统计学分析空间插值方法对石河子垦区18个农牧团场(莫索湾、下野地、安集海、石河子)土壤有效硅(SiO_2)及其空间分布状况进行调查分析,并研究土壤机械组成、有机质、全氮、全磷、及pH等理化指标对土壤有效硅影响的关系。结果表明:石河子垦区耕层0~20cm土壤有效硅处于较丰富水平,平均质量分数为313.3mg·kg-1。受"高山-绿洲-沙漠"山盆结构地形地貌影响,石河子垦区有效硅空间分布存在明显不均衡性,整体呈现东南高而西北较低的特点。4个灌区土壤有效硅平均质量分数顺序为:石河子安集海莫索湾下野地。垦区土壤pH为7.58~9.11,在此范围内有效硅随pH增加而明显降低。垦区土壤有效硅显著受土壤粘粒影响,并随土壤粘粒的增加而升高(r=0.291,P0.01)。土壤有效硅与土壤肥力因素中的有机质和全磷呈极显著正相关,但与土壤全氮相关性不明显。可见,土壤有效硅与土壤pH、粘粒、有机质、全磷紧密相关。
[Abstract]:The spatial distribution of soil available silicon sio _ 2 in 18 farm farms (Moso Bay, Lower Field, Anji Sea, Shihezi) in Shihezi Reclamation area was investigated by field sampling and spatial interpolation method based on geostatistics analysis based on ArcGIS software. The effects of physical and chemical indexes such as soil mechanical composition, organic matter, total nitrogen, total phosphorus and pH on soil available silicon were studied. The results showed that the available silicon in 0~20cm soil was abundant in Shihezi reclamation area, and the average mass fraction of available silicon was 313.3mg kg-1. The spatial distribution of available silicon in Shihezi Reclamation area is obviously unbalanced due to the topography and landform of the mountain basin structure of "Alpine Oasis Desert". The order of the average mass fraction of available silicon in the four irrigated areas is as follows: lower Mosuo Bay, Anji Bay, Shihezi. The soil pH was 7.58 ~ 9.11, and the available silicon decreased with the increase of pH. Soil available silicon was significantly affected by soil clay and increased with the increase of soil clay. Soil available silicon was positively correlated with organic matter and total phosphorus in soil fertility factors, but not with soil total nitrogen. It can be seen that soil available silicon is closely related to soil pH, clay, organic matter and total phosphorus.
【作者单位】：石河子大学农学院新疆生产建设兵团绿洲生态农业重点实验室;
【基金】：国家科技支撑计划(2013BAB03B02)~~
【分类号】：S153.6

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