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当前位置: 首页 > 文章 > 余杭区新垦红壤耕地肥力特征及地力评价 土壤通报 2018 (1) 55-60
Position: Home > Articles > The Quality Evaluation of Newly Reclaimed Red Soils in Yuhang District,Hangzhou Chinese Journal of Soil Science 2018 (1) 55-60

余杭区新垦红壤耕地肥力特征及地力评价

作  者：
沈建国;王忠;李丹;费建华;楼玲;马伟洪
单  位：
杭州市余杭区农业生态与植物保护管理总站;中国土地估价师与土地登记代理人协会;杭州市植保土肥总站
关键词：
新垦耕地;限制因素;质量评价;红壤丘陵;质量提升
摘  要：
提高补充耕地质量是实施区域耕地占补平衡的重要保障。为全面了解杭州市余杭区新垦耕地的质量状况及其针对性地提出新垦耕地的改良措施,本文采用田间调查与采样分析相结合的方法,把区内2012~2014年建成的天目山东麓347.83 hm2新垦红壤耕地划分为72个评价单元,开展了新垦耕地肥力的全面调查,并按照《浙江省耕地质量评定与地力分等定级技术规范》对耕地地力进行了综合评价。结果表明,区内新垦红壤耕地普遍存在"砂"、"酸"、"瘦"和"生"等限制因素,耕层土壤质地为砂土的耕地占比达56.88%,土壤呈强酸性的耕地占比高达86.35%,有机质含量在20 g kg-1以下的耕地占70.43%。总体上,耕地地力在中下水平,多属于二等4级和三等5级。分析认为立地条件较差是导致新垦红壤耕地地力偏低的主要原因。施用碱性改良剂降低土壤酸度和加强以提升有机质为核心的土壤培肥管理是该区新垦红壤耕地质量提升的重要举措。
译  名：
The Quality Evaluation of Newly Reclaimed Red Soils in Yuhang District,Hangzhou
作  者：
SHEN Jian-guo;WANG Zhong;LI Dan;FEI Jian-hua;LOU Ling;MA Wei-hong;Yuhang Agro-ecology and Plant Protection Management Station;Hangzhou Plant Protection and Soilfertilizer Station;China Real Estata Valuers and Agents Association;
关键词：
Newly reclaimed land;;Limiting factor;;Productivity evaluation;;Hilly red soil;;Soil quality improvement
摘  要：
Quality improvement of supplementary cultivated land is the guarantee of regional requisition and compensation balance of cultivated land.In order to fully understand the quality of newly reclaimed land in Yuhang district of Hangzhou city,and then put forward the improvement measures of the newly reclaimed land,a comprehensive survey of soil fertility of the newly reclaimed land was carried out by using field investigation and soil sampling analysis.In this study,the newly reclaimed red soils(347.83 hm2),located on the eastern foot of Tianmu Mountain and reclaimed during the years of 2012-2014,was divided into 72 evaluation units.The quality of the reclaimed land was also comprehensively evaluated according to the technical specifications for quality evaluation of farmland and grading of soil fertility in Zhejiang Province.The result showed that some limited factors of soil fertility,such as sandy,acidic,low organic matter,and low available P and K existed generally in most of the newly cultivated red soils of this area.The reclaimed land with sandy soil texture accounted for 56.88%,and the proportion of the reclaimed land with soil p H less than 5.5 was as high as 86.35%.While the reclaimed land with soil organic matter less than 20 g kg-1 accounted for 70.43%.Quality of the reclaimed land was mainly belonged to low and middle level,and most of them were classified as either the 4 th class of the second grade or 5 th class of the third grade.It was considered that poor site condition was the main cause of low productivity of the newly cultivated land.Application of alkaline modifier to reduce soil acidity and strengthen soil fertility management with increasing organic matter was important measure to improve the quality of the new reclaimed land in this area.

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