搜索结果: 1-9 共查到“农学总论 aggregate stability”相关记录9条 . 查询时间(0.046 秒)
Changes in pore size distribution and aggregate stability of two soils under long term tillage systems
tillage systems bulk density pore size distribution aggregate stability
2008/11/26
Tillage-induced changes in pore-size distribution and aggregate stability of two soils were investigated for 7 con- secutive years from 1994 to 2000. The three tillage treatments were used: convention...
Characterisation of soil aggregate stability by ultrasonic dispersion
ultrasonic dispersion soil aggregate stability soil particle dispersion
2008/11/24
Ultrasonic soil aggregate stability (USAS) of 5 European soils was investigated in ultrasonic dispersion tests, studying mass fractions of macroaggregates at different absorbed specific energy levels....
Some factors affecting clay dispersion and aggregate stability in selected soils of Nigeria
aggregate stability aggregated clay chemical extractants tropics water-dispersible clay
2008/11/24
Using 22 soil samples from Nigeria, comprising Alfisols, Entisols, Inceptisols, Ultisols and Vertisols with 77- 676 g kg-1 clay, we studied the effect of various treatments on clay dispersion. Aggrega...
Effect of management practices on soil organic matter, microbial biomass and aggregate stability of Orthic Luvisol
management practice organic matter microbial biomass aggregation
2008/11/21
Because of the importance of soil organic matter (SOM) and wet aggregate stability (WAS) on soil quality, the maintenance of satisfactory levels of these parameters is an integral component of soil m...
Effects of herbicides, lucerne meal, and zinc on microbial activity and aggregate stability of soils
aggregate stability microbial activity herbicides zinc lucerne meal
2008/11/21
In laboratory experiments aggregates (1-2 mm) of a loamy colluvial soil and a silty luvisol soil were treated with the herbicides Gramoxone and Goltix WG, the active agent of Goltix WG Metamitron, luc...
Effects of herbicides, lucerne meal, and zinc on microbial activity and aggregate stability of soils
aggregate stability microbial activity herbicides zinc lucerne meal
2008/11/21
In laboratory experiments aggregates (1-2 mm) of a loamy colluvial soil and a silty luvisol soil were treated with the herbicides Gramoxone and Goltix WG, the active agent of Goltix WG Metamitron, luc...
Influence of long-term liming on aggregate stability of a loess-derived soil
liming aggregate stability settlement loessial soil surface sealing
2008/11/18
Results of a long-term field trial on a silt loam soil near Freising (Upper Bavaria) show that evaluating the meliorative effect of liming on soil structural properties depends on the initial homogene...
Influence of the microbiological activity on the soil aggregate stability
microbiological activity soil aggregate stability
2008/11/18
The influence of the microbiological activity on the soil aggregate stability of a silty Chernozem was investigated by promoting the microbial activity through D-glucose solution. After 2 weeks of inc...
Statistical models for predicting aggregate stability from intrinsic soil components
aggregate stability soil properties statistical models
2008/11/11
The objective of this study was to evaluate the nature of the relationship between the water-stability of soil aggregates and some physical, chemical and mineralogical properties of surface (0-20 cm) ...