高产高蛋白饲草满江红 (Azolla imbricata)放养技术研究初报

Cultivation Techniques of Azolla with High Yield and Protein

满江红属蕨类植物 ,以营养体的侧枝断离无性繁殖方式为主 ,粗蛋白、赖氨酸、磷、粗脂肪含量均高于紫花苜蓿。研究结果表明 ,群体延续时间为 7d时 ,繁殖系数最高 ,在西北地区 4～ 9月份的适宜生长季节 ,采用薄膜微水放养技术 ,每公顷水面生产鲜草约 450 t,折合干重 45t,粗蛋白 1 1 .2 5t。

Azolla, which propagates with lateral branch breaking, belongs to pteridophyte and contains higher nurient contents of forage. Research results show that maximum tate of population propagation of Azolla is achieved by a seven day growth intervals each harvest. Through a limited water supply techniques of plastic film protecting water leakage, expected dry biomes of 45 t/hm 2 and crude protein of 11.25 t/hm 2 may be obtained in the suitable growth seasons from April to September. Thus, Azolla is considered as a good quality forage and pasture to develop.