查询词典 loess plateau

With the aid of Licor-6400 portable photosynthesis system, the physiological indexes and relate denvironmental factors were measured and influence of environmental factors on photosynthetic physiologic indexes and leaf water use efficiency of winter wheat was studied on dryland of Loess Plateau. The results howed that diurnal fluctuation of physiological rate of leaf was a not obvious two-hump curve and that oftranspiration rate was a typical resupinate "U".

采用Li-6400便携式光合测定系统在模拟光照条件下，通过对冬小麦叶片生理指标及其相应环境因子的测定，研究了小麦的生理指标和叶片水分利用效率的动态变化规律及其对环境因子的响应。

Influence of environmental factors on photosynthetic physiologic indexes and water use efficiency of winter wheat leaves was studied in semi-arid rain feed agriculture region in Loess Plateau. Diurnal fluctuation of physiological rate of leaf was a not obvious two-hump curve and diurnal fluctuation of transpiration rate was a typical resupinate "U" and the Pn and Tr in a.m.

通过对黄土旱塬冬小麦叶片光合生理指标、水分利用效率及其对环境因子的响应进行分析，结果表明：净光合速率日变化呈不明显的双峰曲线，蒸腾速率日变化呈明显的倒"U"型曲线，两者上午都明显高于下午，且不同生育期峰值出现的时间不同。

The deterioration of soil quality and the decline in productivity on sloping land are the main factors that limit the revegetation of the Loess Plateau. However, these two factors largely depend on soil nutrient status.

：坡地土壤质量退化以及生产力下降是限制坡地植被恢复的主要因素，而坡地土壤质量和生产力在很大程度上取决于土壤养分状况。

Through adopting the integration of scale-down an d scale-up or SCS paradigms, the relationship between landscape pattern and s oil nutrient flux in Chinese loess plateau was evaluated.

采用SCS范式，评价了黄土高原地区景观格局与土壤养分流动的关系。

Soil was found to be a slight carbon sink during recovery processes in the agro -pastoral area of the northern Loess Plateau with SOCD, being （2.11 kgCm-2） in scrubland 〉（1.95 kgCm-2） in secondary m-2 ） in artificial grassland 〉（ 1.69 kgCm-2 ） in abandoned farmland and 〉（1.68 kgCm-2） in farmland.

以黄土高原北部水蚀风蚀交错带地区不同生长年限的紫花苜蓿人工草地及其退化后形成的次生草地为主要研究对象，探讨了SOCD的动态变化特征。

During the glacial maximum, Mu Us Desert extended southeasterly to the loess plateau, but when the last climatic optimum occured, the desert retreated more than 5 latitudes northwards.

末次冰期极盛时，毛乌素沙漠的分布范围扩大，向东南一直延伸到黄土高原地区，全新世气候适宜期时，沙漠缩小，相对于末次盛冰期而言，在空间上向北退缩了5个纬度左右。

Stochastic dynamic water balance model ; numerical model ; loess plateau

随机动力学水平衡模型；数值模型；黄土高原

The validity of the modified stochastic dynamic water balance model is verified by long term experimental data of winter wheat field in loess plateau.

本文用黄土高原长武农业生态试验站的冬小麦长期定位试验资料对改进的随机动力学水平衡模型进行了准确性检验。

Stochastic dynamic water balance model ; water cycling ; loess plateau

随机动力学水平衡模型；水量转化；黄土高原

The output of soil nitrogen and phosphor is associated with grain seeds,which is removed from crop field forever.Therefore,stubble retention combined with nitrogen and phosphor fertilizer supply can replenish the soil nutrient pool in the loess plateau.

耕层0-30cm速效氮和速效磷均有所增加，但速效磷以NTS增长幅度最大，而速效氮却以NTS增长幅度最小；耕层0-30cm速效钾表现为下降趋势，但以TS和NTS减幅较小。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。