论文部分内容阅读
在中国气象局兰州干旱气象研究所定西气象和生态环境试验站,利用开放式红外增温系统设置增加0℃(对照)、1℃、2℃3个温度梯度,模拟田间增温对春小麦生长发育、产量及产量构成因素的影响.结果表明:冠层温度增加1~2℃,春小麦的全生育期比对照缩短7~11 d.生育前期增温使株高增高,叶面积指数增大;从拔节期开始增温使株高和叶面积指数降低,且增温2℃处理的效应大于增温1℃处理.温度升高导致叶绿素含量降低,尤其是灌浆后期到乳熟期.增温1~2℃,产量较对照降低25.4%~45.5%,主要是由于穗粒数和穗粒质量显著减少.增温处理明显降低了春小麦田间土壤贮水量,0~100 cm土壤贮水消耗量随温度的增加呈逐渐增加趋势,而在100 cm以下深层土壤变化趋势不明显.
At the Dingxi Meteorological and Ecological Experimental Station of Lanzhou Institute of Arid Meteorology, China Meteorological Administration, three temperature gradients of 0 ℃ (control), 1 ℃ and 2 ℃ were set up by using open infrared temperature-increasing system to simulate the effects of field warming on the growth and development of spring wheat , Yield and yield components.The results showed that the whole growth period of spring wheat shortened by 7 ~ 11 days compared with the control when the canopy temperature increased by 1 ~ 2 ℃ .The warming increased the plant height and the leaf area index increased in the early growth period. The plant height and leaf area index decreased with increasing temperature at the jointing stage, and the effect of increasing the temperature at 2 ° C was greater than that at increasing the temperature by 1 ° C. The increase of the temperature led to the decrease of the chlorophyll content, especially the late grain filling stage to the milky ripe stage, 2 ℃, the yield was reduced by 25.4% -45.5% compared with the control, which was mainly due to the significant decrease of the number of grains per spike and the grain quality of the ears.When the temperature was increased, the water storage capacity of spring wheat was significantly reduced, and the water consumption of 0-100 cm soil Increasing is gradually increasing trend, while in the depth of 100 cm below the trend of soil is not obvious.