| 1. | Effects of soil erosion on the soil properties in slope cropland of northern shaanxi 陕北坡耕地土壤侵蚀对土壤性质的影响研究 |
| 2. | Effects of sulfur - coating left from using scu on cole growth and soil chemical properties 控释尿素硫膜对土壤性质和油菜生长的影响 |
| 3. | Spatial variability of soil characteristics on woodland and infiltration processes for different vegetation types 林地土壤性质空间变异性与土壤入渗过程的研究 |
| 4. | Soil properties and forest growth in chinese fir forest soils different in preceding vegetation in lishui of zhejiang province 浙江省丽水不同前茬杉木林土壤性质与林木生长 |
| 5. | But most of soil properties are not entirely independent ; some even have spatial correlation in some extension 实际上,许多土壤性质在空间上并不是完全独立的,而在一定的范围内存在空间相关性。 |
| 6. | Moreover , some effective measures for decreasing the occurrence of pest and disease on street afforestation trees are put forward in terms of the improvement of soil properties 从改善街路土壤性质入手,提出了相应的减少街路绿化树木病虫害发生的有效措施。 |
| 7. | Therefore , recent study on relationship of n2o emission and soil properties has became the focus in the study of soil environment chemistry branch field in the global warming research 因此,研究n _ 2o排放与土壤性质之间的关系已成为当前土壤环境化学领域的热点问题。 |
| 8. | Soil was the most source of atmospheric n2o . the strength of soil n2o discharge flux and changes of the total n2o amount present in the atmosphere correlated well with the changes of soil properties 土壤是n _ 2o主要的发生源,土壤中n _ 2o排放通量的强度和大气中n _ 2o总量的变化与土壤性质的改变密切相关。 |
| 9. | The mechanism of controlling soil erosion without tillage outside and inside our country , its effects on soil characteristics and the direction of its application in out country are introduced in this paper 摘要综述了国内外免耕控制土壤侵蚀的机理研究以及对土壤性质的影响,并提出免耕在我国的应用方向。 |
| 10. | 2 vibration : while vibration levels obviously diminish in proportion to distance , they are also significantly affected by soil type and the structural characteristics of support columns ( 2 )振动部分:捷运列车所造成之地表振动传播,其随距离地衰减的趋势是很明显,而衰减之程度则随著土壤性质的不同及高架路轨梁柱之特性,而产生不同衰减变化模式。 |