| 赵洪利,李军,贾志宽,王学春,王蕾.不同耕作方式对黄土高原旱地麦田土壤物理性状的影响[J].干旱地区农业研究,2009,27(3):17~21 |
| 不同耕作方式对黄土高原旱地麦田土壤物理性状的影响 |
| Effect of different tillages on soil physical properties of dryland wheat field in the Loess Plateau |
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| DOI：10.7606/j.issn.1000-7601.2009.03.04 |
| 中文关键词: 耕作 土壤容重 土壤硬度 团聚体 土壤蓄水量 入渗速率 冬小麦 黄土高原 |
| 英文关键词:cultivation soil bulk density soil hardness soil macro-aggregates soil water storage capacity infiltration |
| 基金项目:国家科技支撑计划项目(2006BAD29B03)； 国家自然科学基金(30771280) |
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| 中文摘要: |
| 通过冬小麦田间试验,研究了免耕、深松、翻耕三种不同耕作措施对土壤物理特性的影响。结果表明:冬小麦收获时,免耕与其它处理相比,增大了土壤容重、土壤硬度,其土壤干筛法>0.25 mm团聚体含量比深松和翻耕每层平均增加3%和5%,但较冬小麦耕作处理前每层平均下降5%;免耕条件下,湿筛法>0.25 mm团聚体含量比深松和翻耕每层平均增加11%和32%,较冬小麦耕作处理前每层平均下降42%;免耕可增加土壤蓄水量,收获期土壤蓄水量为373.1 mm,较深松和翻耕提高17%和8%;随着降水量的增加,冬小麦收获期水分入渗速率逐渐减少;且不同耕作方式水分入渗速率为免耕>深松>翻耕。 |
| 英文摘要: |
| Experiment was conducted to study the effect of different tillage measures on soil physical porperties of winter wheat field.The results showed that, in no-tillage treatment, soil bulk density and soil hardness, increased;soil macro-aggregates dry sieving content increased by 3% and 5% over sub-soiling and deep plowing, but decreased by 5% compared with winter wheat soil preparatio;soil macro-aggregates wet sieving content increased by 11% and 32% over sub-soiling and deep flowing, but decreased by 42% compared with winter wheat soil preparation.At the harvest time, no-tillage could inhibit soil water evaporation, and soil water storage capacity was 373.1 mm, increasing by 17% and 8% over sub-soiling and deep plowing;with the increase of precipitation, the rate of water infiltration gradually reduced, and water infiltration rate of different tillage methods was in the order of no-tillage>sub-soiling >deep plowing. |
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