farmlands相关论文
Distribution of Soil Enzyme Activities and Microbial Biomass Along a Latitudinal Gradient in Farmlan
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
河北省中南部82个农田表土花粉组合研究表明:农田花粉组合不仅有农作物花粉类型,也有临近山区的植物成分。山区农田乔木花粉含量与......
In this paper, the history, current status, and research approaches to nitrogen pollution were reviewed using systems an......
文章首先构建了产业转型期招远市农用地利用效率评价指标体系,然后建立招远市转型期农用地利用效率评价模型并评价招远市转型期农......
在对我国若干典型区域调研及资料分析的基础上，作出了当前我国耕地重金属“主产区基本安全，重点区域风险较大”的基本判断，提出了针对......
采用对比分析方法对农用地分等中产量比确定中存在的问题进行研究,研究结果显示:提出分层设置基准作物,在国家层面确定小麦、玉米......
泰山区域山水林田湖生态保护修复工程已纳入第二批山水林田湖草生态保护修复工程试点,项目工程虽然取得了一定成效,但仍存在着规划......
Distribution of Soil Enzyme Activities and Microbial Biomass Along a Latitudinal Gradient in Farmlan
Soil enzymes activities and microbial biomass have an important influence on nutrient cycling. The spatial distribution ......
通过对山东寿光表层农业土壤(0~20cm)铜和锌的调查研究,了解不同农业利用方式下土壤铜和锌含量的差异,揭示其空间分布规律及其累积......
在这篇论文，历史，当前的地位，和研究，氮污染的途径用系统分析和扣除被考察。世界范围的 N 污染的严重被加亮，建议被成为状况到地址。一......
54个晋冀低山丘陵区人工和人工扰动植被表土花粉样品分析表明：花粉组合以草本植物花粉（74．5％）为主，乔木花粉含量低于20％。人类活动较强的......
农田鼠类和鼩类动物随季节、作物布局和环境而不同,其栖息地也随之发生变化.研究表明,农田鼠类有向院落集中,向粮食地集中分布的特......
Coffee (Coffea canephora) is the principal cash crop and the country’s largest agricultural foreign revenue earner in U......
pH, exchangeable Ca2+ and Mg2+ of soil can influence the yield and quality of flue-cured tobacco. Xuancheng city is the ......
Thoughts and Practice of Ecological Protection and Restoration of Mountains, Rivers, Forests, Farmla
The report of the 19th National Congress of the Communist Party of China stated that it was necessary to establish and p......
随着“生态福建”理念的推进,全省范围内加大生态文明建设力度,山水林田湖草生态保护修复应势而生。以尤溪闽湖和将乐常上湖为研究......
