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本研究共用十年时间对上海地区土壤中Zn、Mo、B、Cu、Co、Fe、Mn的含量分布进行了调查及其肥效评价,并利用电子计算机运算结果,对上海地区进行了科学的微量元素应用区划。根据分析结果及微肥实施效果,并运用国际国内目前采用的分级指标,结合作物布局,以行政乡为单位作出了微肥区划应用图。上海市可划分为滨海平原Zn肥显效区;江口沙洲B、Zn肥显效区;中部平原微肥有效区;西部淀泖低地微肥中效区及市郊蔬菜微肥平衡施肥区等五个大区。针对五个区微量元素的含量与分布及其使用特点分别进行了描述,并建立了影响各种微肥肥效的相关因子的数学模式。本文同时对微肥在上海地区不同土壤及不同作物上的使用技术进行了规范说明,并科学地预测了微肥在上海地区的用量及其产生的经济效益。
In this study, the content distribution of Zn, Mo, B, Cu, Co, Fe, Mn in soils of Shanghai area was investigated for 10 years and its fertilizer efficiency was evaluated. Based on the computer operation results, Element Application Zoning. According to the analysis results and the effect of the application of micronutrient fertilizer, and using the current international and domestic grading indicators, combined with the crop layout, the administrative villages as a unit to make a map of fertilizer application. Shanghai can be divided into the coastal plain Zn fertilizer effective area; Jiangkou sandbar B, Zn fertilizer effective area; central plain fertilizer effective area; West Lake lowland fertilizer application efficiency area and the suburban vegetable micronutrient balance fertilizer area . The contents and distribution of trace elements in five districts and the characteristics of their use are described respectively. The mathematical models of the relevant factors that affect the efficiency of various fertilizer are established. In the meantime, the application of micronutrient fertilizer in different soils and different crops in Shanghai was also described in detail, and the dosage of micronutrient fertilizer in Shanghai and its economic benefits were predicted.