Studies on mechanism of enhancing the chilling resistance of annual ryegrass by exogenous nitric oxide DairyMod Validation and Application for Lolium multiflorum Production in Sichuan Plain Plant nitrogen content of annual ryegrass and spectral reflectance response to nitrogen application level The genetic variation revealed by SSR markers in crossbreeding groups of annual ryegrass after continuous mass selection Genetic Polymorphism of Ryegrass Cultivars Detected by RAPDs A Study on the Efficient Forage Production System in the Cropping Areas of Southwestern Sichuan Province Study on Companion Crop Selection and Its Sowing Rate for Alfalfa Seeding in Autumn in Hilly Area of South Jiangsu Province A Study on Complementary Forage System of Supplementing Annual Ryegrass to Warm-Season Grass Pasture A preliminary study on fermentation technology in the manufacture of fuel alcohol using annual ryegrass