| 刘建忠,师江澜,雷金银,高国雄,吴发启.毛乌素沙地南缘不同免耕农田土壤理化性质及玉米产量差异分析[J].干旱地区农业研究,2006,(6):29~34 |
| 毛乌素沙地南缘不同免耕农田土壤理化性质及玉米产量差异分析 |
| Diversity analysis on physica-l chemical properties and yield of corn in the South of Maowusu Sandlot different No-tillage farmland |
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| DOI：10.7606/j.issn.1000-7601.2006.06.07 |
| 中文关键词: 毛乌素沙地 保护耕作 土壤容重 玉米产量 |
| 英文关键词:conservation tillage stubble field no-tillage variance analysis bulk density |
| 基金项目:农业科技成果转化基金项目(03EFN217100323)； 农业部“发展生态农业治理沙漠化土地”项目 |
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| 中文摘要: |
| 毛乌素沙地南缘农田不同耕作措施土壤理化性质和玉米产量差异试验结果表明:与常规种植方式相比,在土壤理化性质方面,免耕处理的表层土壤持肥保水能力降低,土壤表层容重增加,而土壤有机质有所富积,玉米成熟期推迟5~10 d,易受霜冻危害;翻耕+覆膜处理能明显提升玉米生长早期的地温,土壤持水能力好,养分稳定,玉米成熟期提前5d左右。在产量方面,翻耕+覆膜处理比常规种植增产13.74%,而免耕种植仅减产1.66%,免耕种植的经济效益可观。 |
| 英文摘要: |
| Different tillage methods in the South of Maowusu Sandlot farmland was tested,results show:tillage methods affect soil physical-chemical quality and corn yield.contracting tillage method,No-tillage surface soil's,sustaining water and fertilizer ability decreases,bulk density becomes larger and soil organism accumulates,the ripe is about for 5～10 days later,and it's more likely to suffer the frost hurt.In the tillage and cladding method,the soil temperature in early terms can be raised,obviously,the soil's ability of sustaining water and nutrient becomes better.By cross-tillage and cladding method,yield can be increased by 13.74%;but by no-tillage conserve plant,yield will be decreased by 1.66%,then,economic efficiency of no-tillage is to be considerable. |
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