覆盖提高了杨树叶片养分浓度。
Mulching heightened the nutrient concentrations of poplar leaves.
二次降雨过程中径流养分浓度存在显著差异。
However, during the second rainfall, there was notable discrepancy for chemical concentration in runoff from the different conditions.
随生育进程，单套作棉各器官中养分浓度逐渐下降。
With reproductive process, the nutrients concentration of the organ in both cotton intercropping and cotton alone gradually decline.
本文用实测资料分析了温度对麦田土壤溶液养分浓度的影响。
Study was conducted to undersdand the effects of temperature on the nutrient concentrations in soil solution.
对鄂南5县（市）毛竹林33样点的叶片养分浓度进行了分析。
The nutrition status of bamboo leaves from 33 samples taken from 5 counties in the south of Hubei Province was analyzed.
顺坡种植油菜-花生处理，坡面流失泥沙钾、磷养分浓度高于休闲裸坡处理。
Nutrient concentration of soil loss under covered with vegetation over the fallow.
通过营养诊断的方法确定了三树种容器苗(一年生)的适宜养分浓度和DRIS诊断标准。
Reasonable nutrition concentration and the parameter of DRIS in these three seedlings (one year) are determined through the method of nutrition diagnosis.
结果表明，合理施用化肥不但增产幅度大，还在一定程度上增加了小麦N、P、K养分浓度。
Results showed that rational use of chemical fertilizer not only increased wheat yield, but also increased N, P and K content in wheat to some extent.
径流中养分浓度水溶性磷、钾离子和溴离子在开始产流几分钟内，径流浓度很高，随后迅速衰减。
Water-soluble nutrient concentrations in runoff of phosphorus, potassium and bromine ions in the beginning minutes of runoff, runoff in high concentrations, followed by rapid decay.
为材料，在室内砂培条件下研究了不同养分浓度及氮形态对烟株的生长、养分的吸收和分配，以及钾循环等的影响。
Pot experiment was carried out to study the effect of different nutrient levels and nitrogen forms on the growth, nutrient uptake, partitioning, and potassium flow within flue-cured tobacco plants.
采用控制环境生长室研究了2个密度水平下CO2浓度升高对红桦幼苗干物质分配与营养的影响，并分析了红桦干物质分配与养分浓度的关系。
The effects of elevated CO2 concentration on dry matter allocation and nutrient contents of red birch seedlings were studied under two planting densities in controlled environment Chambers.
随着全球大气CO_2浓度的日益升高，水稻单产将会发生一定变化，其生长发育、产量形成以及养分的吸收利用也会发生相应的变化。
With the global atmospheric CO_2 concentrations of the growing increase, rice yields will be certain changes in its growth, yield and nutrient absorption and utilization will be corresponding changes.
采用溶液培养方法，研究了不同硼浓度下烤烟干物质积累动态和养分吸收动态变化特点。
A solution culture experiment was conducted to study the dynamics of dry matter accumulation and n, p, K absorption by flue-cured tobacco under different boron concentration.
灰渣场地物理性质不良、养分不平衡而贫瘠和重金属浓度过高是限制植物定居的主要因素。
It was related to the propagula resource in the surroundings of the cinder yard. The poor physical properties, unbalanced soil fertility or infertility and e…
灰渣场地物理性质不良、养分不平衡而贫瘠和重金属浓度过高是限制植物定居的主要因素。
It was related to the propagula resource in the surroundings of the cinder yard. The poor physical properties, unbalanced soil fertility or infertility and e…
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