交换性铝

几种低分子量有机酸淋溶对土壤pH和交换性铝的影响

Effects of leaching with low molecular weight organic acids on soil pH and exchangeable aluminum

成土母质和种植制度对土壤pH和交换性铝的影响

PH and the exchangeable aluminum content in acid soils as affected by parent materials and cropping systems

土壤pH升高到6.0以上、交换性铝含量降至1.0me/100克土以下，芝麻才能获得较高的产量。

To obtain higher yield of sesame , exchangeable Al should be reduced to less then 1.0me/ 100g and soil pH should be raised to greater then 6.0 .

供给茶树NH4~+-N时，茶树根际土壤（距根表1mm）的交换性铝显著增加。

Exchangeable Al in rhizosphere ( 1 mm from the root surface ) increased significantly when NH4 + - N was supplied .

红壤中交换性铝调控条件的研究Ⅱ.有机质和CaCO3对交换性铝的影响

Study on the Control Conditions for Exchangeable Aluminum in Red Soils : II . Effect of Organic Matter and CaCO_3 on the Exchangeable Aluminum in Red Soils

茶园土壤交换性铝含量随施氮量的提高而增加；

The content of exchangeable Al increased with the amount of applied nitrogen as urea .

结果表明，红壤酸化程度与土壤表面交换性铝呈正相关关系。

The results show that the amount of exchangeable Al is directly proportional to the extent of acidification .

根际土壤的水溶性铝、交换性铝、交换性铝饱和度和吸附羟基态铝的含量显著高于非根际土。

The contents of soil solution Al , exchangeable Al and absorbed hydroxy Al were much higher in the rhizosphere soil than those in the bulk soil .

当土壤酸化时，铝会从土壤固相释放，进入土壤溶液或以交换性铝的形式吸附于土壤表面的阳离子交换位上，使土壤铝的活性增加，土壤中可溶性铝含量增大。

At low pH values , the toxic species of aluminum will be released from the solid phase into the soil solution or exchangeable aluminum adsorbed on the surface of the soil cation exchange sites .

施用有机肥料，明显降低土壤交换性氢铝含量，增加土壤养分，保持作物的稳产和高产。

Applying organic chemical fertilizer decreased significantly exchangeable Al in soil , increased soil nutrients content , and kept the high and stable yield of crops .

红壤长期施用单一化学肥料，土壤明显酸化，土壤交换性氢铝显著增加，作物生长变差，产量降低。

The soil became acid obviously , the exchangeable Al in soil increased significantly , crop grew poorly and the yield decreased after applying sole chemical fertilizer for long term .

紫色十经过施肥淋溶后，土壤中交换性氢和铝均随着交换酸总量的增加而增加。

After fertilization and leaching , the amount of exchangeable hydrogen and exchangeable aluminium all increased with the increasing of Exchange acid amount .

用台湾相思更新木麻黄防护林使土壤pH值呈上升趋势，这与台湾相思林分土壤中水解性总酸度、交换性总酸度和交换性铝含量降低有关；

PH value showed the trend of declination in soil of Acacia confusa plantation compared with the first and second generation of Casuarina protection forest , and it was related to the declination of hydrolytic acidity , exchangeable alkalini , and exchangeable aluminum ;

结果表明：海南岛五指山土壤交换性酸主要由交换性铝构成，土壤交换性氢含量不高。

The result showed that the soil exchangeable acid was mainly constituted by exchangeable aluminum .

当外源镧浓度大于300mg/kg时，土壤盐基饱和度与有效阳离子交换量显著降低，而交换性酸和交换性铝显著增加。

When the concentration of exogenous La 3 + was higher than 300 mg / kg , base saturation percentage ( BSP ) and effective cations exchange capacity ( ECEC ) decreased significantly , exchangeable acidity and exchangeable aluminum , however , increased significantly compared with the control .

结果表明，随模拟酸雨pH值下降，土壤pH值和盐基饱和度明显降低，而交换性酸度明显增加，污染土壤中交换性氢含量比未污染土壤高，而交换性铝含量比未污染土壤低。

The results showed a decrease of pH and base saturation , and increase content of exchangeable acidity in both uncontaminated and contaminated red soil and yellow red soil within the pH decreasing of simulated acid rain , significantly .