Advantages of Legumes 。 High quality forage Extend the grazing season comparison to warm season grasses common use is overseeding Capable of biological nitrogen fixation amount of N fixed depends on many factors Many annual legumes can be managed for ■RAGE reseeding Copyright reseved by Long M College of animal science,Northwest Agriculture Forestry University 西北农林科技大学动物科技学院草业科学系
__________________________________________________________________ College of animal science, Northwest Agriculture & Forestry University 西北农林科技大学动物科技学院草业科学系 Copyright reseved by Long Mingxiu Advantages of Legumes • High quality forage • Extend the grazing season – comparison to warm season grasses – common use is overseeding • Capable of biological nitrogen fixation – amount of N fixed depends on many factors • Many annual legumes can be managed for reseeding
Legumes description annual,biennial,and perennial 年生，两年生和多年生 ● Pods豆荚dehisce张裂on both sutures(缝 隙) high in crude protein粗蛋白 ● higher digestibility消化率than grasses by ruminants.反刍动物 higher intakel吸收率than grasses by F■RAG日 ruminants 东林界 Copyright reseved by Long Miitg College of animal science,Northwest Agriculture Forestry University 西北农林科技大学动物科技学院草业科学系
__________________________________________________________________ College of animal science, Northwest Agriculture & Forestry University 西北农林科技大学动物科技学院草业科学系 Copyright reseved by Long Mingxiu Legumes description • annual, biennial, and perennial 一年生，两年生和多年生 • Pods豆荚 dehisce张裂 on both sutures（缝 隙） • high in crude protein 粗蛋白 • higher digestibility消化率 than grasses by ruminants反刍动物 • higher intake吸收率 than grasses by ruminants
Fabaceae family -legumes 600 genera(属)-12,000 species(种) more narrow range of adaptation than grasses require more management than grasses 豆科植物共有600个属12,000 种，比禾本科适应范围窄，需要 更好的管护。 ■RA Copyright reseved by Long M College of animal science,Northwest Agriculture Forestry University 西北农林科技大学动物科技学院草业科学系
__________________________________________________________________ College of animal science, Northwest Agriculture & Forestry University 西北农林科技大学动物科技学院草业科学系 Copyright reseved by Long Mingxiu Fabaceae family legumes • 600 genera（属） – 12,000 species（种） • more narrow range of adaptation than grasses • require more management than grasses • 豆科植物共有600个属12，000 种，比禾本科适应范围窄，需要 更好的管护。 *
Nitrogen fixation nodules on berseem clover. 固氮结节 .In legumes the Rhizobium bacterium根 瘤菌exists within a specialised root structure called a nodule.(结节 F■▣RAGE A legume cover crop can provide sufficient nitrogen for the cash crops that follow it. Copyright reseved by Long Miitg College of animal science,Northwest Agriculture Forestry University 西北农林科技大学动物科技学院草业科学系
__________________________________________________________________ College of animal science, Northwest Agriculture & Forestry University 西北农林科技大学动物科技学院草业科学系 Copyright reseved by Long Mingxiu Nitrogen fixation nodules on berseem clover. 固氮结节 •In legumes the Rhizobium bacterium根 瘤菌 exists within a specialised root structure called a nodule. (结节 ) A legume cover crop can provide sufficient nitrogen for the cash crops that follow it
Biological Nitrogen Fixation Legume plants and Rhizobium bacteria team up to remove N from the air Nodules form on legume roots when this system is working 要 F■▣RAGES 界为 College eseved by Long M restry University
__________________________________________________________________ College of animal science, Northwest Agriculture & Forestry University 西北农林科技大学动物科技学院草业科学系 Copyright reseved by Long Mingxiu Biological Nitrogen Fixation • Legume plants and Rhizobium bacteria team up to remove N from the air • Nodules form on legume roots when this system is working