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研究了有机质和ＣａＣＯ３。对发育于花岗岩和第四纪红色粘土母质上的红壤的交换性铝的影响。结果表明，在用Ｈ２Ｏ２去除土壤中的有机质后，交换性铝的含量随有机质的降低而降低，但降低的速度不均匀，由慢到快似有一个“突跃”。而在向土壤中添加有机质的研究结果则表明，交换性铝的含量随有机质的增加而增加；在增加的过程中由快到慢，达到极点后，有机质含量再增加，交换性铝反而下降。在相同的土壤环境中，由于作物品种不同，施用等量的ＣａＣＯ３（或石灰粉）对土壤交换性铝的含量及作物产量的影响不同，而且差异显著。
Organic matter and CaCO3 were studied. Effect of exchangeable aluminum on red soil developed on granite and Quaternary red clay parent material. The results showed that after H2O2 was used to remove organic matter in the soil, the content of exchangeable aluminum decreased with the decrease of organic matter, but the rate of decrease was not uniform and there was a “sudden jump” from slow to fast. However, the results of adding organic matter to soils show that the content of exchangeable aluminum increased with the increase of organic matter, and the content of exchangeable aluminum increased from fast to slow in the process of increasing. In the same soil environment, the application of the same amount of CaCO3 (or lime powder) had different effects on the soil exchangeable aluminum content and crop yield due to the different crop varieties, and the difference was significant.