在山东禹城大田条件下，以郑单958和中单808为试验材料，研究了玉米8展叶期喷施不同浓度玉黄金对与抗倒伏有关的若干性状及产量的影响。结果表明，喷施玉黄金具有降低玉米株高和穗位高以及增加茎粗、减小叶面积的显著效应，对玉米产量具有明显的影响，喷施浓度适宜能达到增产效果。两个供试品种喷施玉黄金的适宜浓度不同，但均是通过增加穗粒数来实现增产。

Effects of spraying Yu-Huang-Jin(YHJ) which is a kind of plant growth regulators at the 8th leaf stage with different spraying rates on several traits related to lodging resistance and yield of maize were studied, using two types of maize hybrids, Zhengdan 958 and Zhongdan 808, under field conditions in Yucheng county, Shandong province. The results showed that the plant height, ear height and maximum leaf area per plant were reduced remarkably, and stalk diameter was improved evidently by spraying YHJ. Effects of spraying YHJ on yield showed positive as well as negative results, and the yield can be increased only in the case of spraying appropriate concentration of YHJ, both the yield of two hybrids were increased by improving numbers of grain per ear, although the appropriate spraying concentration were different between them.

公益性行业科研专项“农业气候资源评价与高效利用技术研究”[GYHY(QX)2007-6-30]