乙烯利 多效唑 吲哚乙酸复配对玉米生长生理及产量构成影响的研究

Study on the Effects of Ethephon Paclobutrazol and Indoloacetic Acid on the Growth Physiology and Yield Components of Maize

在高密度条件下,植物生长调节剂对玉米生长发育及产量的影响比较明显,各生长生理指标都明显高于低密度条件下的指标。复配型植物生长调节剂与单一植物生长调节剂相比,能有效地提高玉米功能叶片衰退期叶绿素含量,抵制玉米叶片中叶绿素含量下降的作用,延缓叶片衰老,有利于光合作用的进行。复配型植物生长调节剂与单一植物生长调节剂相比,能有效地提高玉米抗倒伏的能力。复配型植物生长调节剂处理明显比单一调节剂处理的叶面积指数大,到衰退期也保持较高叶面积指数,稳定期比较越长,越有利于光能的利用和提高玉米产量。高密度条件下喷施复配型植物生长调节剂能明显提高作物产量。

The results showed that： in the high-density conditions, plant growth regulators on corn growth and yield is more obvious, the physiological growth conditions are significantly higher than the target density. Compound-type plant growth regulator and a single plant growth regulators can effectively improve the recession in maize leaf chlorophyll content, resistance to corn leaf chlorophyll content decreased role, and delaying leaf senescence and photosynthesis. Compound-type plant growth regulators significantly higher than single regulators on leaf area index, the recession also maintained a high leaf area index, and stability as compared to the longer, the more favorable light use and maize yield. High-density compound under the conditions of spraying type of plant growth regulators can significantly increase crop yield.