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首页> 外文期刊>Australian Journal of Crop Science >Responses of rice yield and grain quality to high temperature in open-top chamber to predict impact of future global warming in Thailand
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Responses of rice yield and grain quality to high temperature in open-top chamber to predict impact of future global warming in Thailand

机译：水稻产量和谷物品质对开放式室内高温的响应，以预测泰国未来全球变暖的影响

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The research was aimed to study effects of high temperature range in comparison with the ambient conditions (about 2-4 oC at daytime and 1-2 oC at nighttime) obtained from the chosen open-top chamber (OTC) design on maturity stage of rice such as maturity growth indexes, yield attributes and grain quality characteristics. The rice grown outside the OTC was used as a control sample. Other key parameters of environment (solar radiation and relative humidity) were also determined for inside and outside the OTC. At daytime, the solar radiation inside the OTC was 249.79-171.90 Wm-2, which corresponds to 55.18 - 46.02 % of RH from August to December in 2014, respectively. The temperature range was from 35.75 – 31.84 oC in this period. At nighttime, the RH was 88.62-75.23 % and the temperature was 27.87-22.96 oC. There was a well- linear relationship between inside and outside for all parameters. It appeared that high temperature (35.74-31.84 oC at daytime and 27.87-22.96 oC at nighttime) inside the OTC during crop period significantly decreased number of tiller per pot and increased height of plant at maturity stage. The percentage of ripen panicle, length of panicle, and number of spikelet per panicle were significantly greater than those of control plants. However, the weight of 1,000 seeds was decreased and the percentage of unfilled grain inside the OTC increased, compared to rice outside, showing the way of a reduction in rice yields and qualities. The total carbohydrate of grains was decreased, while the protein and ash content increased. There were no significant difference of the moisture of rice grains and fat content while the color of grains was significantly different between inside and outside the OTC. The appearance of rice paddy inside was greener than that of outside.
机译：该研究旨在研究从选定的开放式顶棚（OTC）设计获得的高温范围与环境条件（白天约2-4 oC，夜间约1-2 oC）相比对水稻成熟期的影响。例如成熟度增长指标，产量属性和谷物质量特征。在OTC以外生长的大米用作对照样品。还确定了OTC内部和外部的其他环境关键参数（太阳辐射和相对湿度）。白天，OTC内部的太阳辐射为249.79-171.90 Wm-2，相当于2014年8月至12月相对湿度的55.18-46.02％。在此期间，温度范围是35.75 – 31.84 oC。在夜间，相对湿度为88.62-75.23％，温度为27.87-22.96 oC。对于所有参数，内部和外部之间存在良好的线性关系。作物生产期间OTC内部的高温（白天为35.74-31.84 oC，夜间为27.87-22.96 oC）显着降低了每盆分till数，并在成熟期增加了株高。成熟穗的百分率，穗长和每穗的小穗数均显着大于对照。然而，与外面的水稻相比，减少了1,000粒种子的重量，OTC内部的未填充谷物的百分比增加了，这表明减少水稻产量和品质的方法。谷物的总碳水化合物减少，而蛋白质和灰分含量增加。稻米内部和外部的稻米水分和脂肪含量没有显着差异，而稻米的颜色则显着不同。里面的稻田比外面的绿。

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