When relative soil water is below 75 %, the cause of rate drop is non-stomatal limitation.
当土壤相对含水量低于75%, 光合非气孔限制因素开始出现.
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The ethnic culture has its soil, the development history and status quo of the group identification.
各民族文化有其产生的土壤, 发展的历史和群体认同的现状.
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Machines, known as soil stabilizers, often carry out all forms of stabilization.
以上各种稳定方法, 通常由称作土壤稳定装置的机械来实施.
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Their spindly, delicate roots seem just plucked from the earth.
它们精致 、 细的根系乍看之下还以为是刚从土壤中摘出来的.
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快速测量土壤水分,时域反射原理,内置数据采集器.
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Soil erosion and non-point source pollution are two serious environmental issues.
土壤侵蚀与 非 点源污染是两大重要的环境问题.
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Soil erosion is a result of comprehensive effect of geographical environment factors.
土壤侵蚀是地理环境各因子综合作用的结果.
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Properly managed forests prevent flooding and soil erosion, and stabilize climatic conditions.
管理得当的森林可以防止土壤的冲蚀和水灾, 而且可以稳定气候状况.
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One important form of soil conservation is the use of windbreakwindbreaks.
其中一种重要的保持土壤的方式就是防风林.
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It can also take the lead in teaching soil conservation and environment protection.
它还将带头传授土壤保存和环境保护方面的知识.
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与裸地相比, 林地和草地对地表径流的控制率达到63%~89%,对土壤流失的控制率达到69%~94%.
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试验主要研究土壤温度 、 湿度及播种期与玉米丝黑病发生的关系.
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元素在碱性土壤中的累积是影响试验用污水长期灌溉应用的关键因素.
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