摘要
以先玉335为试验材料,对比研究高产栽培和一般栽培灌浆期群体内光和CO2的分布特征。结果表明:高产群体中层有较高的光强,高产群体冠层截获光的能力大于对照,在穗位处截获率达到94.67%,120 cm以上高产群体的叶面积指数大于对照群体,高产群体内CO2浓度上午大于对照,下午小于对照。高产玉米群体的光能利用率较高,光合能力较强,从而达到高产的目的。
Taking Xianyu 335 as test material,through the contrast of high yield cultivation and general cultivation,the distribution characteristics of light and CO2 in the intragroup of filling stage was studied in this paper.The results showed that the neighborhood light interception ratio in each layer of high-yielding maize group was higher than control,interception rate in the ear reach achieves 94.67%.The leaf area index of highyielding group was larger than control,and the CO2 concentration was higher in the morning and lower in the afternoon than that in the control.The group of high-yielding maize had higher energy efficiency,stronger photosynthetic capability so as to achieve hith production purposes.
出处
《现代农业科技》
2010年第8期46-47,50,共3页
Modern Agricultural Science and Technology
关键词
玉米
光量子密度
CO2浓度
分布特征
maize
photons density
CO2 concentration
distribution characteristics
