湿地科学与管理
濕地科學與管理
습지과학여관리
WETLAND SCIENCE & MANAGEMENT
2015年
1期
39-42
,共4页
尹传宝%张翠英%申云飞%王龙%刘自强%张敏%沈应时
尹傳寶%張翠英%申雲飛%王龍%劉自彊%張敏%瀋應時
윤전보%장취영%신운비%왕룡%류자강%장민%침응시
菹草%石芽%萌发率%悬浮物
菹草%石芽%萌髮率%懸浮物
저초%석아%맹발솔%현부물
Potamogeton crispus%Turion%Germination rate%Suspended solids
研究了光照和温度对菹草石芽萌发的影响及菹草的生长机理。结果表明:①在模拟秋冬季温度条件下不同光照强度对石芽萌发率的影响无规律性,即光照并未对菹草石芽的萌发起促进作用;②石芽在一定时间的低温作用后,恢复常温使石芽的萌发速度和萌发率明显提高,说明石芽的萌发受温度的影响,这也更好地解释了菹草的越冬生长习性及春季部分水体菹草大规模爆发的现象;③石芽随水面波动可吸附大量悬浮物,一般5-7天即可增加足够的重量下沉至水体底部,石芽吸附的悬浮物含有一定的营养成分,能促进石芽的萌发。石芽的萌发机制可为菹草石芽繁殖的影响因素研究提供依据,对栽培菹草具有重要的实践意义。
研究瞭光照和溫度對菹草石芽萌髮的影響及菹草的生長機理。結果錶明:①在模擬鞦鼕季溫度條件下不同光照彊度對石芽萌髮率的影響無規律性,即光照併未對菹草石芽的萌髮起促進作用;②石芽在一定時間的低溫作用後,恢複常溫使石芽的萌髮速度和萌髮率明顯提高,說明石芽的萌髮受溫度的影響,這也更好地解釋瞭菹草的越鼕生長習性及春季部分水體菹草大規模爆髮的現象;③石芽隨水麵波動可吸附大量懸浮物,一般5-7天即可增加足夠的重量下沉至水體底部,石芽吸附的懸浮物含有一定的營養成分,能促進石芽的萌髮。石芽的萌髮機製可為菹草石芽繁殖的影響因素研究提供依據,對栽培菹草具有重要的實踐意義。
연구료광조화온도대저초석아맹발적영향급저초적생장궤리。결과표명:①재모의추동계온도조건하불동광조강도대석아맹발솔적영향무규률성,즉광조병미대저초석아적맹발기촉진작용;②석아재일정시간적저온작용후,회복상온사석아적맹발속도화맹발솔명현제고,설명석아적맹발수온도적영향,저야경호지해석료저초적월동생장습성급춘계부분수체저초대규모폭발적현상;③석아수수면파동가흡부대량현부물,일반5-7천즉가증가족구적중량하침지수체저부,석아흡부적현부물함유일정적영양성분,능촉진석아적맹발。석아적맹발궤제가위저초석아번식적영향인소연구제공의거,대재배저초구유중요적실천의의。
Influence of light and temperature on turion germination of Potamogeton crispus and the growth mechanism of P. crispus were studied. Results showed that: 1) In simulated of autumn and winter temperature conditions the effects of different light intensities on germination rate of turions of P. crispus displayed no regularity, indicating that light did not play a catalytic role in turion germination 2) Treated with low temperature for a certain time, germination speed and germination rate were evidently increased by restoring the normal temperature, suggesting that turion germination was influenced by temperature, which provided a better explanation for the winter growth habit and the phenomenon of outbreak of P. crispus in spring;3) The of P. crispus lfoating in the water adsorbed a large amount of suspended solids, usually 5-7 days to add enough weight to sink to the bottom of water bodies, the adsorbed suspension containing certain nutrients can promote the germination of turions. The mechanism of turion germination provides a basis for studies of factors influencing reproduction of P. crispus and is of important practical significance for cultivation of P. crispus.