| 不同灌溉方式下林地土壤水分物理性质的初探 |
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| 引用本文： | 李蕊.不同灌溉方式下林地土壤水分物理性质的初探[J].北方园艺,2010(17):16-20. |
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| 作者姓名： | 李蕊 |
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| 作者单位： | 白银市水电勘测设计院,甘肃,白银,730900 |
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| 摘 要： | 对兰州市北山不同灌溉方式下人工林地50cm土壤深度以内的土壤容重、孔隙度、持水量等指标做测定,探讨不同灌溉方式下林地土壤水分物理性质。结果表明:在喷灌地中土壤容重比无水灌溉地和大水漫灌均有所降低;土壤总孔隙度、毛管孔隙度比无水灌溉和大水漫灌均有所增加,非毛管孔隙度由于一些未知的原因没有呈现出预期的结果;土壤饱和持水量、毛管持水量、田间持水量均比无水灌溉和大水漫灌有所增加。喷灌能在一定条件下降低土壤容重,改善土壤孔隙状况,提高土壤的持水能力,从而改善了土壤水分的物理性质。而大水漫灌不但不能改善土壤水分的物理性质,还导致水的利用率降低。因此在林地灌溉中应首选喷灌方式。
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| 关 键 词： | 兰州北山 灌溉方式 土壤容重 孔隙度 持水量 |
Preliminary Study on Different Irrigation Methods in Woodland of the Physical Properties of Soil Moisture |
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| LI Rui.Preliminary Study on Different Irrigation Methods in Woodland of the Physical Properties of Soil Moisture[J].Northern Horticulture,2010(17):16-20. |
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| Authors: | LI Rui |
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| Institution: | LI Rui (Baiyin Survey and Design Institute of Water Resource and Hydropower,Baiyin,Gansu 730900) |
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| Abstract: | Conclusions was drawn out through measurement of bulk density,porosity and water-holding capacity within 50 cm under the different irrigations for woodland land soil at north-mountain of Lanzhou.The results showed trat the soil bulk density decreased in sprinkle irrigated soil than that of non-irrigated and flood irrigated soil,but capillary porosity and total porosity of soil increased,accordingly soil saturated moisture capacity,capillary moisture capacity,and field moisture capacity was also increased,ho... |
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| Keywords: | north-mountain in Lanzhou irrigation methods soil bulk density soil porosity soil moisture capacity |
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