搜索结果: 1-15 共查到“农学 R/B ratio”相关记录61条 . 查询时间(0.594 秒)
Stomatal opening ratio mediates trait coordinating network adaptation to environmental gradients
Siberian elm (Ulmus pumila) covariation eurybiont guard cells maximum theoretical stomatal conductance (gsmax) stomatal water availability
2023/11/28
A trait coordination network is constructed through intercorrelations of functional traits, which reflect trait-based adaptive strategies. However, little is known about how these networks change acro...
Assessment of root-shoot ratio biomass and carbon storage of Quercus brantii Lindl. in the central Zagros forests of Iran
carbon sequestration crown diameter component Persian oak growth form
2018/3/6
Assessment of carbon storage build-up in tree stems is a difficult task due to the lack of information on their carbon
sequestration potential and allocation in different components. Similarly, high ...
Effect of inoculum to substrate ratio on biogas production of sheep paunch manure
volatile solids biogas production rate biogas accumulation modified Gompertz first order kinetic simulation
2016/4/5
Sheep paunch manure was anaerobically digested to study the effect of inoculum to substrate ratio on biogas production
rates and accumulation. Inoculum to substrate ratios of 1.37, 2.05 and 4.1 were...
Offspring sex ratio in domestic goats: Trivers-Willard out of natural selection
maternal age parental investment sex allocation
2015/7/7
In the present
study we have analyzed an extensive data set on the secondary sex ratio (SSR) including 59 335 goat kids born
in 30 633 litters to 11 644 mothers on farms all over the Czech Republi...
Estimation of the optimal ratio of standardized ileal digestible tryptophan to lysine for finishing barrows fed low protein diets supplemented with crystalline amino acids
tryptophan requirement pig performance
2015/7/3
Optimum standardized ileal digestible (SID) tryptophan (Trp) to lysine (Lys) ratio was estimated for 67–96 kg barrows fed low protein diets supplemented with crystalline amino acids (AA). One hundred ...
Analyses of genetic relationships between linear type traits, fat-to-protein ratio, milk production traits, and somatic cell count in first-parity Czech Holstein cows
Holstein cattle genetic parameters milk yield somatic cell score
2015/7/2
Genetic and phenotypic correlations between production traits, selected linear type traits, and somatic cell score were estimated. The results could be useful for breeding programs involving Czech Hol...
Effects of Forage:Concentrate Ratio on Growth Performance, Ruminal Fermentation and Blood Metabolites in Housing-feeding Yaks
Concentrate Ratio Growth Performance Ruminal Fermentation Yak
2016/5/19
The objective of this study was to determine the effect of forage: concentrate ratio (F:C) on growth performance, ruminal fermentation and blood metabolites of housing-feeding yaks. Thirty-two Maiwa m...
Effect of the Ratio of Non-fibrous Carbohydrates to Neutral Detergent Fiber and Protein Structure on Intake, Digestibility, Rumen Fermentation, and Nitrogen Metabolism in Lambs
Neutral Detergent Fibre Undegraded Dietary Protein Metabolisable N Lambs
2016/5/19
This study aimed to investigate the effect of the ratio of non-fibrous carbohydrates to neutral detergent fibre (NFC/NDF) and undegraded dietary protein (UDP) on rumen fermentation and nitrogen metabo...
Analysis of standing timber sales based on overall coniferous/broadleaved tree species ratio
open tender invited competition SQL
2015/5/18
The first competitive open tender called “Standing timber sale” was executed in 2010. The aim of the
paper was to conduct complete collection of data from online tender catalogues and to analyze the...
Ca/Al ratio in Norway spruce fine roots on monitoring plots in the Czech Republic
aluminium toxicity forest health soil acidification
2015/5/5
This article is focused on the evaluation of the Al/Ca ratio in fine roots of Norway spruce on the plots
belonging to the ICP Forests monitoring programme in the Czech Republic.
Effects of Bai zhu san (Atractylodis macrocephalae) decoction on cellular immunity and Th1/Th2 cytokine ratio in a Mifepristone-induced murine abortion model
Bai zhu san mifepristone cytokine anti-abortive CD4+, CD8+T cells
2015/4/17
Chinese herbal medicine has been used as an anti-abortive treatment in farm animals for thousands of years. To investigate the anti-abortive functions and mechanisms of Bai zhu san (BZS) on mifepristo...
Assessing sediment enrichment ratio in Mai-Negus catchment, northern Ethiopia
degradation erosion-status sites landform
2015/3/10
Soil degradation is a threat to sustainable development in Ethiopia. However, degradation indicators, such as sediment enrichment ratio (SER), are not adequately documented in literature. This study a...
Analysis of standing timber sales based on overall coniferous/broadleaved tree species ratio
open tender invited competition SQL database data mining
2015/5/6
The first competitive open tender called “Standing timber sale” was executed in 2010. The aim of the paper was to conduct complete collection of data from online tender catalogues and to analyze the d...
The root-plant ratio changes in the first growing periods of wild cherry (Prunus avium L.) plantations
regeneration root system growth performance of young plantation
2015/3/6
The root-plant ratio is one of the important parameters for planting stock quality. We suppose that the ratio is one of the driving variables for the growth performance of new plantation in the forest...
Stand heterogeneity of total carbon and nitrogen, and C/N ratio in soil of mountain meadows
carbon nitrogen C/N ratio mountain meadow
2015/1/30
This study was aimed at monitoring the relative and absolute stand heterogeneity of total carbon, total nitrogen and C/N ratio in Ah-Ae-Btg-Bt horizons of Gleyic Luvisol on one mountain meadow divided...