主要的限制因子是对云的了解。
旱地农业生产的首要限制因子是水分。
Moisture is the primary limitation factor for production of dry farming.
它是脯氨酸合成的限制因子。
干旱是作物生产的一个主要限制因子。
光照强度是甜瓜反季节生产的主要限制因子。
Light intensity is a major limiting factor for cold season production of melon.
在干旱地区水分是影响植物生长的限制因子。
Water is the main restricting factor that influences the growth of plants in arid area.
光照强度是甜瓜反季节生产的主要限制因子。
The light intensity is the main limitative factor of greenhouse production in muskmelon.
植物病害一直是农业生产的主要限制因子之一。
Plant diseases is one of the main restrict factors for agricultural production.
铝是酸性土壤中植物生长发育的主要限制因子。
Aluminum is the main factor limiting plant growth on acid soil.
N是第一限制因子。
在氮供应不足的条件下，氮素是蔬菜产量的限制因子。
When the nitrogen supply was not enough, it was main limiting factor of vegetable yield.
水分是黄土高原半干旱区林草植被建设的主要限制因子。
Water is the primary limiting factor for forest and grass vegetation construction in semi-acid soils of the Loess Plateau area.
低温和低光照强度均可成为人参叶片光合速率的限制因子。
Low temperature and low light intensity were limited factors for photosynthetic rate in leaves of Panax ginseng.
铝毒是酸性土壤上限制植物生长的最重要的限制因子之一。
Aluminum (Al) is one of the most important factors limiting plant growth in acid soils.
试验结果表明，土壤缺钾是该试验的主要养分限制因子之一；
The potash deficiency in soil is proved the restricting factor in this experiment.
在油菜生产中，病虫害的发生是油菜高产稳产的限制因子之一。
The prevalence of disease and insect pest is one of the factors, which restrict the yield in rape production.
海河低平原类型区，水资源不足是农作物产量的主要限制因子。
In Haihe Lowland Plain, water shortage is the main limit factor for agriculture production.
土壤水分条件的恶化是影响春小麦生长和蒸发蒸腾的主要限制因子。
Soil water deficit is the main limiting factor affecting the growth and evapotranspiration of spring wheat.
密植对土壤养分环境的压力，造成多因子、多梯度的养分限制因子；
The high density planting affecting soil nutrinent environment causes nutrinent limitation from many factors and many stairs.
磷元素是陆地植物生长和生态系统净初级生产力的主要限制因子之一。
Phosphorus (p) is one of the main limiting nutrients to the plant growth and net primary productivity (NPP) in terrestrial ecosystem.
磷是陆地生态系统重要的生命元素之一，也是农作物生长的主要限制因子。
Phosphorus is one of the important elements of land ecosystem, and is also the limit factor of plants.
相关遗传力通径分析显示细度是现代品种产量和品质同时改良的限制因子。
The path analysis indicates that fineness is a limiting factor to simultaneous improvement of yield and fiber quality traits in current cultivars.
相关遗传力通径分析显示细度是现代品种产量和品质同时改良的限制因子。
There are positive correlations of different degrees between yield and fiber quality characters in current cotton cultivars except for fineness.
探讨了集约化猪场废水厌氧消化后，SBR法生物脱氮除磷效果及限制因子。
The biological removal effect of nitrogen and phosphorus and limiting factor of SBR technique after anaerobic digestion of centralized swine wastewater were investigated and studied.
采用土壤养分状况系统研究法。在摸清土壤养分限制因子前提下，平衡施肥。
By using soil nutrient state system study method, balancing soil fertilization have been adopted after the soil nutrient limitation factors had been made clear.
在海洋中，铁与硝酸盐、磷酸盐和硅酸盐都可能成为浮游植物的生长限制因子。
Phosphate, silicate, iron or nitrate can be limiting factor in the process of phytoplankton growing.
根据理论模型计算了纵模限制因子、阈值增益、光增益、输出功率等特征参数。
We calculated longitudinal confinement factor, threshold gain, optical gain and output power etc through theoretical model.
本文通过多点栽培试验表明，影响新银合欢生长的限制因子是温度和土壤肥力。
Its cultural experiments at many plots have shown that the temperature and the fertility of soil are limiting-factors for its growth.
不施肥或施肥不足，则成为影响红富士幼树生长、发育和早实性的主要限制因子。
Abiotrophy resulted from soil fertility inadequacy was a main limiting factor for the growth and development of apple trees in this region.
分布北界的限制因子，在内陆为冬季绝对低温过低，在海滨为夏季活动积温不足。
The limited factors of the north-distribution are colder absolute minumum temperature in winter in inland and not enough active accumulated temperature in seashore.
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