Optimization Of Different Modes And Variety Screening Of Maize Intercropping Soybean In Tumochuan Plain

The banded compound planting of maize and soybean is an important intercropping method widely implemented in many areas,which makes full use of space,light and heat,water and nutrients,gives full play to marginal effects,and realizes production increase and income.It is a typical golden partner in intercropping.Under the premise that the yield per unit area of maize and soybean has reached a high level,it is an important way to improve the utilization rate of resources and environment as well as the yield and benefit of crop population to explore the suitable model of jade and soybean intercropping.This study will be conducted in Qitanban Village,Tabusai Township,Tumote Left Banner,Hohhot,Inner Mongolia Autonomous Region in 2021,located in Tumochuan Plain at the southern foot of Daqingshan in central Inner Mongolia Autonomous Region.Three intercropping modes of maize Fengdan 189 and soybean Changnong 30 were set up,including 2+3,3+3,4+3(F2C3,F3C3,F4C3),and two intercropping modes of Denghai618 and Changnong 30 were 4+3,4+6(D4C3,D4C6).At the same time,three different maize varieties Fengdan 189,Fumin 228 and Denghai 618 and three soybean varieties J13122,Zhonghuang 35 and Changnong 30 were screened under 2+3 and 4+3intercropping modes.The agronomic traits,dry matter accumulation,nutrient absorption,yield factors and yield of different soybean and corn varieties were determined and analyzed under different intercropping modes.This study aims to provide theoretical basis and practical guidance for the rational intercropping pattern and variety selection of maize and soybean.The main results are as follows:(1)The experimental results of the same maize and soybean varieties in different intercropping modes showed that among the three maize row number intercropping modes of maize Fengdan 189 intercropping and soybean Changnong 30 intercropping,F4C3 mode had a good promotion effect on increasing maize and soybean stem diameter,increasing dry matter accumulation per plant,nitrogen and phosphorus uptake,yield and total output value,and the overall benefit was good.It can be used as a good production and application model in maize and soybean intercropping.Among the two soybean row number intercropping modes of maize Denghai 618 and soybean Changnong 30,D4C6 mode was beneficial to increase stem diameter,dry matter accumulation,nitrogen and phosphorus uptake,yield and total output value of maize,soybean,and soybean,and could also be used as a good model for maize and soybean intercropping.(2)Under the same intercropping mode,the results of intercropping experiments of different maize varieties showed that under the two intercropping modes of 2+3 and 4+3,the maize variety Fengdan 189 had a higher dry matter accumulation per plant,a higher nitrogen and phosphorus uptake,grain yield and total intercropping value,while Denghai618 had a lower plant height,and a higher nitrogen and phosphorus uptake and utilization rate.Grain yield and total intercropping value were the highest.Fengdan 189 and Denghai618 can be used as good maize and soybean intercropping varieties for production choice.(3)Under the same intercropping mode,the results of intercropping experiments of different soybean varieties showed that under the 2+3 and 4+3 intercropping modes,the dry matter accumulation per plant,stem diameter,total nitrogen and phosphorus nutrient uptake of soybean variety Changnong 30 were generally higher,and the grain yield was medium.The stalks of Zhonghuang 35 were thicker,the plant height was shorter,the dry matter accumulation per plant was lower,the nitrogen and phosphorus uptake was medium,but the grain yield was higher.Zhonghuang 35 and Changnong 30 can be used as soybean alternative varieties in maize and soybean intercropping.