【作者】 张发宝； 陈建生； 徐培智； 刘国坚；

【Author】 Zhang Fabao Chen Jiansheng Xu peizhi Liu Guojian(Soil and Fertilizer Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640)

【机构】 广东省农业科学院土壤肥料研究所；

【摘要】 应用土壤养分状况系统研究法对我省26个龙眼园土壤进行中量、微量元素含量测定、土壤养分吸附试验及盆栽诊断试验,并在2个果园进行缺素肥效试验。结果表明,88.5％土壤缺Ca,84.6％土壤缺Mg,57.7％土壤缺S,38.5％土壤缺Zn和Cu,34.6％土壤缺Mo,30.8％土壤缺B和Mn。在施用氮磷钾肥料基础上,根据龙眼园土壤养分状况有针对性补充中量微量元素肥料有明显的增产效果,缺素处理则有不同程度的减产。施用中微肥应有针对性,应了解土壤养分状况,以适宜、安全为原则。更多还原

【Abstract】 A systematic approach technique was used for systematically investigating microsecondary nutrients in 26 soils of Longan orchard in Guangdong Province. The approach of investigation included soil test, ion absorption, screen research and orchard trials to study nutritional constraints of the soils and evaluate the effects of fertilization of micro-secondary nutrients .It has been identified that 88.5% of the 26 soils was deficient in Ca, 84.6% in Mg , 57.7% in S, 38.5% in Zn and Cu, 34.6% in Mo, and 30.8% in B and Mn. The results of orchard trials showed that longan fruit yields were increased and fruit quality were improved with application of all suspected deficient micro-secondary nutrients of the soil , based on proper rates of NPK , However , application of micro-secondary nutrient should be depended on the status of soil nutrient .更多还原