水分供应

一年中，林段蒸腾（E）在光照和水热条件较好的7月最高，9～12月，由于土壤水分供应的减少致使E值降低，E对D的敏感性下降。

The highest stand transpiration ( E ) occurred in July when the radiation and hydrothermal condition were favorable , whereas the reduced water supply in soil during the time period of September-November resulted in lower E value and its sensitivity to D.

辽宁省农田土壤水分供应系数研究

Study of farmland soil water supply coefficient in Liaoning province

研究还表明，限制我国自然植被NPP的主要原因在于水分供应不足。

The limitation factor of NPP is the shortage of water .

土壤水分供应充足的晴天，苹果幼树叶片水分亏缺影响净光合效率（PN）。

Leaf water deficits influents net photosynthesis efficiency ( PN ) of the apple leaves on a sunny day when there is enough water in soil .

作物水分供应订正函数的韦伯函数型

A water supply function in form of Weibull distribution

水分供应与稻米品质及产量性状关系的研究

Study on the Relation to Water Supplying and Character of Rice Quality and Yield

区域农业水分供应脆弱性分析及定量损失评估

Frangibility analysis of water supply in regional agriculture and assessment of its quantitative loss

它固定细粒土壤，保存水分供应给其他植物。

It holds fine soil together , whilst retaining moisture that supports other plants .

宁夏干旱、半干旱地区苏丹草需水规律及其水分供应状况的分析

Water required pattern and supply condition for sudangrass in Ningxia arid & semiarid area

水分供应对春小麦农艺性状和生理指标的影响

The effect of water supplies on agronomic characters and physiologic indexes of spring wheat

叶片蒸腾速率日变化随土壤水分供应增加而增加，随氮肥供应增加而下降；

Respective effects of soil water and nitrogen supply on transpiration rate were stimulative and suppressive .

另外表明，水分供应不足，叶片的羧化效率和表观量子产额下降。

In short supply of water , leaf carboxylation efficiency and apparent quantum yield were cut down .

不同水分供应及氮素形态对旱作水稻铁素营养特征的影响

Effect of Different Water Managements and Nitrogen Forms on Characteristics of Iron Nutrition of Rice Cultivated Under Aerobic Condition

结果表明：在磷和水分供应充足的情况下，两个基因型大豆生理活性表现极强；

The results indicated that physiological activities were greatly enhanced by sufficient phosphorus and water supply for two soybean genotypes .

充足光照、水分供应条件下，成熟转基因烟草植株的光合与蒸腾速率均明显高于野生型。

Moreover , the transgenic plant had significantly higher photosynthesis and transpiration rates than the wild plant under favorable conditions .

并根据水分供应曲线，用聚类分析法将黑龙江省分为不同类型的干湿区。

And dry and wet regions were separated by use of cluster analysis based on the water variation for Heilongjiang province .

在不同环境养分水分供应条件下，不同水肥管理模式下谷子生育期的养分吸收过程呈相似规律。

With the different water supply and environmental nutrients conditions , the relative absorption ratios in different growth stages were similar .

采用正交试验设计，设置烟苗素质，基肥施用深度，始期肥料溶液和水分供应4个因素；每因素各2水平。

There were four factors-seedling quality , initial dressing depth , starter solution and water supply and two levels of each factor .

干旱半干旱地区公路绿化时，幼树成活期间的水分供应很难满足，因而造成植树成活率低，见效慢。

In arid and semi-arid area , the low survivor ratio and the effect of afforestation were common in afforesting the highway .

干旱的环境条件和较为充足的水分供应是耗水量大的一个重要原因。

It is considered that the extremely arid environment and the relative enough water supply are the main factors resulting in high water consumption .

在黄土高原旱作农业区，水分供应不足和肥力低下严重影响了当地农业生产的发展。

In dryland farming region of the Loess Plateau , the drought and low soil fertility has limited the development of local agricultural production seriously .

而在光照和水分供应充足的条件下，榉树的苗木高、地径平均生长量是庇荫、水分供应相对少的2.8倍。

The height and basal diameter growth with sufficient light and water supply was 2.8 times of seedlings under shady conditions and with insufficient water .

枝条生长量与生长期水分供应有关，充足的水分供应，可保树势健旺。

The branch growth amount is related with the supplied water in growth period , and the sufficient water can make the trees strong and vigorous .

通过对模型的计算分析，明确了影响本县粮食生产的各耕作土壤中存在的限制因子的位序，土填养分供应状况水分供应光温条件。

The order of limiting factors influencing the grain production in cultivated lands was : supplying state of soil nutrition , precipitation , light and temperature conditions .

但是，当雨季过去，没有充足水分供应时，湖底不停的泄水，最终就导致了整个湖的“消失”。

This continues through spring as the snow fromthe surrounding mountains melts . But once the steady flow of water stops , the constant drainage causes thelake to " disappear . "

当上部土层水分供应不足时，小麦的自我调节功能可导致根系扩大其吸水范围，向下部土层生长。

The scope of winter wheat root water uptake was adjusted by itself to the lower soil layer where soil moisture was appropriate when soil water supply in the upper soil layer was deficient .

以1980～2002年间18个代表站点常规气象资料与土壤湿度观测资料为基础，运用数理统计方法建立了辽宁省5个区域的农田土壤水分供应系数的动态变化模型。

Based on the routine weather data and the constant observational data of soil moisture for 18 representative stations during 1980 ~ 2002 , the farmland soil water supply dynamic model of five regions in Liaoning province was established with mathematical and statistical method .

施用分蘖肥或改善土壤通透性，能显著增加谷壳的长度和宽度，过多施用穗肥或减数分裂期光照不良、水分供应不足均使谷壳长度变短、宽度变窄。

Comparison with no treatment ( CK ), employing tiller promoting fertilizer or sand-adding treatment would redound to hull length and width , while employing excessive spike fertilizer or shading and water stress treatments during hull formation stage would result in obvious decrement of hull length and width .

模拟玉米螟危害雄花节打孔试验表明，即使玉米植株能得到充足的水分供应，雄花内部的水分胁迫是影响花粉正常散出的主要因素之一。

The result of simulating European corn borer 's damage ( digging a hole in the nodes of tassels ) indicated even if the maize plants could get enough water supply , water stress inside the tassels was one of the main factors affected the pollen grains to shed normally .

大气CO2浓度是影响气孔参数变化的主要因素，同时温度、水分的供应和光照条件等其它环境因素也影响气孔参数。

CO_2 concentration is not the sole factor determining stomatal parameters , and stomatal parameters are also affected by various environmental factors , such as temperature , water , and irradiance .