杉木檫树根际土壤磷素研究  

Studies on Soil Phosphorus of Rhizos- phere under chinese Fir and Chinese Sassafras.

作　　者：姜培坤[1] 徐秋芳[1] 钱新标[1] 张春桃[1] 

机构地区：[1]浙江林学院,桐乡县农林局

出　　处：《浙江林学院学报》1995年第3期242-246,共5页Journal of Zhejiang Forestry College

基　　金：国家自然科学基金

摘　　要：檫树根际土壤的全磷、有机磷和有效磷含量明显高于杉木根际土。两种林木根际土的无机磷总量无显著差异，但无机磷的组成有很大不同，表现在杉木根际土闭蓄态磷比例很高（占无机磷的６１．４８％），而檫树根际土明显低（仅占３９．６９％）。檫树根际土Ｆｅ－Ｐ，Ｃａ－Ｐ的含量显著高于杉木根际土。杉木、檫树根际土中的有效磷都和Ａｌ－Ｐ，Ｃａ－Ｐ显著相关，Ａｌ－Ｐ的含量都偏低，特别是杉木根际土。There is higher content of total-P,organic-P and availabe-Pinthe rhizosphere soil of Chinese sassafras than that of Chinese fir.Betweenthe rhizosphere soils of the two kinds trees,there is no significant differencein mount of mineral phosphorus but is significant difference in its constitu-ent,which can be explained by much more content of occluded-P(acountedto 61.48%of mineral phosphorus)in Chinese fir rhizosphere soil than that(acounted to 39. 69%)in Chinese sassafras,and by much more content of Fe-Pand Ca-P in Chinese sassafas rhizosphere soil than that in Chinese fir.Intwo rhizosphere soils, the quantity of available-P is largely correlatedwith contents of Al-P and Ca-P,while there is lower content of Al-P.

关 键 词：杉木 檫树 根际 土壤磷素 

分 类 号：S714.8[农业科学—林学]