CO_2浓度增加对小麦和玉米品质影响的实验研究

The Experimental Research about the Effects of CO_2 Enrichment on Wheat and Cor n Quality

通过 3种 CO2 浓度 ( 70 0× 10 -6、 50 0× 10 -6、 350× 10 -6)模拟实验表明 :CO2 浓度增加使小麦籽粒的蛋白质、赖氨酸、脂肪含量增高 ,淀粉含量下降 ,品质得到提高 ;玉米则相反 ,其蛋白质、赖氨酸、脂肪含量随 CO2 浓度升高而减少 ,淀粉含量略有增高 ,品质有所下降。 70 0× 10 -6的小麦籽粒粗蛋白、赖氨酸、粗脂肪、粗淀粉比 350× 10 -6分别增长 3.0 %、 3.0 %、 8.5%和 - 2 .3% ,玉米增长- 7.5%、 - 10 .5%、 - 3.7%和 0 .6% ;50 0× 10 -6小麦分别增长 4 .4 %、 9.1%、 11.3%和 - 1.7% ;玉米增长 - 5.0 %、 - 5.3%、 - 4 .0 %和 2 .6%

The simulation experiments under 3 CO 2 concentration (700×10 - 6 、 500×10 -6 、 350×10 -6 ) showed: the contents of protein, lysine , f at were increased, and starch content was decreased for wheat with CO 2 concent r ation enhancing. The quality of wheat was improved. On the contrary, the content s of protein, lysine and fat were decreased, and starch content has enhancement a l ittle for corn. Compared with 350×10 -6 CO 2 concentration,the increasin g rate of protein, lysine, fat and starch were 3.0%, 3.0%, 8.5%, -2.3% respec tively for wheat, and -7.5%, -10.5%, -3.7% and 0.6% for corn under 700×10 -6 co ncentration; 4.4%, 9.1% , 11.3%, -1.7% for wheat, and -5.0%, -5.3%, -4. 0% and 2.6% for corn under 500×10 -6 concentration.