干旱区生态环境知识资源中心(Arid): 25年长期定位不同施肥措施对关中塿土水力学性质的影响

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	25年长期定位不同施肥措施对关中塿土水力学性质的影响
其他题名	Effects of 25-yr located different fertilization measures on soil hydraulic properties of lou soil in Guanzhong area
	兰志龙 1; 杨学云 1; 赵英 2; 张建国 1
来源期刊	农业工程学报
ISSN	1002-6819
出版年	2018
卷号	34 期号:24 页码:100-106
中文摘要	土壤水力学性质和功能的变化是评价长期施肥是否维持土壤可持续健康发展的重要方面。该研究通过采取国家黄土肥力与肥料效益监测基地的表层原状土壤,分析测定了撂荒(LH)、休闲(XX)、不施肥(CK)、单施氮肥(N)、氮磷钾肥(NPK)和有机肥与氮磷钾肥配施(MNPK)6个处理的土壤水分特征曲线、饱和导水率和紧实度等指标,评价了长期定位施肥对土壤基本物理性质和水力学性质的影响。结果表明:1)与CK、N和NPK处理相比,MNPK处理显著提高了土壤有机碳、饱和导水率和孔隙度,而降低了土壤容重和紧实度(P<0.05)。2)不同施肥处理之间的土壤水分特征曲线表现出一定的差异,其土壤持水能力强弱为:XX9 mum大孔隙范围内,其次是<0.2 mum小孔隙范围,0.2~9 mum之间的中孔隙分布较少。综上,MNPK有助于改善土壤结构,提高土壤持水性,降低土壤容重和紧实度,有助于作物生长和高产,是关中地区较为适宜的施肥措施。
英文摘要	Soil moisture is a main limiting factor for crop growth and vegetation reconstruction in the arid and semi-arid areas of the world and it is a key factor for agricultural sustainability and soil productivity.Changes in soil hydraulics and function are major aspects for assessing whether long-term fertilization is beneficial for soil sustainable development or not.The objectives of this study were to determine the soil water retention characteristics of different fertilization treatments based on the long-term located experiment of soil fertility at the Chinese National Soil Fertility and Fertilizer Efficiency Monitoring Base of Loessial Soil established in the autumn of 1990 in Yangling,Shaanxi,China,and to clarify the differences of soil physical properties affected by the fertilization.The experiment was consisted of six treatments:abandonment (LH),fallow(tillage,without planting,XX),no fertilization (CK),single application of nitrogen (N),nitrogen,phosphorus and potassium(NPK),organic manure+NPK (MNPK),and LH and XX are not fertilized,and weeds were regularly removed at XX every year.The soil water retention curve,saturated hydraulic conductivity and soil strength were analyzed and determined by adopting the surface undisturbed soil.The results showed that:1) Long-term fertilization treatment had significant effects on soil organic carbon,saturated hydraulic conductivity and soil strength (P<0.05).Compared with CK,N and NPK,MNPK significantly (P<0.05) increased soil organic carbon,saturated hydraulic conductivity and porosity and reduced soil bulk density and soil strength.2) Soil water retention curve showed a significant difference between treatments,and soil water holding capacity was:XX 9 mum,and the ratio of macropores in different treatments was higher than that of medium pores and small pores,ranging from 22.3% to 30.2%.Compared with medium pores,the ratio of small pores was more.There was the largest ratio for the small pores at the LH,followed by the MNPK,and the XX.In summary,MNPK can improve soil structure and soil water holding capacity,reduce soil bulk density and soil strength and enhance soil stability,which is helpful for crop growth and yield,and is a suitable farming measurement in semi-arid Guanzhong area.
中文关键词	土壤 ; 水力学 ; 水分特征曲线 ; 饱和导水率 ; 土壤紧实度 ; 塿土
英文关键词	soils hydraulic water retention curve saturated hydraulic conductivity soil strength lou soil
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:6404946
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/237999
作者单位	1.西北农林科技大学资源环境学院, 农业部西北植物营养与农业环境重点实验室, 杨凌, 712100; 2.西北农林科技大学资源环境学院;;鲁东大学资源与环境工程学院, 农业部西北植物营养与农业环境重点实验室;;, 杨凌;;烟台, ;; 712100;;264025
推荐引用方式 GB/T 7714	兰志龙,杨学云,赵英,等. 25年长期定位不同施肥措施对关中塿土水力学性质的影响[J]. 西北农林科技大学,2018,34(24):100-106.
APA	兰志龙,杨学云,赵英,&张建国.(2018).25年长期定位不同施肥措施对关中塿土水力学性质的影响.农业工程学报,34(24),100-106.
MLA	兰志龙,et al."25年长期定位不同施肥措施对关中塿土水力学性质的影响".农业工程学报 34.24(2018):100-106.