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采用小区和大田对比试验,研究了玉米健壮素对玉米株高和产量的影响等.3年试验结果表明:喷施健壮素能使植株矮化、健壮、增根、抗倒和增产.其最佳喷施适期为玉米雌穗小花分化末至抽雄始期,即田间植株抽雄率为2%～3%时.每公顷用健壮素15支(每支30ml,兑水15～20kg),用背负式喷雾器均匀喷施于玉米植株上部叶片,能明显抑制茎节伸长,降低植株高度和提高玉米产量等.3年不同密度的处理株高分别比对照降低44.48cm、51.34cm、54.84cm、58.22cm、60.05cm,控长率为18.77%、20.88%、21.53%、22.07%、22.32%;每公顷增产玉米875.40kg、1080.75kg、1368.75kg、1384.35kg、1503.90kg,增产率为13.77%、15.66%、16.98%、16.62%、17.46%.
The plot and field experiments were conducted to study the effects of Maize hormone on the plant height and yield of maize.The results of 3 years showed that the application of Juvenile hormone could make the plant dwarf, robust, rooted, lodging-resistant and yield-increasing Spraying suitable period for the corn spikelets of corn from the end of the differentiation to the beginning of tassel, that is, when the rate of tasselling plants in the field of 2% to 3% .Health with 15 per hectare (each 30ml, watered 15 ~ 20kg) Sprayer sprayed evenly on the upper leaves of maize plants significantly inhibited stem elongation, decreased plant height and increased maize yield, etc. The plant height at three years of treatment decreased by 44.48cm, 51.34cm, 54.84cm, 58.22 cm, and 60.05cm respectively. The yield of corn was 875.40kg, 1080.75kg, 1368.75kg, 1384.35kg and 1503.90kg per hectare, yield increase rate was 13.77% and 15.66 %, 16.98%, 16.62%, 17.46%.