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气候变化对农作物生长和发育产生影响已是一个不争的事实。为了预测未来气候变化对C4植物玉米产生的可能影响以及检验作物模型模拟得出的结果,本研究在中国辽宁锦州地区设立了红外增温模拟试验,利用开放式增温系统和水分控制装置,设置不同水分和温度梯度来模拟气候变化对东北玉米的影响。结果表明:单独增温使玉米植株变矮6.5%,同时增温和增水则对株高无影响;增温导致叶面积减小13.8%,增水则影响较小;增温和增水都不利于干物质的累积,但未达到显著性差异;增温对叶的分配系数有正效应,增水有负效应,同时增温和增水的情况下,则对叶的分配系数影响不明显;增温降低籽粒产量40%,其主要是降低了果穗长、果穗粗、穗行数、行粒数、穗粒数,同时增大了瘪粒数。
It is an indisputable fact that climate change has an impact on crop growth and development. In order to predict the possible impact of future climate change on C4 plant maize and to simulate the crop model, this study established a simulation experiment of infrared temperature increase in Jinzhou, Liaoning Province, China. Using an open temperature-rising system and a moisture control device, Different Moisture and Temperature Gradients to Simulate the Impact of Climate Change on Northeast Corn. The results showed that corn plants were shortened by 6.5% with increasing temperature alone, while no effect on plant height was observed with increasing temperature and increasing water temperature; leaf area decreased by 13.8% Which is not conducive to the accumulation of dry matter, but did not reach significant differences; warming positive effect on leaf partition coefficient, increasing water have negative effects, while warming and increasing water, the distribution coefficient of leaf has no obvious effect ; Warming reduced the grain yield by 40%, which mainly reduced the ear length, the ear diameter, the ear number, the row grain number, the grain number per spike, and simultaneously increased the number of deflated grains.