Screening experiment of intercropping GT29 and soybean varieties.

【Objective】 Effects of intercropping on growth dynamic,accumulation and distribution of dry matter in soybean were studied to screen out the soybean varieties suitable for intercropping with GT 29 in order to provide references for extension of GT 29 and rational intercropping soybean.【Method】 Six soybean varieties namely Guizao 1,Guizao 2,Guichundou 103,Guichun 1,Guichundou 1 and Guichun 8 were single-row intercropped with GT 29,respectively at the same time.During the growth of soybean,plant height,leaf area,dry matter accumulation in different parts were periodically surveyed,node pods,single pod weight,100-seed weight and yield per plot at harvesting stage were measured.【Result】 Guichun 8 was the tallest and had the largest leaf area,and it also had more dry matter accumulation and more node pods per plant.Guizao 2 had short growth period and matured earlier.It also had many node pods per plant and dry matter accumulated fast.Guichundou 1 was heavier in single pod weight and 100-seed weight,and it was the best one in commodity traits.【Conclusion】 Guichun 8,Guizao 2 and Guichundou 1 are more suitable for intercropping with GT 29.Guichun 8 is apt to be harvested for fresh food.Guizao 2 is suggested to be harvested during maturing period.Guichundou 1 has the best commodity traits,but its yield only reached middle level.