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以耕型第四纪红土红壤、耕型花岗岩红壤、耕型板页岩红壤和耕型石灰岩红壤4种不同母质发育的耕型红壤为研究对象,通过室内加磷(50 mg/L)培养试验,研究了加磷培养前后供试土壤各粒级土壤颗粒中磷的含量变化状况。结果表明:加磷培养前,耕型第四纪红土红壤和耕型花岗岩红壤的磷素主要分布在<0.02 mm的土壤颗粒中,而耕型板页岩红壤和耕型石灰岩红壤的磷素主要分布在2～0.02 mm的土壤颗粒中;加磷培养后,除耕型花岗岩红壤各粒级土壤颗粒中磷含量增幅较小外,耕型第四纪红土红壤吸附的磷主要分布在2～0.02 mm的土壤颗粒中,而耕型板页岩红壤和耕型石灰岩红壤吸附的磷均分布在<0.002 mm和0.2～0.02 mm的土壤颗粒中。
The cultivated red soil cultivated in four different parent materials of plow type Quaternary lateritic red soil, tillage granite red soil, tillage plank shale red soil and tillage limestone red soil was used as the research object. Through indoor cultivation of phosphorus (50 mg / L) , We studied the changes of phosphorus content in soil particles before and after phosphorus addition. The results showed that before phosphorus addition, the phosphorus in plow type Quaternary laterite red soil and tillage granite red soil were mainly distributed in the soil particles <0.02 mm, whereas the phosphorus in tillage shale red soil and tillage limestone red soil was mainly Distributed in 2 ~ 0.02 mm of soil particles; Phosphorus cultivation, the tillage-type granite red soil in each particle size of soil particle size increased less phosphorus, plow type Quaternary red soil adsorbed phosphorus mainly distributed in the 2 to 0.02 mm. However, phosphorus adsorbed by tillage plank red soil and tillage limestone red soil were distributed in soil particles <0.002 mm and 0.2-0.02 mm.