干旱区生态环境知识资源中心(Arid): 毛乌素沙地南缘保护性耕作措施对土壤物理性质的影响

Arid

	毛乌素沙地南缘保护性耕作措施对土壤物理性质的影响
其他题名	The effects of conservation tillage on soil physical properties in the southern part of the MuUs desert
	雷金银; 吴发启; 马璠; 马波; 李荣标
ISSN	1000-7601
出版年	2008
卷号	26 期号:3 页码:161-166
中文摘要	为了探讨不同保护性耕作措施在毛乌素沙地南缘的区域适应性, 从2004开始,以靖边县北部风沙区农田为研究对象,选用了免耕、秸秆覆盖、覆膜和传统翻耕(CK)4种措施,采用完全随机试验设计进行了田间定位试验研究.比较分析了4种措施下土壤物理性质的变化规律.结果表明,秸秆覆盖和免耕地的地温在春播初期略比传统翻耕低0.1℃,但随后迅速回升,覆膜在玉米生长期都高于其他措施.耕作措施对播种前土壤容重没有显著影响,而对收获后土壤容重影响显著,与传统翻耕相比,免耕降低了表层土壤容重2.3%,但次层20～40 cm容重增加了1.8%.3种保护性耕作措施均增加了土壤含水量,顺序依次为秸秆覆盖＞覆膜＞免耕＞翻耕,且在作物需.
英文摘要	Conservation tillage can reduce soil wind erosion and control soil degradation in sandy area.The objective of this field experiment was to compare the effects of four tillage measurements(no-till,stalk-mulching,film-mulching and conventional tillage) on soil physical properties the sandy soil region of northern Jingbian County,Shaanxi Province.The experiment began in 2004.A completely randomized design was used.The results showed that at early spring planting,soil temperatures were 0.1oC lower in the stalk-mulching and no-till treatments compared to the conventional tillage treatment.Soil temperatures were highest under film mulch.There was no significant difference in soil bulk density among the treatments before planting;however there was a significant difference among the treatments after harvest.Soil bulk density in the 0～20 cm layer was 2.3% lower in the no-tillage treatment compared to conventional tillage;however the bulk density in the 20～40 cm layer was 1.8% higher in the no-tillage treatment compared to conventional tillage.Soil water content decreased in the order stalk-mulching>film-mulching>no-till>conventional tillage.Both initial and equilibrium infiltration rate infiltrate rate are higher in conservation tillage than conventional tillage.In summary,the results show that conservation tillage methods improved soil physical properties and therefore could be implemented in the southern part of Mu Us desert.
中文关键词	保护性耕作 ; 土壤物理性质 ; 作物产量 ; 毛乌素沙地
英文关键词	conservation tillage soil physical property crop yield Mu Us Sand Land
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRONOMY
WOS研究方向	Agriculture
CSCD记录号	CSCD:3369188
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/2XILL650/222235
作者单位	西北农林科技大学资源环境学院, 杨凌, 陕西 712100, 中国
推荐引用方式 GB/T 7714	雷金银,吴发启,马璠,等. 毛乌素沙地南缘保护性耕作措施对土壤物理性质的影响[J]. 西北农林科技大学,2008,26(3):161-166.
APA	雷金银,吴发启,马璠,马波,&李荣标.(2008).毛乌素沙地南缘保护性耕作措施对土壤物理性质的影响.,26(3),161-166.
MLA	雷金银,et al."毛乌素沙地南缘保护性耕作措施对土壤物理性质的影响".26.3(2008):161-166.