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三、繁殖技术（一）直播1、小粒种子的特点百脉根、美国苜蓿、鸭茅、白三叶、无芒雀麦、草地早熟禾均为小粒种子，有的甚至是极为细小的、肉眼难分辨。千粒重无芒雀麦4克，美国苜蓿1．4～1．6克，百脉根1～1.2克，鸭茅1克，白三叶0．5～0．7克，草地早熟禾0．2～0．25克。由于?
Third, the breeding technology (A) Live 1, the characteristics of small seeds Lotus root, the United States alfalfa, Dactylis, white clover, brome grass, Kentucky bluegrass are small seeds, and some even very small, Difficult to distinguish. 1000 grain weight of Brome 4 grams, 1.4-1.6 grams of American alfalfa, Lotus corniculatus 1 to 1.2 grams, 1 grams of Dactylis, white clover 0.5 to 0.7 grams, Kentucky bluegrass 0.2 ~ 0.25 grams. due to?