2) wind-sandy land
风沙化土地
1.
Origin of wind-sandy land and control pattern in Yongding River Basin in Beijing;
北京市永定河流域风沙化土地成因及治理模式
3) solidified aeolian sandy soil
固化风沙土
1.
Some studies on the shear strength as well as its affecting factors of solidified aeolian sandy soil are made in this paper.
对固化风沙土的抗剪强度及其影响因素进行试验研究。
4) soil physical and chemical properties
土壤理化性质
1.
Comparison of soil physical and chemical properties among various Phyllostachys pubescens plantation;
不同毛竹林林地土壤理化性质特征比较
2.
Influences of straw mulching treatment on soil physical and chemical properties and crop yields;
秸秆覆盖还田对土壤理化性质及作物产量的影响
3.
Spatial heterogeneity of soil physical and chemical properties in Xishuangbanna tropical botanical garden
西双版纳热带植物园园区土壤理化性质的空间异质性
5) soil physicochemical properties
土壤理化性质
1.
Effects of biological soil crust on soil physicochemical properties in water-wind erosion crisscross region,northern Shaanxi Province,China;
陕北水蚀风蚀交错区两种生物结皮对土壤理化性质的影响
2.
Applying the method of field fixed position experiments, this article studied the effect of different tillage methods and modes of getting straw and stalk back to the field on the crop yields and soil physicochemical properties.
应用定位田间试验的方法,研究了不同耕作方式和秸秆还田方式对作物产量和土壤理化性质的影响。
3.
To investigate the effect of various level of close-to-nature cultivated forests on the soil physicochemical properties, a close-to-nature gradient was established with 20-year-old larch (Larix olgensis), ash (Fraxinus mandshurica) monoculture and mixture plantation forests and a 50-year-old secondary forest.
水曲柳人工纯林,水落混交林以及与之相邻的天然林构成近自然化培育梯度,研究不同林分各土层(0～10cm,10～20cm)土壤理化性质的差异。
6) Soil physical and chemical property
土壤理化性质
1.
The paper studied the change of straw decomposition, soil physical and chemical property, soil nutrient and crop yields under straw mulching.
通过在川中丘陵区简阳市进行的秸秆覆盖还田试验，研究了秸秆还田后秸秆腐解过程及养分释放规律和对土壤理化性质和作物产量的影响，结果表明： (1)秸秆含有丰富的养分，秸秆还田后腐解速度由快至慢，秸秆养分变化呈现消长。
补充资料：风沙土
| 风沙土 aeolian sandy soil 发育于风成沙性母质的土壤。主要特征是土壤矿质部分几乎全由细砂颗粒组成，剖面层次分化不明显，风蚀严重，土壤处于幼年阶段。主要分布于干旱少雨、昼夜温差大和多沙暴的地区，包括世界各大洲的沙漠、草原和半荒漠草原地带。中国主要分布在北纬36°～49°之间的干旱和半干旱地区。风沙土的形成过程与流动沙性母质上自然植被的出现、繁衍和演变紧密相关，当由流动性沙性母质构成的沙丘上出现稀疏的植物时，风沙土的成土过程即告开始。风沙土质地粗，细砂粒占土壤矿质部分重量的80％～90％以上，土壤表层多为干沙层，有机质含量低，有盐分和碳酸钙的积聚。根据植被生长疏密和沙性母质流动性大小可分为3个亚类：①流动风沙土。成土过程微弱，风蚀严重，植物难定居。②半固定风沙土，随流动风沙土着生植物的增多，覆盖增大，风蚀作用和缓，土壤表面变紧实并出现薄层结皮，流动性变小，而呈半固定状态。土壤有机质有所增加。③固定风沙土，除有沙生植物外，还掺入一些地带性植物种，地表结皮增厚，沙面更紧实，剖面分化明显，有团块状结构出现，抗风能力增强，土壤理化性质变化明显。改良风沙土要制止风沙土流动，主要措施是：保护自然植被，建立人工绿色带，覆盖风沙土表面，增施有机肥、种植豆科绿肥，利用化学固沙材料增加风沙土颗粒的固结能力、以减缓风沙土的流动性，有水利条件的可引水拉砂、阻砂、灌淤。改变面貌的关键是发展灌溉业。 |
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条