土壤相对湿度

有限水分胁迫对小麦生长状况的影响及合理灌溉的土壤相对湿度指标

Effects of limited water stress on wheat growth and the relative soil moisture index of rational irrigation

本研究利用MODIS数据，分析植被水与同期降水、土壤相对湿度之间的关系，结合中国气象局灾情报告，对利用植被水做干旱监测的可能性做出了初步探讨，并对监测结果的精度进行评价。

Using the MODIS data , this research analyses the relation between the vegetation water and rainfall / relative water humidity .

温度超过45℃持续2h或土壤相对湿度达100%超过20h，蛹羽化率均为0。

The eclosion rate of larvae is zero when the temperature is higher than 45 ℃ for 2 hours or the relative moisture of soil is 100 % for 20 hours .

山西省代表站不同土层逐旬土壤相对湿度预报模型

Forecast Model for Soil Relative Moisture of Ten Days in Different Soil Layers in Shanxi Province

此方法简单易行，对半干旱半湿润气候区雨养田土壤相对湿度的预报具有一定的参考价值。

It was showed that physical statistics was a simple and easy method to forecast the soil moisture in semi-arid and semi-humid climate zones for the rain-fed farmland .

结果表明：在实际的干旱遥感监测服务中，可以使用表观热惯量与土壤相对湿度建立的模型来监测地面旱情。

The results reveal that the model depending on apparent thermal inertia and relative soil humidity can be used to monitor drought in the monitoring services by remote sensing .

当春花生在6月下旬～7月出现持续无透雨天数>20d，且耕作层土壤相对湿度达30%以下时，将影响花生子粒膨大，造成减产。

When the number of days with drought ( the late part of June to July ) is greater than 20d , the soil moisture is less than 30 % , the production of peanut was poor .

通过对大量历史资料的统计分析得出0～30cm深土壤层的相对湿度与相对蒸降差这两个物理量，与牧草生长发育及产草量有密切的关系。

Though analyzing a lot of historical meteorological data , it is shown that both the rela - tive moisture of soil in 0 ~ 30 cm depth and the relative difference between evapotranspiration and rainfall relates closely to the growth and yield of grass .

在日变化上，风速和气温变化差异显著，土壤温度和相对湿度变化程度差异不显著。

In different time , the wind speed and air temperature changed remarkably , while the soil temperature and air relative humidity changed slightly .

通过广义线性模型（generalizedlinearmodels，GLM）拟合了草本层物种丰富度与地形因子、土壤因子以及地形相对湿度指数（TRMI）之间的关系。

The species richness of herb layer was fitted in the topographic and soil feature factors , as well as the topographic relative moisture index ( TRMI ) by the generalized linear models ( GLM ) .

间作后夏季园内的空气和土壤温度降低，相对湿度和土壤含水量提高，蒸发量减小，有利于果树和间作物生长。

During summer in the intercropping fields air temperature , soil temperature and evaporation rate were lower , and relative humidity and soil water content were higher than that in the non-stripping farmland . Those were favorable to the growth of the intercropped crops and fruit trees .

辐射强迫降低太阳辐射，空气和土壤温度，增加空气相对湿度和土壤相对湿度。（2）辐射强迫对三种植物幼苗的光合作用影响明显。

Radiative forcing reduced solar radiation , air temperature and soil temperature , and increased soil relative humidity and air relative humidity . ( 2 ) Radiative forcing had obvious effects on the the photosynthesis of the three kinds of plant seedlings .

考虑地形、植被和土壤类型因素时，下垫面越均一，表观热惯量与土壤相对湿度的相关性越好，但植被覆盖对地表温度差的影响需要进一步的研究。

Considering a landform , vegetation and soil types , the correlativity between apparent thermal inertia and relative soil humidity become better as the underlying surface become more uniformed , but the effects of vegetation coverage on temperature on ground surface need be further studied .