农用稀土对鲜食糯玉米群体的光合特性及品质的影响  

Effects of Rare Earths in Agriculture on Photosynthetic Characteristics of Canopy and Quality of Waxy Corn

作　　者：余海兵[1] 任向东 刘正[1] 王歆[1] 王波[1] 

机构地区：[1]安徽科技学院植物科学学院,安徽凤阳233100 [2]安徽省黄山市农科所,安徽黄山242700

出　　处：《稀土》2012年第6期41-46,共6页Chinese Rare Earths

基　　金：安徽省科技厅农业成果转化基金(09150306012);安徽省教育厅重点自然基金(KJ2008A079);安徽科技学院稳定人才基金(ZRC2010264)

摘　　要：在CK和农用稀土T1、T2、T3、T4、T5的处理下,研究了其对鲜食糯玉米群体叶面积指数、群体平均叶簇倾斜角、冠层内有效辐射、透光率、群体光合速率、植株形态特征及品质的影响。结果表明,在400 mg.kg-1的农用稀土作用下,在授粉后各个生育期的群体不同叶位叶面积指数都为最大;群体平均叶簇倾斜角最小,且与其它处理相比,呈现显著性;在授粉后18 d时,群体冠层内有效光合辐射达最大,差异显著;授粉后群体冠层内透光率随着生育期推进先上升后下降;群体光合速率差异不明显。鲜食糯玉米蒸煮品质总评分影响从大到小排列:T1=T3>CK>T2=T4>T5。With different concentration of rare earths in agriculture （ T1, T2 , T3, T4, T5 , CK）, the effects of rare earths on average foliage tilt in the group, PAR,light transmission, CAP, the characteristics of morphology and qulity of Waxy Corn 2062 were investigated. The results were as follows ： when concentration of rare earths was 400 mg·kg-1, the LAI of different posi- tion was the biggst at the different growth stages after pollination; the average foliage tilt in the group of waxy corn was the smallest and showed significant differences compared with other trestment;in 18 days after pollination, PAR reached the highest value ; light transmittance through canopies of waxy corn community increased firstly and then decreased with growth after pollination. The difference of CAP was not obvious. The arrangement of fresh - eating waxy corn cooking quality from large to small by total score： T1 = T3 〉 CK 〉 T2 = T4 〉 T5.

关 键 词：糯玉米 农用稀土 光合特性 蒸煮品质 

分 类 号：S31[农业科学—作物栽培与耕作技术]