Study On Planting Direction And Field Allocation Of Corn And Soybean Intercropping

At present,China’s corn planting area is large,and the planting area of soybeans is decreasing year by year.As one of the world’s five largest economic crops,soybean(Glycine max)is an important source of human high-quality protein and edible oils.The intercropping mode can increase the planting area of soybeans while ensuring that the corn planting area is not reduced.In this study,selecting variety Nannong 48,setting different rows and directions of different things and 2:2,2:3 and 2:4 three different corn soybean row ratios to study different corn varieties and field allocation under jade/bean intercropping The effect on the physiological characteristics and yield of soybean growth.the experiment shows:1、By comparing the dry matter weight and net photosynthetic rate(Pn),stomatal conductance(GS),intercellular CO2 concentration(Ci),and transpiration rate(Tr)of different growth stages under different jade/bean intercropping conditions in different field configurations,four important photosynthesis parameter.2、In several different field configurations，Four growth indicators including plant height,stem diameter,branch number and pod height were analyzed,as well as four yield structural indicators of 100-grain weight,number of pods per plant,grain weight per plant and yield per acre.With the advancement of the growth period,all indicators showed a trend of single-peak curve that increased first and then decreased,reaching a peak in the pod period.The planting direction of the east and west is wide and narrow,and the ratio of corn to soybean rows is 2:3 planted under the condition of intercropping of soybeans.Compared with other field configurations,soybeans can obtain better plant type and form a better canopy structure,get more output.3、By comparing the carbon and nitrogen metabolism of soybeans at different growth stages under different maize/bean intercropping conditions in different field configurations.The soluble sugar content,sucrose content,glucose content,starch content and nitrogen content of soybean were analyzed.With the advancement of growth period,all indicators showed a trend of single peak curve which increased first and then decreased,and peaked in the pod stage.In the early stage of fertility,the content of the five indicators in the leaves is greater than the content in the stem.After the pod period,it gradually transferred from the stems and leaves to the pods.Planting is carried out in a wide and narrow manner,and the ratio of corn to soybeans is 2:3 planted under the condition of intercropping with jade beans.Compared with other field configurations,it is more conducive to the carbon and nitrogen metabolism of soybean under the condition of maize/bean intercropping and the transfer of soybean from source to reservoir.