当前位置: 首页 > 文章 > 上海市农田土壤基础肥力元素演变特征 上海农业学报 2001,17 (3) 38-44
Position: Home > Articles > EVOLUTION FEATURES OF BASIC FERTILITY ELEMENTS IN SHANGHAI FARMLAND SOILS Acta Agriculturae Shanghai 2001,17 (3) 38-44

上海市农田土壤基础肥力元素演变特征

作  者:
茅国芳
单  位:
上海市农业技术推广服务中心
关键词:
土壤;基础肥力;演变特征;土壤普查
摘  要:
在分析了 2 0世纪 80年代前期和 90年代中期上海郊区农田土壤肥力元素循环特点的基础上 ,于 1999年 10月集中采集市郊 10区 (县 )中 6个区 (县 ) 45个乡 (镇 ) 7个主要类型水稻土0~ 2 0cm耕层土样 152份 ,对其中的土壤有机质、全N、全P和全K含量作了分析测定 ,并以其区域性大样本统计分析数据与采样区第二次土壤普查时相对应土类的分析结果进行比较 ,结果表明 ,上海农田土壤基础肥力元素的演变特征表现为 :土壤有机质全面回升 ;全N持续盈余 ;全P基本持平 ;全K亏损缩小
译  名:
EVOLUTION FEATURES OF BASIC FERTILITY ELEMENTS IN SHANGHAI FARMLAND SOILS
作  者:
Mao Guofang (Shanghai Agrotechnology Extension Service Center ,Shanghai 201103)
关键词:
Soil;Basic fertility;Evolution features; General survey of soil
摘  要:
Based on the analyses of circulation features of fertility elements in farmland soils of Shanghai suburbs during the early 1980s and mid 1990s ,152 soil samples of 0~20cm plowgh horizon were collected in October 1999 from seven main types of paddy soil distributed in 45 townships /towns belonging to six of ten Shanghai suburban districts/counties;the contents of soil organic matter,total N,total P,total K were determined;then the statistical analytic data of regional bulk samples collected in 1999 were compared with the analytic results of the second general survey of soil ending in 1986 concerning the correspondent types of soil. The results show the evolution features of basic fertility elements in Shanghai farmland soils are as below:organic matter contents rise again all around; total N contents sustain surplus; total P contents remain basically balanced and total K contents display reduced deficit.

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