【摘要】 经过连续５年的实验，研究了北方稻区稻萍结合系统的不同结构对细绿萍产量和水稻产量的影响．结果表明．随着萍种用量的增加，水田中萍的产量也明显增加；尽管宽窄行交替的水稻栽培结构也有利于萍产量的增加，但这样的结构可导致水稻减产３～７％．在北方单季稻地区建议采用３０ｃｍ等行距的水稻栽培方式和３２５ｋｇ·ｈｍ－２（湿重）的萍接种量建立的稻萍结合系统．更多还原

【Abstract】 The effects of different structures of rice-Azolla combination system on rice and Azolla productions are studied within a 5-years experimental period. The results show that Azolla production on rice fields is significantly increased with increasing Azolla inoculation.Though the Azolla production is increased on the fields with alternating wide and narrow row rice plantings, the rice yield is decreased by 3～7%. The structure with an equal row rice planting of 30 cm and an Azolla inoculation rate of 325 kg·hm-2 (wet weight) is recommended for developing rice- Azolla combination system in northern China.更多还原