Analysis of High and Stable Yield and Adaptability of Different Soybean Varieties under Intercropping Conditions in Walnut Orchards
To screen out soybean varieties with high and stable yields and good adaptability under suitable intercropping conditions in walnut orchards,in order to improve the sowing area,yield,and economic benefits of soybeans in the Shangluo area.This study com-prehensively evaluated the high and stable yield and adaptability of six soybean varieties using methods such as significant differences,coefficient of variation,regression coefficient,high stability coefficient,and cluster analysis.The results showed that Shaan kendou 4,Shaandou 125,and Qihuang 34 were three varieties with high and stable yields and good adaptability under intercropping conditions in walnut orchards.Group I(Shaankendou 4,Shaandou 125,and Qihuang 34)had average plant height of 66.10 cm,average pods per plant of 81.53,average grains per plant of 152.61,and average per hundred seeds weight of 28.45 g,Soybean varieties and simi-lar varieties with average growth period of 133.67 days had certain advantages under intercropping conditions in the Shangluo walnut nursery.Therefore,Shaankendou 4,Shaandou 125,Qihuang 34,and similar varieties can be appropriately applied as high-yield and stable soybean varieties in walnut orchards in similar ecological areas of Shangluo.This study provides a theoretical reference for the selection of soybean varieties under intercropping conditions in the Shangluo walnut nursery.