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Carbohydrate and nitrogen reserves in two cultivars of Japanese plum grown under organic and conventional management
Prunus salicina organic farming reserves defoliation tree vigor
2018/3/6
Nitrogen and carbohydrate (soluble sugars and starch) reserves were analysed in twig samples of ‘Red Beaut’ and
‘Showtime’ Japanese plum (Prunus salicina Lindl.) cultivars cultivated in two similar e...
Losses of soluble forms of organic carbon in relation to different agro-technical treatment of meadows
dissolved organic carbon meadow experiment mineral soil total organic carbon
2016/8/2
Studies were performed to determine the loss of soluble forms of organic carbon in differently used meadows on mineral soil. In a long-term experiment two variants were distinguished: a productive mea...
基于EMD的土壤有机质含量近红外光谱检测（Near-infrared Spectrum Detection of Soil Organic Matter Content Based on Empirical Mode Decomposition）
土壤有机质 检测 经验模态分解 近红外光谱
2010/12/29
以检测土壤有机质含量为例，探讨经验模态分解在土壤近红外光谱检测中的应用，提出了应用的原理和步骤。用处理后的光谱计算了土壤中的有机质含量，并与九点平滑和小波变换方法的处理结果进行了对比分析。结果表明：与传统的九点平滑处理结果相比，SNR从3 dB左右提高到10 dB左右，原始信号与消噪信号之间的标准差由2.972降到0.901；预测集的决定系数r2由0.9410提高到0.9803, 预测均方根...
鸡粪工厂化堆肥过程中有机质含量预测模型（Prediction Model for Organic Matter Content in Chicken Manure during Plant-field Composting）
鸡粪 工厂化堆肥 有机质
2010/1/28
以148份肉鸡粪和菊花渣工厂化高温堆肥过程样品为研究对象，分别探讨了基于基本理化指标和近红外光谱预测鸡粪堆肥过程中有机质含量的可行性。根据样品中干物质含量、pH值和电导率3种理化指标与有机质含量的相关关系建立了基于理化指标预测有机质含量的一元和二元线性回归模型。结果表明，利用干物质含量预测有机质含量简便、易行且最具实际应用价值（R2=0.81, P<0.001）。采用多元线性回归、主成分回归和偏最...
基于支持向量机的有机肥总养分含量NIRS分析（Near-infrared Reflectance Spectroscopy for Total Nutrient Analysis in Organic Fertilizer Using Linear Support Vector Machine）
有机肥 养分 支持向量机 偏最小二乘 近红外漫反射光谱
2010/2/26
以我国22个省市的120份畜禽粪便为原料的有机肥产品样品为研究对象，利用近红外漫反射光谱法与支持向量机相结合建立了有机肥产品中总养分含量的快速测定模型，并与偏最小二乘法所建模型作了比较。利用偏最小二乘回归法所建立的基于原始样品和干燥粉碎样品的总养分含量近红外模型验证决定系数R2v、预测标准差SEP和验证相对分析误差RPD分别为0.96、7.95g/kg、2.47和0.93、8.02g/kg、3.5...
Economic evaluation of cattle management in the system of organic farming
organic agriculture economical evaluation of cattle management development of organic agriculture support of organic agriculture
2014/3/29
This paper introduces partial results of the research project QC 1140 aimed at the efficiency of enterprises operating in the system of organic farming, especially considering the use of grassland lin...
Economic efficiency of agricultural enterprises in the system of organic farming
organic agriculture development of organic agriculture support of organic agriculture
2014/3/29
The aim of this presentation is to introduce partial results of this research project aimed to the efficiency of businesses working with the organic systems. The proposal of mesures will be formed wit...
Economic efficiency of agricultural enterprises in the system of organic farming
organic agriculture development of organic agriculture support of organic agriculture
2014/3/29
The aim of this presentation is to introduce partial results of this research project aimed to the efficiency of businesses working with the organic systems. The proposal of mesures will be formed wit...