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Soil water not available for absorption by plants. 无效水植物不能吸取的土壤水
keeping soil water 保墒抗旱
An increase in soil water content would decrease their movement. 土壤水分含量的增加将减低它们的移动。
Soil water erosion is a complex physicochemical process. 土壤水蚀是一个复杂的物理化学过程。
The soil water stress leads to the increase in stoma density. 水分胁迫使气孔密度增加；
Spatial variability of soil water retention curves on a forested hill-slope. 森林流域坡面林地土壤水分运动特征参数空间异质性研究。
But high-output and high-efficiency is the conditions of managing soil water. 而把高产高效水作为指导当地林业生产的土壤水分管理条件。
BY PERFECT AERATING, IT CAN KEEP SOIL LOOSEN, TO STORE AND SUPPLY OXYGEN AND AZOTE. 3通气性好，可长期保持疏松，具有贮存，提供氧氮功能。
The effect of SM is better than that of PM when the aim of mulching is to keep soil moisture. 秸秆和地膜覆盖都不同程度地增加了土壤三大种群微生物数量，但秸秆覆盖增加幅度大于地膜覆盖。
The value of Q10 of soil respiration increased with soil water content. 土壤水分含量的增加可增加土壤呼吸的Q10。
The soil water and salt transport were studied under 3 crop planting condition. 对3种作物种植条件下土壤水盐运移规律进行了研究。
The abstraction of elements from soil water by plant roots can have a marked effect on chemical reaction rates. 植物根系从土壤水中摄取养分元素能对化学反应速率产生显著的影响。
Water deficit is influenced by the level of soil water potential at the root surface. 水分亏缺是受根系表面土壤水势高低影响的。
On the basis of the isograms, we analyzed the variation law of yield and grain protein content with soil water content, nitrogen and P2O5,. 用等值线图描述产量和蛋白质含量的水氮和氮磷两因素效应，分析产量和蛋白质含量变化规律及其关系，确定实现一定生产目标的水肥管理方案。
A Study of Effects of the Concrete Mulch on Movement of Soil Water and Soil Heat Transfer. 硬覆盖对土壤水热传输及作物生长发育影响的试验研究。
Relationship between soil water content and water use efficiency of apple leaves. 土壤含水量与苹果叶片水分利用效率的关系。
The soil water and nutrient relationships are closely interrelated and should be examined together. 土壤水分和养分是紧密联系的，应当一起研究。
Theoretically, one would expect the distribution of a fumigant to be more rapid at lower soil water contents. 在理论上,预计熏蒸剂的分配在土壤水分含量较低时会更迅速。
Research on relationship between crop drought and soil water retention and supply characters in hilly red clayey soil. 低丘红壤作物易旱与土壤持水供水特性的关系。
The effect of yield and grain protein content with soil water content and nitrogen (or nitrogen and P2O5) was described by isopleth. 用极差变换将产量和蛋白质含量理论值标准化，其标准值曲线的交点即为二者的最佳结合点。