植物在一定生长期内积累的干物质与蒸腾失水量的比值,用克(干物质)/公斤(水)表示,也可以说是植物每消耗1公斤水所形成干物质的克数。
现在国际上通用mmol·m -2 ·s -1 2.蒸腾比率(transpiration ratio) 或蒸腾效率(transpiration efficiency) 指植物在一定生长期内所积累的干物质与蒸腾失水量之 比。常用g·kg -1 表示。
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(2)蒸腾效率( transpiration ratio):也称蒸腾比率,是植物每消耗1000g水所生产干物质的克数,或植物在一定时间之内干物质累积量与同期所消耗的水量之比。
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或蒸腾效率 Transpiration Efficiency
The axial roots of potato absorbed Ca2+,which was mainly transported to various orGA3ns of the plant by the transpiration stream. But potato tubers grown under the ground with lower transpiration efficiency,therefore,few Ca2+ can be directly transported to the potato tubers.
马铃薯主根吸收的Ca2+,主要以蒸腾流的方式输送到植物的各个器官,马铃薯的块茎生长在地下,蒸腾效率很低,所以主根吸收的钙很难直接输送到马铃薯的块茎中去。
参考来源 - 钙素对马铃薯生长发育、光合作用及物质代谢影响的研究·2,447,543篇论文数据,部分数据来源于NoteExpress
交替隔沟灌溉不降低光合速率而蒸腾速率有所下降,并有利于提高蒸腾效率;
AFI can not decrease photosynthesis rate but it can decrease evaportranspiration rate and is helpful to increase evaportranspiration efficiency.
同一树种蒸腾效率随立地水分条件而变化,水分条件愈差,蒸腾效率亦愈低。
The worse the water condition was, the lower the efficiency of transpiration was.
另一方面,机械活化的生态系统,如低能源效率的家用电器,净化在原地的水,用于植被灌溉和蒸腾。
In the other hand, mechanically activated ecosystems, as living machines of low energy performance, purify water in situ, used for vegetation irrigation and transpiration.
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