| 摘要: |
| 采用小四轮拖拉机在冬小麦种床上压地１遍，小麦播种后测定土壤的体积密度，含水率及温度，并与种床未经碾压的处理进行比较，结果表明：压实对２０ｃｍ内耕层土壤的物理特性有一定的影响。尽管这种影响可以通过耦作来消除，但播前压实却会对作物的出苗或生长带来危害。 |
| 关键词: 拖拉机 土壤压实 土壤物理特性 小四轮拖拉机 |
| DOI： |
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| 基金项目: |
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| Effects on Soil Physical Porperties and Crop Growth by Small Wheeled Tractor CompactionBefore Winter Wheat Sowing |
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| Abstract: |
| The soil bulk density, moisture content and soil temperature are measured afterthe compaction of small wheeled tractor operated on the seed bed before winter wheat sowingand compared with the ones in unpressed zones. The result shows that the bulk density in 20cm of soil depth and the temperature in 0~30 cm depth considerably influenced by the traf-fic. These effects can be removed by tillage while the compaction is harmful to crop emer-gence and growth. |
| Key words: small-type tractor,soil compaction,soil physical porperties, |
