Different Intercropping Systems of Cotton-Sorghum:Study on Soil Nutrients,Cotton Agronomic Characters and Yield
To fully utilize the land resources and explore environmentally friendly,high-yield,and efficient cotton-sorghum intercropping systems,we conducted an experiment with sorghum and cotton intercropped by'Jiliang 2'and'Lu 6269'in Binzhou City,Shandong Province.Four intercropping patterns were adapted to analyze their effects on cotton agronomic traits,soil nutrient content,yield components,yield and economic benefits.The results showed that cotton-sorghum intercropping,compared with cotton monoculture,significantly increased cotton plant height,the number of fruiting branches and boll numbers,resulting in 0.73％to 6.13％increase in lint yield.Although fiber quality was decreased slightly,the soil available nutrient content was enhanced significantly.Among the three intercropping systems,the highest yield and economic benefits were observed in the one with 4-row cotton and 4-row sorghum.The lint yield in this pattern was 6.13％higher than that of cotton monoculture,and the economic benefits increased by 13.79％.Therefore,this pattern could be used in this area in order to improve yield potential in sorghum-cotton intercropping systems.
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