开放式CO2浓度升高和增温交互作用对水稻产量的影响
毕业论文关键词：CO2浓度升高；温度升高；交互作用；水稻；产量
The Interaction Effects of CO2 Concentration Increasing and Temperature Increasing on Rice Yield
Abstract：Climate change has become one of the most common environmental concerns of all walks of life today. Agriculture is the most vulnerable industry affected by climate change. Among them, the increase of CO2 concentration and the increase of temperature are the most significant climate change characteristics. Rice is one of the main food crops in China, and it is of great significance to study the effects of both on rice yield. In this study, an open CO2 enrichment and temperature-increasing (T-FACE) system platform was used. The experiment was conducted in 2016 in Nanchong Town, Jiangdu District, Yangzhou City, Jiangsu Province. Based on the data of dry matter accumulation, yield and yield components of rice obtained in the experiment, the effects of CO2 enrichment and warming interaction on rice yield were quantitatively analyzed. The results showed that the increase of CO2 concentration increased by 8.47%, and the yield of rice increased by 8.59%. The increase of CO2 concentration and temperature increase decreased the yield of rice by 3.92%. CO2 concentration increased by 200μmol•mol-1 on the yield of rice can’t offset the warming effect of 2℃.
Key words: CO2 concentrationt；emperature；interaction；rice；yield
目 录
摘要1
关键词1
Abstract1
Key words1
引言1
1材料与方法3
1.1试验材料3
1.2试验地点3
1.3试验平台3
1.4试验处理3
1.5试验测定项目4
1.5.1植株干物质积累量测定4
1.5.2产量及产量构成因素测定4
2 结果与分析 4
2.1开放式CO2浓度升高和增温交互作用对水稻干物质积累与分配的影响4
2.1.1 CO2浓度升高和增温交互作用对水稻干物质量的影响4
2.1.2 CO2浓度升高和增温交互作用对水稻干物质分配的影响5
2.2 开放式CO2浓度升高和增温交互作用对水稻产量的影响6
2.3开放式CO2浓度升高和增温交互作用对水稻产量构成因素的影响6
2.3.1 CO2浓度升高与增温交互作用对水稻单位面积有效穗数的影响6
2.3.2 CO2浓度升高和增温交互作用对水稻每穗粒数的影响7
2.3.2 CO2浓度升高和增温交互作用对水稻千粒重的影响7
3讨论7
4结论8
致谢9
参考文献9
开放式CO2浓度升高和增温交互作用对水稻产量的影响
引言：随着工业化进程的加快和人类活动的加剧，煤炭、石油等化石燃料的
广泛使用以及大规模滥伐森林，大气CO2浓度逐步上升，导致全球气候变暖，预计到2050年CO2浓度将达到450~550 μmol•mol-1之间，温度相应增加2~4 ℃[1]。全球气候变化将使人类面临前所未有的严峻挑战，而“靠天吃饭”的农业是受冲击最大的行业之一。在过去的几十年，全球气候变化对我国很多地区的农业生产产生了重大影响，这将给未来农业生产带来新的挑战。CO2是作物进行光合作用的必要反应物，而温度又能对作物各种生理生化过程起调控作用，CO2浓度升高和温度增加势必会对作物产量造成影响。而另一方面，据联合国粮农组织估计，到2050年世界人口将达到90亿，粮食产量至少增加70%才能满足人口增长的需求[2]。全世界种植水稻的国家或地区有112个，每年播种面积1.5亿公顷，中国的水稻播种面积排世界第二，约0.33亿公顷，占全球23 %，而且水稻在我国粮食生产和消费中历来处于主导地位。因此，研究CO2浓度升高和增温交互作用对水稻产量的影响，以此作为依据预测未来气候变化大背景下水稻产量的变化趋势，对于合理控制生长环境以保证水稻产量具有重要意义。
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