加拿大一枝黄花与玉米互作影响的研究

Study on the interaction of Solidago canadensis and corn growth

加拿大一枝黄花不同密度对玉米生长影响的研究表明:随密度的增加除玉米株高的增长率增加外,玉米秸秆鲜重的减退率也在增加,各密度处理间均有显著差异。玉米每株结穗数和穗重与加拿大一枝黄花的密度呈负相关,各处理与对照均有显著差异。不同密度加拿大一枝黄花对自身株高的影响随着密度的增加而增加,对自身鲜重的影响随着密度的增加而下降。玉米对加拿大一枝黄花的发生密度、鲜重和株高同样具有明显的影响,但随着时间的延长其影响力逐渐减弱。

Field experiments with corn were carried out under various densities of Solidago canadensis to study the interaction of 5.canadensis and corn growth.The results showed that with the density of S.canadensis increasing the growth rate of corn plant height increased,the decrease rate of fresh corn stalk weight also did,and there were significant differences between different-density treatments. The ear number per corn plant and the ear weight were negatively correlated with the density of S.canadensis,and there were significant differences between different-density treatments and CK. The effect of S.canadensis density on its own plant height enhanced with the density increasing but that on its own fresh weight decreased with the density increasing.Also the corn plants had an obvious influence on the density,fresh weight and plant height of S.canadensis but the influence gradually declined with time.