Effects of different sowing methods and fertilization levels on photosynthetic characteristics and yield composition of highland barley
In order to explore the response mechanism of Ganqing series barley varieties to wide and uniform sowing and conventional strip sowing under the same fertilization conditions,a two-factor random block design of sowing method and fertilization level was used in this experiment.A total of 2 sowing methods and 5 fertilization levels were set,for a total of 10 treatments.The results showed that conventional strip sowing could increase the basic seedlings,tiller number and plant height of Ganqing 9,while wide and uniform sowing could increase the panicle length of Ganqing 9.Wide and uniform sowing could increase the net photosynthetic rate and stomatal conductance of the leaves of Ganqing 9 and reduce the intercellular carbon dioxide concentration,while conventional strip sowing reduced the transpiration rate of Ganqing 9 leaves.Compared with conventional strip sowing,wide and uniform sowing could effectively increase the yield,grain number per spike,grain weight per spike and 1 000-grain weight of Ganqing 9,while effective spike sowing was higher in conventional strip sowing than wide and uniform sowing.In conclusion,under the condition of equal fertilizer,wide and uniform sowing could significantly increase the number of grains per spike and 1 000-grain weight,increase the yield,and facilitate the photosynthetic absorption and synthesis of flag leaves.
万方数据
维普
