密度和留苗方式对湘荟玉1号农艺性状及产量的影响OA

To optimize the planting pattern and improve the yield of Xianghuiyu No.1,a field experiment was conducted in Caijiatang Village,Dengyuantai Town,Wugang City,Hunan Province in 2024.Different planting densities(M1:45 000 plants/hm2,M2:52 500 plants/hm2,M3:60 000 plants/hm2,M4:67 500 plants/hm2,M5:75 000 plants/hm2)and seedling retention methods(S:single plant per hole,D:double plants per hole)were set up to compare and analyze the agronomic traits and yield of maize under different treatments.The results showed that with increasing planting density and seedling number per hole,the plant height and ear height of maize increased,stem diameter decreased,and ear traits deteriorated.Under the single plant per hole mode,the leaf area index during the whole growth period of maize performed better,and it was significantly higher during the tasseling and silking stages compared to the double plants per hole mode.Yield of corn first increased and then decreased with increasing density,with the highest yield observed at 67 500 plants/hm2,while under the same density,the single plant per hole mode achieved higher yield.Comprehensive analysis indicates that the optimal planting density for Xianghuiyu No.1 is 67 500 plants/hm2,combined with single plant per hole retention,to achieve high yield.