主要的限制因子是对云的了解。
干旱是作物生产的一个主要限制因子。
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.
干旱是制约小麦生产高产稳产的主要限制因子。
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.
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.
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.
干旱和缺水是中国西北黄土高原农业旱作粮食生产区的主要限制因子。
Drought and water shortage is the main limiting factor on the arid-area of agricultural production in the Northwest Loess Plateau.
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.
小麦是世界上第一大粮食作物，而干旱缺水是影响小麦产量的最主要限制因子。
Wheat is a staple crop in the majority of countries; however its yield has been limited dramatically by drought.
在白令海水域磷酸盐浓度普遍较高，它不可能成为浮游植物光合作用限制因子。
The concentration of phosphate was generally high and it was not possible to be a limiting-factor for the phytoplankton growth in the Bering Sea.
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.
对东湖水库主要营养盐限制因子、水化因子、浮游生物、初级生产力进行了研究。
The main limited factors of nutritive salt, water-chemistry factors, plankton and primary productivity in Donghu reservoir were studied.
由土壤养分平衡方程和最小限制因子定律，讨论了因时因地制定施肥策略的必要性。
Based on the balance equation of soil nutrient and the law of the minimum limiting factor, some general principles are proposed for making fertilizer application tactics.
利用土壤养分状况系统研究法，对江西宜春油茶幼林土壤进行了养分限制因子的研究。
According as the systematic approach for soil nutrient status, the nutrients limiting factors of the young oil-tea soil in Yichun of Jiangxi were studied.
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