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光质与补光对水稻幼苗生长及光合速率的影响
付传明;黄宁珍;赵志国;唐凤鸾;黄志民;   
1.广西壮族自治区、中国科学院广西植物研究所;2.广西科学院 广西桂林541006;3.广西桂林541006;4.南宁530007
摘要:
测定水稻成龄离体叶片在波长380~800nm下的透射率,推算其吸收光谱;在培养室内,观测水稻幼苗在蓝(475±5nm)、黄(585±5nm)、红(660±5nm)色的半导体(LED)和普通日光灯下的生长状况,每天照光12h;同时,在大棚中将刚萌发的水稻幼苗白天自然日照,每晚(18:00~24:00)人工补蓝、红、黄、白光各0、2、4、6h,定期观测其生长情况,在补光50d后测成龄叶片的光合曲线。结果发现:水稻叶片在波长400~500nm之间及680nm附近有较强吸收;在不同光质下进行培养,单波蓝光对水稻幼苗的生长最好;补光对水稻幼苗生长均有促进作用,其中补白光4h效果最明显,其次是补黄光2h;...
关键词:  水稻    光质    补光    生长发育    光合作用
DOI:
分类号:
Fund project:广西科技攻关项目(桂科攻0330003-1)~~
  
Abstract:
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