Preliminary Research on Regional Material Flow Analysis： A Case Study of Chengyang District in Qingdao

The method ＂Material Flow Analysis （MFA）＂ is one of the effective tools to study law and quantification of material flow between economic system and ecological system. On the national level, economy-wide material flow analysis has been published for a number of countries. However, published studies on the regional or local level are still very limited and a standardized method does not exist yet. On the basis of framework of Material Flow Analysis proposed by Eurostat, the paper collected related data and analyzed material input and output for the Chengyang district in Qingdao. The results showed that DMI （Direct Material Input） and TMR （Total Material Requirement） in absolute number increased about 3.6 and 3.9 times, respectively from 1995 to 2004. Fossil fuel and mineral contributed to about 50.3%-76.3% of DMI. Imports of material increased about 5.0 times and became the most important Contributor to DMI, which showed that local economic growth was highly dependent on resources from other regions and countries. DPO （Domestic Processed Output） and TDO （Total Domestic Output） represent slow increasing trend, and DPO contributed to 22.2%-58.1% of TDO, suggesting local hidden flows were of obvious effect on TDO. The biggest component of DPO is CO2, approximately accounting for 90% of DPO. The material productivity increased 57.7% in last decade, reflecting improvement of efficiency of resources utilization in some extent. However, compared to developed countries and regions, material productivity of Chengyang district was relatively low. Therefore, in order to promote the sustainability, it is essential to develop circular economy and enhance materials productivity.     

试述肥料贮存及施用中存在问题及解决办法

本文对怒江州当前农村在肥料的贮存及施用中存在的问题进行总结,并提出相应的对策。     

水稻需肥规律及合理施肥技术

<正>水稻测土配方技术以土壤测试和肥料田间试验为基础,根据土壤供肥性能,水稻需肥规律,肥料利用率,结合当地生产水平等因素,综合分析,以土定产,以产定肥,因缺补缺,在合理施用有机肥的基础上,提出氮、磷、钾及中微量元素等肥料的施用数量,施用时期和施用方法。其核心是调节和解决水稻需肥与土壤供肥之间的矛盾,有针对性地补充水稻所需的营养元素。实现各种养分的平衡供应,满足水稻生长的需要。     

国外研究池塘施肥育种概况

渔业生物学证明：鱼池施肥能加快被鱼类摄食的各种浮游生物的生长。许多试验表明，池塘中，饵料的丰欠和组成可通过施用有机肥料和无机肥料加以控制。在这种动态循环中，起主要作用的是氮、磷、钾等元素。     

立陶宛森林生产力研究(一)

立陶宛森林生长量测定、森林监测、森林生产力及其动态模型、森林利用研究的理论与新途径。     

天然赤松林种群结构特点的研究

本文运用动态竞争可比性林木分级法，对天然赤松林进行了立木分级。通过立木级归纳认为，东宁现有天然赤松林种群划分为三类，且有从A型种群经B型种群阶段向C型种群发展的趋势。还对各类型种群的特点、发展趋势及经营方向进行了深入的讨论，并分析了各立木级组成对天然赤松种群生产力的影响。     

复合菌肥在多种蔬菜作物上应用初报

肥力高复合菌肥是一种微生物肥料,为了探讨其在不同作物上的使用效果,我们选择在网纹甜瓜、西瓜、大豆、甜椒上进行应用试验,现将试验总结、应用初报如下:     

罗非鱼的饲养

一、无机和有机肥料饲养罗非鱼 罗非鱼大都属于杂食性鱼类，摄食浮游生物和碎屑，征稀养的情况下，天然饵料基本能满足它们营养的要求。在增加池塘放养密度的条件下，增施无机肥料或有机肥料来增加天然饵料的生产量，是池塘高产的有效措施。