不同玉米品种去留分蘖对生物学性状、产量及产值的影响

Effects of Tiller Removal on Biological Traits,Yield and Economic Out put of Different Maize Varieties

通过10个玉米品种分别进行去除分蘖与保留分蘖的试验,对玉米品种分蘖率、生物学性状、产量及产值等进行研究,结果表明,不同玉米品种植株分蘖数量差异明显。同一玉米品种去除分蘖与保留分蘖对植株抽雄和吐丝的生育过程没有影响,对叶片SPAD值、叶面积系数、干物质重、产量及构成因素均无显著影响,但是玉米去分蘗后的亩产值明显小于留分蘖的亩产值。本项研究结果为减少玉米生产环节投入,提高玉米生产效率提供有力的理论支撑。

The tiller rate, biological traits, yield and economic output of ten maize varieties was studied by the exper- iment of removing tillers and tillers retention. The results show that there was significant differences of the tiller numbers of different maize varieties. Removing tillers and tillers retention on the same maize varieties has no effect at the anthesis and silking growth stage, and it has no significant influence on the SPAD value of leaves, leaf area in- dex, dry matter weight, yield and composition factors. However, the output value per 667 m2 of tiller removal was ob- viously smaller than tillers retention. The results of this study provide a strong the theoretical support to reduce the input of maize production and improve the efficiency of maize production.