Description : Alfa-Alfa integrated in the no-till system. As the crop remains in place during 3-4 years, various cover crops are intercropped o keep enough residue cover. EPAGRI.

• 免耕种植的紫花苜蓿作物残茬可以在田里保持3－4年，不同作物间作提供了足够的残茬覆盖。