不同生育时期喷施达尔丰对玉米生长发育的影响

Effect of Spraying DA ER FENG at Different Growing Stages on the Growth of Maize

以鲁玉10号为试验材料,在济南东郊进行了玉米不同生育时期喷施植物生长调节剂“达尔丰”试验.结果表明:在10片展开叶时叶面喷施0.2%的达尔丰,可有效地防止倒伏、增加穗粒数和千粒重,籽粒产量提高14.7%,增产显著.

The experiment was conducted in the east suburb of Jinan. The result showed that grain yield increased significantly by 14. 7% when maize canopy was sprayed with 0. 2% DA ER FENG solution at the 10th leaf (lamina expansion) stage. It also raised grain yield at the 10th to the 14th leaf stage,but the increment was not significant. The principal reason for the increment was that DA ER FENG efficiently prevented lodging and increased kernels per ear and thousand grain weight. Therefore,it was considered as one of the effective measures to abtain high and stable yield.