Limbic-System
发表于 2025-3-21 16:12:09
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谷物
发表于 2025-3-21 23:56:40
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alliance
发表于 2025-3-22 02:15:10
Heat Balance of Bare Ground,. The surface also loses heat to the cold sky by long wave radiation. It can be visualized that heat is transferred by conduction to the lower soil layers, neglecting water movement in the soil. At the surface, not only sensible but also latent heat transfer occurs. These heat flows from the surface
招募
发表于 2025-3-22 06:04:35
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orthopedist
发表于 2025-3-22 10:44:41
Temperature Environment Under Cover, In the daytime, the main energy source is, of course, the sun, and its energy is stored in the soil. The transmissivity of the film used for covering is an important factor in getting a large amount of energy into the soil surface. At night, the energy source is thus the soil layer. The main heat l
hypertension
发表于 2025-3-22 14:42:00
CO2 Environment,ay the CO. level is fairly constant around 300 to 350 ./. due to photosynthesis by plants, and it rises to around 400 to 450 at night. The CO. level is more important under cover, especially in plastic houses where air exchange is normally restricted in order to raise temperatures in a cold climate.
hypertension
发表于 2025-3-22 17:24:35
Water and Water Vapor Environment,so water movement is related to heat flow. However, in order to simplify the problem and understand the system clearly, it is again assumed that vapor flow in soil is independent of heat flow, as we assumed in the chapter on heat flow analysis. Furthermore, we will focus only on vapor movement in th
thalamus
发表于 2025-3-22 22:48:27
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Kidney-Failure
发表于 2025-3-23 04:38:25
Plant Response to the Environment,y under cover, is complex, and modelling it is not simple. This is one of the main reasons why most greenhouse models do not have or have only rather simple sub-models of plant growth. In the open field, the time courses of environmental conditions such as air temperature and carbon dioxide concentr
Anhydrous
发表于 2025-3-23 07:41:34
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