CO_2浓度倍增对春小麦不同品系影响的试验研究  

EXPERIMENTAL STUDY ON IMPACTS OF 2×CO 2 ON SPRING WHEAT LINES

作　　者：郭建平[1] 高素华[1] 白月明[1] 温民[1] 王春乙[1] 

机构地区：[1]中国气象科学研究院农业气象研究中心,北京100081

出　　处：《资源科学》1999年第6期25-28,共4页Resources Science

基　　金：国家自然科学基金

摘　　要：通过试验对２ 个春小麦品系在 Ｃ Ｏ２ 浓度倍增下的反应进行了观测，结果表明，在 Ｃ Ｏ２ 浓度倍增环境中，晚熟品系的全生育期缩短比早熟品系少。晚熟品系的生物量和产量增加比早熟品系更显著，因此，晚熟品系可能更适合于未来的全球变化。另一方面，２ 个品系春小麦的光合速率、地下和地上部分的生物量在 Ｃ Ｏ２ 倍增环境中增加显著，但籽粒产量的增加小于生物量的增加，意味着在 Ｃ Ｏ２ 浓度增加时经济系数将减小，其原因将进一步研究。从另外一个角度去考虑，这些特点可能会成为农作物适合于未来全球变化的另一个增产途径。The responses of carbon dioxide concentration doubling (2×CO 2) on two spring wheat lines were observed.The results indicated that the shortening of growth period of late maturing line was less than that of early maturing line in the 2×CO 2 environment.But the increment of biomass and yield of late maturing line was more remarkable than that of early maturing line.Probably,the late maturing line was more adaptable for future global change.On the other hand,the photosynthetic rate,the root and the above ground biomass of the two lines were increased remarkably under the 2×CO 2 conditions.However,the increment of grain yields were less than that of biomass,meaning a decrease of economic coefficient under 2×CO 2 environment.The reason of this merits further studies.Taking into consideration from another angle of view point,these characteristics might bear their potentiality of increasing crop yield with adaptation of the global climate change.

关 键 词：浓度倍增 春小麦品系 生物量 光合作用 二氧化碳 

分 类 号：S512.12[农业科学—作物学] X511.032.3[环境科学与工程—环境工程]