| 南雄紫色土特性及土壤水分特性研究 |
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| 引用本文： | 姜俊红,汪 军,韦歆娜.南雄紫色土特性及土壤水分特性研究[J].中国农学通报,2015,31(2):215-218. |
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| 作者姓名： | 姜俊红 汪 军 韦歆娜 |
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| 作者单位： | (;1.华南农业大学水利与土木工程学院,广州 510640；;2.广东省烟草公司烟叶管理处,广州 510642） |
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| 基金项目： | 基金项目：广东省烟草专卖局（公司）科技项目“紫色砂页岩烟区烤烟灌溉制度及烟水配套工程研究与应用(粤烟科[2011]6号)。 |
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| 摘 要： | 土壤水分特性是制定作物灌溉制度的基础。为了合理制定南雄旱坡地烤烟灌溉制度，解决季节性干旱对该地区烤烟种植的影响，以南雄旱坡地紫色土壤为研究对象，通过野外试验和室内试验，研究了不同轮作方式下不同土层深度的紫色土土壤水分特性曲线。研究结果表明，旱坡地紫色土的饱和含水量30.7%，平均田间持水量25.5%，凋萎系数10.0%；土壤保水性差，占田持30%的土壤水会随着重力的作用流失；有效含水量所占的比例低，接近50%以上的土壤水没有办法被作物利用；不同轮作方式对水分特性曲线稍有影响，土层深度对其影响较大。建议制定灌溉制度时烤烟的计划湿润层深度为40 cm，当地在生产时应注注意经常松土，或增稻杆等增加土壤的保水性。
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| 关 键 词： | 造纸法再造烟叶 造纸法再造烟叶 纤维形态 物理指标 相关性分析 |
| 收稿时间： | 8/4/2014 12:00:00 AM |
| 修稿时间： | 8/4/2014 12:00:00 AM |
Study on the Purple Soil Water Properties in Nanxiong City |
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| Jiang Junhong,Wang Jun and Wei Xinna.Study on the Purple Soil Water Properties in Nanxiong City[J].Chinese Agricultural Science Bulletin,2015,31(2):215-218. |
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| Authors: | Jiang Junhong Wang Jun and Wei Xinna |
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| Institution: | (;1.College of Water Conservancy and Civil Engineering, South China Agricultural University, Guangzhou 510640;2.Guangdong Tobacco Monopoly Administration, Guangzhou 510640) |
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| Abstract: | The soil water characteristics are the basis for developing crop irrigation system. In order to formulate reasonable tobacco irrigation system and reduce the seasonal drought impact, this thesis studies the typical physical properties of purple soil and soil water characteristics in Nanxiong City. Through field and laboratory tests, the authors analyzed the soil moisture characteristics under different rotation type and different depth of purple soil. The results showed that the saturated water content of the purple soil of Nanxiong dry sloping field was 30.7%, the field capacity was 25.5%, wilting co-efficient was 10.0%; the soil’s water retention was poor and effective moisture percentage was low, because 30% of the soil water would loss by the effect of gravity and more than 50% of the soil water could not be used by crops. The results showed that different crop rotation’s effect on moisture characteristic curve was slight, but the influence of soil depth was larger. It was advised that the local departments should pay attention to frequent scarification or add rice straw to increase water retention of the soil in production. |
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| Keywords: | purple soil soil water characteristic curve different tobacco-crops rotation |
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