北方稻田生态系统研究　Ⅰ．稻萍结合系统的结构研究  

Rice field ecosystems in northern China Ⅰ. Structural study of rice-Azolla combination systems

作　　者：苏凤岩[1] 闻大中[1] 徐卿德[1] 李维光[1] 杨玉兰[1] 

机构地区：[1]中国科学院沈阳应用生态研究所

出　　处：《应用生态学报》1996年第2期179-184,共6页Chinese Journal of Applied Ecology

基　　金：中国科学院"八五"重大项目

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．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.

关 键 词：水稻 稻田生态系 稻萍结合 结构 

分 类 号：S511.01[农业科学—作物学]