| 1. | Advances in the inhibition of soil evaporation in farmland 抑制农田土壤蒸发的研究进展 |
| 2. | Calculation of quantity of soil evaporation takes an important part in moisture content prediction , rainfall surface flow calculation and evaluation of water resources 摘要土壤蒸散发量的计算,在墒情预报、降雨径流计算及水资源评价中都占有重要的地位。 |
| 3. | In the third chapter , the ratio of soil evaporation to crop transpiration under different furrow irrigation ways adopted in summer maize field was analyzed by using the measured data in lysimeters 与固定隔沟灌相比,交替隔沟灌土沟的干湿交替循环不会使根区部分土壤出现长期极度干燥的情况,因此对作物根系的生长和吸收比较有利。 |
| 4. | The estimation methods of water requirement , and determination of basal crop coefficient and soil evaporation coefficient under the controlled alternative furrow irrigation in summer maize were studied and verified in the fifth chapter ( 4 )夏玉米田棵间土壤蒸发主要发生在灌后几天表层土壤比较湿润的时期内,其中表层土壤含水率和叶面积指数是影响土面蒸发的两个基本因素。 |
| 5. | The result shows that not only spatial precipitation heterogeneity and spatial land use / cover variability but also spatial soil evaporation heterogeneity influences flood simulation . as remarked above , spatial variability is very crucial to hydrological modeling 计算结果表明不仅降水空间分布、模型参数对水文过程模拟的精度有很大的影响,而且土壤蒸发空间不均匀性对模拟洪水也有一定的影响。 |
| 6. | We found that the higher midlayer and deeplayer water contents after harvest , the faster alfalfa grew , and , the more quickly covered the bare soil , the more soil evaporation restrained . in this way , the soil could sustain higher shallow soil water contents 即使在平水年和丰水年,在7月之前降水也不能满足苜蓿的正常生长需要,而在7月以后,降水量略大于苜蓿需水量,所以要获得高产必须进行灌溉。 |
| 7. | The effects and mechanisms of different water saving agricultural practices ( mulching , cultivating practice , planting treatments and irrigation treats ) on preventing soil evaporation and the possible measures that should be emphasized in the future are discussed 摘要阐述了节水农业措施(覆盖、耕作方式、种植方式和灌溉制度)对农田土壤蒸发的抑制效果,并分析其抑制土壤蒸发的机制和减少土壤蒸发的可行途径,指出今后该方面的研究重点。 |
| 8. | On the platform of digital basin derived from raster dem data , - a grid - based hydrological model and a subcatchment - based hydrological model were used to study the effects of spatial variability on runoff process on such aspects as precipitation , model parameters and soil evaporation 在构建的数字流域平台基础上,建立分别基于子流域离散和栅格离散的数字水文模型,从而分析研究降水、模型参数和土壤蒸发的空间不均匀性对模拟水文过程的影响。 |
| 9. | To utilize hydraulic soil evaporimeter and supporting meteorology , radiation , the materials on the surface water evaporation , considering the influence of each factor of " soil - plant - atmosphere " system on soil evaporation , we set up calculating model of the soil evaporation which is suitable for the heilonggang region 利用水力式土壤蒸发器及其配套的气象、辐射、水面蒸发仪器观测资料,综合考虑“土壤植物大气”系统中的各个因素对土壤蒸散的影响,建立了适于黑龙港流域的土壤蒸散量计算模型。 |
| 10. | By introducing a parameter into the three sources evaporation module of xin ' anjiang model , the whole layers nonlinearity method and the middle layer nonlinearity method were applied to evaporation computation to study the effect of spatial soil evaporation variability on runoff simulation 模拟结果说明模型参数的空间不均匀性对水文过程模拟的影响是很大的。将新安江蒸发模型引入一个新的参数,采用整层非线性方案和中层采用非线性方案来分析土壤蒸发不均匀性对模拟水文过程的影响。 |