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首页> 外文期刊>日本作物學會紀事 >Studies on Cover-Culture of Tobacco : 4. On carbon-dioxide environment in cover-culture
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Studies on Cover-Culture of Tobacco : 4. On carbon-dioxide environment in cover-culture

机译：烟草覆盖培养的研究：4。覆盖培养中的二氧化碳环境

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摘要

This paper deals with carbon-dioxide environment in cover-culture of tobacco plant. Results obtained are as follows: 1. In the closed type covering (with polyethylene film), carbon-dioxide concentration increased at night, decreased at day. Daily minimum carbon-dioxide concentration in that covering decreased with the number of days after transplanting, and it became as low as the natural air concentration at the 12th (transplanted on May 23rd) after and at the 9th (transplanted on April 5th). On the other hand, carbon-dioxide concentration in the opened type covering (with melamin resin coated paper) was epual to the natural air at day or night. 2. Carbon-dioxide concentration in the closed type covering with paper was influenced by moisture of the paper, i. e. in case of the covered paper wetted with rain or dew, carbondioxide concentration changed in the same course with that in the covering with polyethylen film, but it remained almost constant all day, when the paper was dried. 3. The maximum photosynthetic rate of the tobacco plant in the covering occurred some time between 7 : 00 and 9 : 00 a. m. 4. Dry matter production of tobacco plant in the covering with paper (closed type) was better than the covering with polyetylene film (closed type). It may be one of the reason that carbon-dioxide concentration keeped high in daytime.
机译：本文涉及烟草植物覆盖培养中的二氧化碳环境。得到的结果如下：1。在封闭式覆盖物（用聚乙烯薄膜）中，含碳浓度在夜间增加，日期下降。每日最低碳二氧化碳浓度在该覆盖物中随移植后的天数减少，并且在第9次和第9月的第12月（5月23日移植的天然空气浓度下降（移植到4月5日）。另一方面，开放式覆盖物中的二氧化碳浓度（用梅氨酰树脂涂布纸）在白天或夜间以自然空气脱节。 2.用纸张的封闭式覆盖物中的二氧化碳浓度受到纸张的水分的影响，i。 e。如果覆盖的纸张用雨或露水润湿，在覆盖着聚乙烯膜的覆盖过程中，碳二氧化物浓度在覆盖物中变化，但是当纸干燥时，它一整天几乎恒定。 3.覆盖物中烟草植物的最大光合速率发生在7：00和9：00之间的一段时间。 m。 4.用纸覆盖物（封闭式）在覆盖物中的干物质生产优于覆盖聚丙烯薄膜（封闭式）。它可能是白天在白天保持高的原因之一。

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