a numerical model for analyzing the heat and water flow in the spac system under transparent polyethylene mulch is studied.

1、

for the further drought resistance study, the physiological and ecological and anatomical characteristics in spac system shall be added.

要全面研究植物的抗旱性，应在SPAC系统中研究植物生理、生态特性及解剖学特点。

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2、

the study makes a comparison of water physiological characteristics between two species and analyzes the relationship among the components of the spac system.

通风干湿表和气压计测定大气水分状况。分析了两种植物的水分生理特征与环境的相互关系。

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3、

the soil plant system is a very important subsystem of the soil plant atmosphere continuum ( spac).

土壤植物系统是土壤-植物-大气连续体（SPAC）中的一个重要子系统。

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4、

a study on water cycling and water use efficiency of the plantation spac in the southern loess plateau

黄土高原南部人工植被SPAC系统水分循环模式和利用效率研究

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5、

study on microclimate changes in the field under sprinkler condition principles of soil water movement in the spac system

喷灌条件下田间小气侯的变化和SPAC系统土壤水分运移规律的研究

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6、

study on the soil hydrodynamics model for the soil-plant-atmosphere continuum ( spac) system

基于SPAC系统的土壤水动力学模型研究

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7、

evapotranspiration model based on spac theory

基于SPAC理论的田间腾发量计算模式

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8、

studies on the water transport characters in spac system of mu us sandy land in ningxia

宁夏毛乌素沙地SPAC系统中水分运移特征的研究

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9、

plant root water uptake is an important part of the research on water transforming patterns in spac.

植物根系吸水过程是SPAC系统中水分运移规律研究的重要内容。

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10、

water conditions and relationship among the components of the spac system of mu us sandy land, china

毛乌素沙地SPAC系统中各部分水分状况及其关系的研究

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11、

energy parameters in spac model for mulched field

覆膜农田SPAC系统模型中能量参数的确定

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12、

a series of processes of exchange of water and energy are contained in spac.

土壤-植物-大气连续体（SPAC）中包括一系列的水分与能量交换过程。

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13、

application of spac in ecological environment oriented water resources management in arid region, nw china

SPAC系统在面向生态的西北干旱区水资源管理中的应用

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14、

we also analyzed water potential and the distribution of water flow resistance in consecutive spac systems.

同时对SPAC连续体系中的水分势能和水流阻力的分布规律进行了分析。

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15、

the coupled iteration method in solving the water movement and heat transfer in spac

求解SPAC系统水热输移的耦合迭代计算方法

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16、

nitrogen balance in spac system and the simulative model

SPAC系统中氮平衡及其模拟模型

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17、

water, heat transfer and crop growth simulation in spac with water and nutrient stress

考虑水分和养分胁迫的SPAC水热动态与作物生长模拟研究

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18、

study on evapotranspiration of winter wheat using spac model

利用SPAC模型对冬小麦蒸散发的研究

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19、

the soil-plant system is a very important subsystem of the spac.

土壤&根系系统是SPAC水分连续体中重要的子系统。

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20、

this paper applies the finite element method to water and heat equations in spac system.

应用有限元算法，对SPAC系统中的水分运动方程和温度方程分别进行数值求解。

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