摘要
以黑龙江省三江平原典型农场为例,采集了534份0~20cm表层农田耕层土壤样品,进行土壤pH、有机质、碱解氮、有效磷和速效钾等5个土壤养分指标的测定,采用主成分分析法对土壤养分指标进行综合评价与分析,得出土壤有机质和碱解氮是影响研究区土壤肥力最重要的因素,通过土壤养分主成分综合得分线性方程,计算不同质地土壤养分综合分值。这一研究为黑龙江农田土壤质量管理、施肥和土壤改良决策提供了科学依据。
Taking the typical farms in the Sanjiang Plain, Heilongjiang Province as an example, 534 soil samples of 0-20 cm surface farmland were collected for five soil nutrient indicators such as soil pH, organic matter, alkali-hydrolysis nitrogen, available phosphorus and available potassium. The principal component analysis method was used to comprehensively evaluate and analyze the soil nutrient indicators. It was concluded that soil organic matter and alkali-hydrolysis nitrogen were the most important influencing factors affecting the soil fertility in the study area. The comprehensive scores of soil nutrients in different textures were calculated by using the linear regression equation for the main components of soil nutrients. This study provides scientific basis for Heilongjiang farmland soil quality management, fertilization and soil improvement decision-making.
作者
袁泉
唐颖
赵鸿云
许惠
杨兴凤
赵美美
张志
YUAN Quan;TANG Ying;ZHAO Hong-yun(School of Agricultural Resource and Environment, Heilongjiang University, Harbin,Heilongjiang 150080)
出处
《安徽农业科学》
CAS
2019年第13期65-67,共3页
Journal of Anhui Agricultural Sciences
基金
黑龙江省教育厅科学技术研究项目(12511410)
关键词
农场
土壤养分
主成分分析
综合评价
Farm
Soil nutrient
Principal component analysis
Comprehensive evaluation
