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《硬核一中 免费漫画「下拉观看」-有声小剧场第七期...》剧情介绍：深入了解才知道老爷子都已经年过花甲了但始终无妻无子孤身一人硬核一中 免费漫画「下拉观看」-有声小剧场第七期...一臂震开三人东方南全身气势节节攀升仰天长啸双掌望空一推一道龙形气劲肆意翻腾盘旋顿时罩住了整个天际自己好像火了

《硬核一中 免费漫画「下拉观看」-有声小剧场第七期...》视频说明：撤退工作陷入僵局很多物资需要大型车辆运输大量物资在码头区域堆积如山长江舰队的运力跟不上我们得坚守更多的时间一个星期是基本底线每增加一天我们就能运走更多的东西和人口……王艺迪Abstract：Supplemental lighting is critical to the growth of greenhouse crops under the environmental conditions of low temperatures combined with weak radiation during the winter and spring seasons. To achieve the essential daily light integral (DLI) for greenhouse crop growth, a supplemental light strategy was proposed based on hourly light integral (HLI). The target HLI was calculated by dividing the target DLI by the duration of light exposure, while the actual HLI was obtained by accumulating the Photosynthetic Photon Flux Density (PPFD) based on real-time monitoring. Subsequently, the supplemental lighting duration for the next hour was determined by the difference between the target HLI and the actual HLI from all previous periods. Furthermore, the supplementary lighting strategy incorporated maximum values for both PPFD and temperature, and the supplemental light was withheld whenever the actual PPFD or temperature exceeded these values. An experiment was conducted on strawberries in a commercial greenhouse, targeting a DLI of 12.6 mol/(m2?d), with no supplemental lighting as the control. The results indicated that LED supplemental lighting based on HLI increased the DLI to approximately 10 mol/(m2?d) and raised the strawberry canopy temperature by 1°C-2°C. Compared to the control treatment, the LED supplemental lighting based on HLI significantly improved the net photosynthetic rate, stem thickness, number of leaves, leaf length, and leaf width of the strawberry plants. Additionally, the fruit yield per plant, soluble solids content, and sugar-acid ratio in the supplemental lighting treatment increased by 32%, 21%, and 33%, respectively. Thus, LED supplemental lighting based on HLI is an effective strategy for improving the yield and quality of greenhouse crop production.

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