摘要
本文通过对陕西省54个县(市、区)10种土壤营养物质和小麦产量进行相关和多元逐步回归分析研究,总结出小麦产量和土壤营养物质的关系,建立了由碱解氮、速效磷、速效钾、硼、锌构成的土壤营养物质和小麦产量的最优回归模型,揭示了在目前生产水平下,陕北黄土高原沟壑与丘陵沟壑区,土壤肥力还具有增产潜力;关中地区土壤肥力目前在不同程度上已得到发挥。并对土壤营养物质进行了模糊聚类分析,为土壤评价、小麦生产营养诊断提供了可靠信息。
Through gradual regression analysis to ten kinds nutritions of soils of 54 counties, Saanxi province, the optimum regression model for soil nutritions (including alkaline—N, quick action P; quicick ackaction K, B and Zn) has been set up. It shows that soil fertility is the limit factor of wheat production in Guanzhong plain, but this is not ase in North Shaanxi loess plateau gully hill region. Finally, correlation analysis and fuzzy cluster on soil nutriments have been done.From above mentioned, we can get a lot of information about wheat production,soil assessment and nutrition diagnosis.
出处
《水土保持通报》
CSCD
北大核心
1990年第2期58-64,F003,共8页
Bulletin of Soil and Water Conservation
