干旱区生态环境知识资源中心(Arid): 半湿润与半干旱区黄绵土冬小麦农田土壤剖面特征研究

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	半湿润与半干旱区黄绵土冬小麦农田土壤剖面特征研究
其他题名	Loessal Soil Profile Properties of Winter Wheat Field in Semi-humid and Semi-arid Zones
	吕国华 1; 李小强 2; 白文波 1; 王罕博 1; 宋吉青 1
来源期刊	土壤通报
ISSN	0564-3945
出版年	2019
卷号	50 期号:5 页码:1033-1037
中文摘要	为研究不同气候区黄绵土的土壤剖面差异,本研究基于土壤剖面调查数据,分析了半湿润区和半干旱区冬小麦农田的土壤剖面特征及土壤基本属性。结果表明:半湿润区土壤剖面存在明显的犁底层,犁底层土壤容重接近1.60 g cm~(-3),土壤结构体以片状和棱柱状为主,淋溶层存在显著的石灰性沉积,pH显著高于其他土层;半干旱区无显著犁底层,土壤容重在1.40 g cm~(-3)左右,土壤结构体以块状和团粒为主,没有显著的石灰性沉积;不同区域黄绵土土壤颗粒均以粉砂粒为主,黏粒含量低于10%,半干旱区黏粒含量低于半湿润区;除表层以外,其他各层< 0.25 mm水稳性团聚体比例超过50%,不利于蓄积水分养分;有机质、氮及速效磷含量较低是土壤肥力的主要障碍因子。
英文摘要	In order to investigate the differences in loessal soil profiles between semi-humid zone and semi-arid zone,soil profile characteristics and soil properties were analyzed after field investigations.Results showed that plough pan appeared in the semi-humid zone and soil bulk density approached to 1.60 g cm~(-3).The shapes of soil structure were mainly platy and prismatic.Calcareous deposition appeared in the eluvial soil layer with the highest pH value.There was no obvious plough pan with bulk density of about 1.40 g cm~(-3)and granular and blocky soil structure without calcareous deposition in the semi-arid zone.Silt was the main particle composition in the two zones.The percent of clay was less than 10%, and was less in the semi-arid zone than that in the semi-humid zone.The percentages of < 0.25 mm water stable aggregate were larger than 50% in each layer (except for the top soil), which were not useful for the water and nutrients storage.The low contents of soil organic matter, nitrogen, available phosphorus were the main obstacle factors of soil fertility.
中文关键词	黄绵土 ; 气候区 ; 土壤剖面 ; 土壤属性
英文关键词	Loessal soil Climate zone Soil profile Soil property
语种	中文
收录类别	CSCD
WOS类目	AGRONOMY
WOS研究方向	Agriculture
CSCD记录号	CSCD:6641129
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315791
作者单位	1.中国农业科学院农业环境与可持续发展研究所, 北京 100081, 中国; 2.富平县农业技术推广中心, 渭南, 陕西 711700, 中国
推荐引用方式 GB/T 7714	吕国华,李小强,白文波,等. 半湿润与半干旱区黄绵土冬小麦农田土壤剖面特征研究[J],2019,50(5):1033-1037.
APA	吕国华,李小强,白文波,王罕博,&宋吉青.(2019).半湿润与半干旱区黄绵土冬小麦农田土壤剖面特征研究.土壤通报,50(5),1033-1037.
MLA	吕国华,et al."半湿润与半干旱区黄绵土冬小麦农田土壤剖面特征研究".土壤通报 50.5(2019):1033-1037.