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为了摸清适合玉米的抗倒剂种类和喷施时期,以玉米品种新科19为材料,研究了5种抗倒剂(矮壮精、50%矮壮素、玉米小胖墩、矮丰·胺鲜乙烯利、玉米四宝)和5个喷施时期(七叶一心、八叶一心、九叶一心、十叶一心、十一叶一心)对新科19形态指标和产量的影响。结果表明,喷施抗倒剂较对照(喷清水)能明显降低新科19的株高、穗位高,缩短第3、5节间平均长度,增加第3、5节间平均茎粗,提高产量。其中喷施玉米四宝产量最高,分别比其余4种抗倒剂增产0.2%~0.9%;抗倒剂在玉米9片叶时喷施产量最高,比对照产量提高18.9%。
In order to find out the types of anti-down agents suitable for maize and the spraying period, five varieties of anti-reversion agents (short Zhuang fine, 50% CC, corn chubby pier, Ethephon, and corn four treasures) and five spraying periods (seven leaves one heart, eight leaves one heart, nine leaves one heart, ten leaves one heart, eleven leaves one heart) on the new Section 19 morphological indicators and yield. The results showed that spraying anti-retrogradation agent compared with the control (spraying water) could significantly reduce the Shin-19 19 plant height, ear height, shorten the average length between the 3rd and 5th, increase the average stem diameter between the 3rd and 5th and increase the yield . Among them, the highest yield of corn sibling was sprayed, which increased 0.2% ~ 0.9% more than the other 4 kinds of anti-reversion agents respectively. The anti-reversion agent sprayed the highest yield of 9 leaves of corn and increased by 18.9% than that of the control.