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MULTI-TEMPORAL CROP SURFACE MODELS COMBINED WITH THE RGB VEGETATION INDEX FROM UAV-BASED IMAGES FOR FORAGE MONITORING IN GRASSLAND
Precision Agriculture Grassland UAV Crop Surface Model Structure from Motion RGBVI
2016/7/5
Remote sensing of crop biomass is important in regard to precision agriculture, which aims to improve nutrient use efficiency and to develop better stress and disease management. In this study, multi-...
Savanna covers about two-thirds of Africa, with forage quantity and quality being important factors
determining the distribution and density of wildlife and domestic stock. Testing hypotheses related...
Regional Distribution of Soil Phosphorus Across Congregation-Grazing Zones of Forage-Based Pastures with Cow-Calf Operations in Florida
Beef Cattle Congregation Structures Congregation Zone Grazing Zone Total Phosphorus Phosphorus Saturation Nutrient Management
2013/3/12
The arrangement of supplemental feed, water, shelter, and their concurrent interactions with topographic features may influence the distribution of animals and their simultaneous use of pasture’s reso...
为了提高太阳能干燥的利用效率，研究了牧草低温干燥特性。通过干燥试验台进行苜蓿低温干燥过程的试验及其分析，找出了苜蓿干燥过程中含水率、质量、表面温度随干燥时间的变化规律，试验结果表明：在表面温度升温干燥第1阶段含水率下降最快，达到0.43%/min，当表面温度趋于平稳时含水率下降速度逐渐趋缓，第2阶段降到0.116%/min，第3阶段为0.039%/min。
收割期牧草底部茎秆生物力学性能试验（Experiment on Biomechanical Properties of Bottom Stems of Forage in Harvesting Period）
牧草茎秆 抗拉强度 化学成分 显微结构
2010/5/5
以北方典型多年生豆科牧草紫花苜蓿、小冠花和禾本科扁穗冰草、无芒雀麦收获期底部茎秆为研究对象，在500N微机控制电子万能试验机上试验研究了主要力学性能，并测定了茎秆在不同状态下纤维素、木质素、蛋白质等主要化学成分含量，观测了茎秆的微观组织结构,得到了茎秆扫描电镜下的解剖构造图像。研究结果表明：4种牧草收割期底部茎秆应力σ与应变ε曲线服从虎克定律，禾本科扁穗冰草茎秆抗拉强度高而弹性小；豆科小冠花茎秆抗...
基于Pro/E软件，将锯齿双圆盘切割器、强制输送喂入装置和刀盘式揉搓切碎器有机地组合，建立了4QR型青贮揉搓饲料收获机的虚拟装配模型，并根据实际装配尺寸研制出试验样机。在室内台架试验的基础上，分析了刀盘式揉搓切碎器的结构参数及运动参数对切碎性能的影响，确定了合理的工作参数。经性能测试与生产试验证明，4QR型青贮饲料收获机符合设计要求，切碎青贮饲料质量好，生产效率高。 Based on the re...
Dynamic laboratory measurement with dielectric sensor for forage mass flow determination
precision agriculture yield mapping capacitance sensor mass flow grass and forage
2014/2/27
A new parallel plate capacitance sensor was built consisting of two metal sheets. The sensor – a capacitor and the whole oscillating circuit was driven at 27 MHz frequency. Dynamic laboratory experime...