Zhang Ding-Hua, Lin Kai-Miao, Li Bao-Fu
Cultivation Base of Ministry of Science and Technology Key Laboratory of Humid Subtropical Mountain Ecology, Fuzhou 350007, China.
Ying Yong Sheng Tai Xue Bao. 2011 Nov;22(11):2815-21.
In 2007-2010, a comparative study was conducted on the phosphorus characteristics in the rhizosphere soil of Cunninghamia lanceolata, Pinus massoniana and C. lanceolata-P. massoniana mixed plantations in a forest farm in Nanping City of Fujian Province, East China. In the rhizosphere soil of pure C. lanceolata and P. massoniana plantations, the content of available P was higher than that in non-rhizosphere soil. As compared with non-rhizosphere soil, the rhizophere soil in the three plantations had lower pH and O-P content but higher Al-P and Fe-P contents, and its P adsorption capacity was lower while the P desorption rate and desorbed P were in adverse. In the rhizophere soil of pure P. massoniana plantation, the contents of available P, Fe-P, and Al-P, their desorption rates, and desorption capacity were higher, but the O-P content and the adsorbed P were lower, as compared with those in the rhizophere soil of pure C. lanceolata plantation. In the mixed plantation, the P activation in rhizophere soil was further improved, being more obvious under C. lanceolata, which suggested that mixed plantation of C. lanceolata and P. massoniana could promote the phosphorus nutrition of C. lanceolata.
2007年至2010年，在中国东部福建省南平市某林场对杉木、马尾松以及杉木 - 马尾松混交林根际土壤中的磷素特征进行了一项比较研究。在纯杉木林和纯马尾松林的根际土壤中，有效磷含量高于非根际土壤。与非根际土壤相比，这三种人工林的根际土壤pH值和O-P含量较低，但Al-P和Fe-P含量较高，其磷吸附能力较低，而磷解吸率和解吸磷量则相反。与纯杉木林根际土壤相比，纯马尾松林根际土壤中有效磷、Fe-P和Al-P的含量、它们的解吸率和解吸能力较高，但O-P含量和吸附磷较低。在混交林中，根际土壤中的磷活化作用进一步增强，在杉木林下更为明显，这表明杉木与马尾松混交林可促进杉木的磷营养。
