此时为最佳产量群体结构。
当短的锯木部件可被利用时，白杨可以达到最佳产量。
The yield from aspen timber is best when relatively short components of sawn wood can be utilized.
越南产量的显著增长应归功于所实施的一项恢复和扩展计划，使茶林实现了最佳产量。
A rehabilitation and expansion programme implemented by Viet Nam explains the impressive growth in output as tea bushes reached optimum yields.
并提出了不同降水年型的合理施肥范围，分析了最大和最佳产量的施肥组合及其经济效益。
The rational fertilization areas in different precipitation years were put forward, and analysis on the fertilization plan for the maximum yield and optimum economic effect was made.
并提出了不同降水年型的合理施肥范围，分析了最大和最佳产量的施肥组合及其经济效益。
The rational fertilization areas in different precipitation years were put forward, and analysis on the fertilization plan for the maximum yield and optimum econ...
并提出了不同降水年型的合理施肥范围，分析了最大和最佳产量的施肥组合及其经济效益。
The rational fertilization areas in different precipitation years were put forward, and analysis on the fertilization plan for the maximum yield and optimum economic e...
生姜利用种块繁殖，用种量大，前期投入高，如何合理确定用种量，以获得最佳产量与效益，是当前生姜生产中亟待解决的问题。
Rhizome is the stock part of ginger in production. How to decide the size of seed-rhizome in production is a problem imperatively needed to solve in order to gain the optimal yield and benefit.
在很多国家，短期内提高产量的最佳办法就是使用更多的化肥。
And in many countries, applying more fertilizer is the best way, in the short term, to increase yields.
葡萄长势迅速，产量喜人，因此我们对部分葡萄藤进行修剪，以确保葡萄最佳的香味浓度。
The grapes grew quickly and the vines produced a relatively large crop, with some thinning done to ensure optimum flavor concentration.
该系统的开放式平台使水泥生产商可以使用最佳的过程优化包来增加工厂的生产量和生产力。
The open platform of the system enables cement producers to use the best process optimization packages to increase plant throughput and productivity.
联合国粮农组织决定参与扩大袁隆平的高产量杂交水稻种植面积的工作，该组织认为这是提高世界粮食产量的最佳途径。
The UN FAO has decided to get involved in the work of spreading the coverage of Yuan's high-yield hybrid rice, which it considers the best way to increase the world's grain output.
他说，种植期天气欠佳可能使中国的小麦无法达到最佳品质和单产，但不会造成重大的产量不足。(完)。
The poor growing weather will likely keep China's wheat from reaching its best quality and yield, but not cause a major production shortfall, he said.
经模拟选优，确定了不同目标产量下的最佳施肥方案。
The best application fertilizer scheme were established according from different yield target after simulated select.
高频石英的产量目前尚未达致规模经济效益的最佳水平。
The production volume of high-frequency quartz crystal display was yet to reach a level that reaps most benefit from economies of scale.
本文从动态的观点对甘草中有效成分的积累做了研究，从质量与产量同时兼顾的观点出发确定药材最佳采收期。
This paper has studied the acculation of efficacious component in radix glycyrrhizae from the point of view of dynamic state and determinated the best harvesting time.
从经济学的角度对增产措施的成本和收益进行了分析，给出了实施油井增产措施的最佳时机及措施终点产量的模型。
Based on the analysis of the cost and the income of well stimulation front economic Angle, the best opportunity to implement the well stimulation and an output model of measure end point were given.
尽管不施锌处理和最佳处理的干物重没有显著差异，但锌在田间高产情况下很可能是产量限制因素之一。
Although the difference between the yields in -zn treatment and OPT was not significant, the tendency was clear that Zn might become a yield limiting factor for a high yield production in the field.
采用保持耕作措施，尤其免耕和深松，对于增加土壤蓄水、减少蒸发损失、提高水分有效性、节省能耗以及改善作物产量显示出最佳的效果。
No-till and subsoiling have shown promise in increasing water storage, reducing water loss, enhancing water availability, and saving energy, as well as increasing wheat yield.
研究表明，竖炉产量并非随焙烧带宽度和火口中心线上料层高度的增加而一味增加，焙烧带宽度和火口中心线上料层高度均存在最佳值；
The results show that the output of PSF is not increased monotonously with the increase of roasting zone′s width and preheating-roasting zone′s height.
资源评估不仅仅是预测静止的最佳捕捞努力量和持续产量，而是评估鱼类和渔民对管理决策和其它变化的动态反应。
Stock assessment is not only to forecast the static optimum fishing effort and sustainable yield, but also to assess the reactions of fish and fishermen to management choices and other changes.
供试水稻品种的植株密度对籽粒产量的影响也未达到显著水平，最佳植株密度为每公顷300，000~75，000篼。
The effect of plant density on grain yield was also not significant for rice variety tested, the optimum plant density was about300,000 to375,000 hills per ha .
对黄瓜产量有显著的增产作用，以复配剂A3B2进行处理的效果最佳，增产幅度高达27.04%；
The mixture that was A3B2 mixed compound was the best in all, and increased significantly yield of cucumber by 27.04 percent.
氢氮比是合成氨装置最为关键的参数之一，保持比值始终处于最佳状态是提高合成氨产量的有效措施。
The H-N ratio in the production of synthetic ammonia is one of the most important parameters to increase the product yield which is an efficiency measure to keep the optimal production.
采用群体预测法对产成品的需求预测方法进行了改进，并基于报童模型确定了产成品的最佳生产量。
Groups using projections on the demand for finished goods improved forecasting method, and based on the newsboy model to determine the best finished goods production.
其中一条途径就是利用生物质生产燃料乙醇，经过20多年的探索，最后人们从众多乙醇原料作物中筛选出了生物产量和乙醇产量都高的最佳乙醇原料作物——能源甘蔗。
Based on 20 years exploration, one of the best raw materials -energy cane, which has huge biomass and high production of alcohol, has been selected to produce alcohol as the fuel of the car.
氮磷钾平衡施用才能使葡萄产量最高、品质最佳、效益较好；
Only the balanced supply of N, P and K could make the grape yield, quality and benefit best.
通过频数分析，得出指定产量水平下的最佳综合农艺措施给合方案。
The optimal combinative scheme of composite high-yield agronomic measures for top yield level was showed by the frequency number analysis.
通过对产量模型的优化，确定了该区谷子高产的最佳栽培技术体系。
Through optimization of the grain yield models, the best system of cultivating techniques for high yield millet in the area was defined.
通过对产量模型的优化，确定了该区谷子高产的最佳栽培技术体系。
Through optimization of the grain yield models, the best system of cultivating techniques for high yield millet in the area was defined.
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