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首页> 外文期刊>土壤圈（英文版） >Leaf Turgor Potential, Plant Growth and Photosynthesis in Organically Fertilized Sweet Corn
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Leaf Turgor Potential, Plant Growth and Photosynthesis in Organically Fertilized Sweet Corn

机译：有机施肥甜玉米叶片膨大势，植物生长和光合作用

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摘要

A greenhouse pot experiment was conducted using a complete random design with six replications. A pressure-volume curve analysis was employed to study the effects of organic fertilizers on plant water relations in sweet corn (Zea mays L. cv.Honey-bantam) in terms of leaf osmotic concentration (CS), osmotic potentials at full turgid status (πFT) and at incipient plasmolysis (πIp), and of symplastic (ζsym) and apoplastic (ζapo) fractions in the tissue water compartment in relation to photosynthetic capacity (PC) and dry mass accumulation. At the seedling stage (day 15), plants with chemical fertilizer treatments showed lower πFT, πIp and ζapo and higher CS, ζsym and PC than those with organic fertilizer treatments.Compared to PC and relative growth, where values from day 15 to day 75 were first lower for organic treatments and then higher, ζsym and CS values were similar, while πFT and πip were opposite being higher then lower. Dry mass production with organic fertilizcr was higher than or close to the chemical fertilizer treatments in the later growth stage (day 75),though dry mass production with chemical fertilizers was much higher in the early and middle growing stages (days 15 and 45). Increased photosynthesis and dry mass production in later growth stages due to organic fertilizers were associated with increased osmotic concentration in the tissue and the symplastic fraction of the tissue water compartment. These might favor stomatal opening and biochemical activities.
机译：使用完全随机的设计并进行六次重复进行温室盆栽实验。利用压力-体积曲线分析，研究了有机肥料对甜玉米（Zea mays L.cv.Honey-bantam）中植物水分关系的影响，包括叶渗透浓度（CS），全饱和状态下的渗透势（ πFT）和初始溶质（πIp）以及组织水室中与光合能力（PC）和干物质积累相关的共生（ζsym）和质外生（ζapo）分数。在幼苗期（第15天），与施用有机肥料的植物相比，化学肥料处理的植物的πFT，πIp和ζapo较低，CS，ζsym和PC的含量较高。与PC和相对生长相比，第15天至第75天的值对于有机处理，它们首先降低，然后更高，ζsym和CS值相似，而πFT和πip相反，先高后低。在生长后期（第75天），有机肥的干法批量生产高于或接近化学肥料处理，尽管在生长初期和中期（第15天和第45天），化学肥料的干法批量生产要高得多。由于有机肥料的增加，在后期生长阶段光合作用和干物质生产的增加与组织中渗透浓度的增加和组织水室的增生分数有关。这些可能有利于气孔开放和生化活动。

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