| 1. | Effects of simulated acid rain on exchangeable cation transplant and acidifying potential in litchi orchard soils
模拟酸雨对果园土壤交换性阳离子迁移及其对土壤酸化的影响 |
| 2. | Nutrient accumulations and changes of exchangeable cation ions in soils under sunlight greenhouse vegetable cultivation
日光温室栽培对土壤养分累积及交换性养分含量和比例的影响 |
| 3. | Concentrations of exchangeable cations of soil and their seasonal dynamics in three representative forests of dinghushan biosphere reserve
鼎湖山主要森林类型土壤交换性阳离子含量及其季节动态特征 |
| 4. | Soil quality . determination of the potential cation exchange capacity and exchangeable cations using barium chloride solution buffered at ph
土壤质量.用氯化钡ph溶液测定离子交换能力和可交换的离子 |
| 5. | Soil quality - determination of thepotential cation exchange capacity and exchangeable cations using barium chloride solution buffered at ph 8 , 1 iso 13536 : 1995
土质. ph值为8 . 1时利用氯化钡缓冲溶液测定可交换阳离 |
| 6. | Soil quality - chemical methods - determination of the potential cation exchange capacity and exchangeable cations using barium chloride solution buffered at ph 8 . 1
土质.化学方法. ph值为8 . 1时利用氯化钡缓冲溶液对潜在阳离子交换能力和可交换阳离子的测定 |
| 7. | Our aim is to provide reference data for the mechanism of the effects of ree on crops and the safety evaluation of re used in agriculture . 1 . in soil culture experiment , re applications with appropriate dose in dry condition increased the contents of soil available n , whose no - effect value were 505mg / kg at eighth week , whereas higher levels of re had negative effects , re applications with both appropriate and higher dose in inundated condition reduced the contents of soil nh / - n and hydrolysable n . re treatment concentrations showed significant positive correlation with the contents of soil exchangeable re . and significant negative correlation with the contents of soil available p and soil ph value . there was no significant effects of re on soil exchangeable cations , but applications of re increased the contents of soil water soluble cations , especially that of ca2 * and mg2 +
两种培养条件下，稀土处理浓度与土壤交换态稀土含量成正比，与有效磷含量、土壤ph成反比，对土壤交换态盐基离子含量无显著影响，但通过置换作用增加了水溶态离子，尤其是ca ~ ( 2 + ) 、 mg ~ ( 2 + )离子的含量；第二周稀土处理增加交换态zn含量，对交换态fe有降低作用，旱培条件下增加交换态mn含量，淹水条件下对其有降低作用；第八周稀土处理均提高交换态fe 、 mn 、 zn含量，其机制主要与稀土降低土壤ph有关。 |
