摘要
对比研究了地球化学景观环境、第四系、成土母质和土壤等的地球化学特征与新郑枣品质和产量的关系。研究表明,覆砂的岗丘是优质新郑枣适生的地球化学环境。典型的地质背景、第四系沉积物组构、成土母质和土壤等综合生态地球化学要素影响了新郑枣的品质和产量。区内中上更新统中发育古土壤层,是枣树生产期有益元素聚集的地球化学障和潜藏的有益元素的地球化学库,在某种程度上决定了枣的品质和产量。本区土壤和土体中多种有益营养元素含量偏低,处于缺乏状态。
The correlations between favorable geochemical environment, geochemical characteristics of Quaternary, soil parent materials, imbedded paleo-weathering crust, paleosol layer, and quality and quantity of Xinzheng date in the Xinzheng date area are studied. The results show that sand-covered hill is the optimum geochemical environment for Xinzheng date. Comprehensive eco-geochemical factors, such as typical geological background, compositions of Quaternary sediments, soil parent materials, soil, specific geochemical landscape and favorable micro-area climate, influence the quality and quantity of Xinzheng date. Paleosol layer of Upper Pleistocene is developed in this area, which is the geochemical barrier of accumulation of beneficial elements and buried geochemical reservoir of beneficial elements during the growth period of date tree and determines the quality and quantity of date in some degree. Composition, occurrence and effectiveness of nutrition elements in soil are closely related to the quality and quantity of date. Specific physiognomy and adequate sunshine are favorable for photosynthesis and the growth of date tree. The content of many beneficial nutrition elements in soil is low in this area. Applying trace fertilizer at a proper time can promote the yield and quality of date.
出处
《地球化学》
CAS
CSCD
北大核心
2006年第2期194-200,共7页
Geochimica
基金
国土资源部全国区域化探扫面规划项目
