期刊论文

中文

湖南农业大学学报(自然科学版)

1007-1032

2004

30

2

110-114

10.3321/j.issn:1007-1032.2004.02.005

(02SSY3033):湖南省科技厅科研项目 (2.]20):湖南省农业厅科研项目

本校为第一机构

为探明长沙市郊蔬菜基地菜园土磷素状况及土壤供磷水平，采用野外取样调查和室内分析相结合，对两种主要母质发育的菜园土耕作层和剖面分层样品进行了研究．结果表明，I)长沙市郊几个蔬菜基地土壤全磷和有效磷含量均较高，全磷含量O．7，8~2．72 g／kg，平均1．72g/kg，有效磷12．82-286．7 mg/kg，平均156．7 mg/kg；2)土壤磷以无机磷形态为主，其变动范围为584．％2 607．5 m g／kg，平均l 495．7 Ing／kg，占全磷量的74．96％-95．86％，均显著高于其他农业土壤和自然土壤，是菜园土的一大显著肥力特征；3)土壤无机磷组成因成土母质不同而不同，第四纪红土母质发育的菜园土O-P含量最高，其次...

To ascertain phosphate status of vegetable soils in the suburbs of Changsha, the mixed soils of plough layer and profile soils were studied by investigation and analysis.The results are as follows,1) The contents of total P and available P in vegetable soils were much higher than the agricultural sails and natural soils.Total P varied from 0.78 to 2.72 g/kg and its average was 1.72 g/kg.The available P varied from 12.82 to 286.7 mg/kg and its average was 156.7 mg/kg.2) The main phosphate fraction was inorganic P in vegetable soils, and up to 74...