关键词: 生物质炭, 生物质炭, 烟草品质, 土壤改良

Abstract: In order to proven alkali stress on physiological and biochemical and yield of sorghum varieties,a split plot design method was studied.The results showed that activities of SOD and POD could be improved and contents of Pro and MDA could be increased under alkali stress.in alkali concentration mmmol / 20-40 mmmol L/L range, with the increase of concentration of alkali stress ,SOD, POD, Pro and MDA increased, but the increasing range of the above four physiological indexes of different varieties were different.For niu S7 x, the SOD, POD, Pro and MDA increased amplitude were not significant with the increase of the concentration of alkali, only DS40 reached 5% difference significance than CK, showed that the species is not sensitive to alkali.And for 13 h2842 , with the increase of the concentration of alkali, SOD, POD, Pro and MDA increased significantly, differences reached significant or extremely significant level between the different deal, illustrated that the variety sensitive to alkali. Photosynthetic rate of different varieties reduced with the increase of alkali concentration , and thus leaded to express a similar change trend on the change of yield components, finally form the different production.