| The physical and chemical properties of soil block cloddy in Loess area farmland |
|
View Fulltext View/Add Comment Download reader |
| |
| DOI：10.7606/j.issn.1000-7601.2007.03.23 |
| Key Words: Loess area farmland soil block cloddy |
| Author Name | Affiliation | | WANG Yi | College of Resources and Environment Northwest A＆F University,Yangling,shaanxi 712100,China | | WANG Yi-quan | College of Resources and Environment Northwest A＆F University,Yangling,shaanxi 712100,China | | LIU Jun | College of Resources and Environment Northwest A＆F University,Yangling,shaanxi 712100,China | | ZHANG Xing-chang | College of Resources and Environment Northwest A＆F University,Yangling,shaanxi 712100,China；Institute of Soil and Water Conservation Chinese Academy of Sciences and Ministry of Water Resources,Yangling,Shaanxi 712100,China |
|
| Hits: 721 |
| Download times: 480 |
| Abstract: |
| In Loess area,block cloddy was universal existence in farmland surface.The physical and chemistry properties of block cloddy in plow layer were researched in this study.The results showed that the structure characteristics of block cloddy was with tight surface but loose inner,the bulk density of the crust can be high as 1.39～2.0 g/cm3, which was mainly affect by unreasonable tillage process.The tight surface can not be crushed by nature alternation of drying and wetting.Farming machinery to impact and rotary tillage were necessary when reduce them.Ca2+ can migration from block cloddy inner to surface during the environment evolution,which was deteriorated the block cloddy surface tight.It can verify the environment factor has great effect on the properties of block cloddy and disperse block cloddy after tillage is very important. |
|
|
|