不同施氮方式对玉米农艺性状及产量的影响

Effects of Different Nitrogen Application Methods on Agronomic Characters and Yield of Maize

科学施肥是实现玉米高产高效的重要保障。本研究通过田间试验,比较了5种施氮方式对玉米农艺性状及产量的影响。这5种施肥方式分别是无肥对照、高氮一炮轰(农民习惯)、一次性施用缓控释肥、底肥+1次追肥(拔节期)、和底肥+2次追肥(拔节期和抽雄期)。结果表明,两次追肥的增产效果好于一次追肥及施用缓控释肥,各处理均好于一炮轰施肥。与无肥对照相比,两次追肥、一次追肥、缓控施肥、高氮一炮轰的增产效果分别是64.4%、60.1%和58.7%、55.0%。建议提倡在玉米生育中、后期,采用两次追肥的方式,从而提高玉米产量。在没有条件追肥的地区,也可以考虑一次性施入缓控释肥。

Scientific feailization is an important guarantee for high yield of maize. In this study, through field experiment, the effect of 5 kinds of Nitrogen application methods on agronomic characters and yield of maize com- pared. This 5 kinds of application modes are no fertilizer control, high Nitrogen were （FFP）, a one - time application of controlled - release fertilizer, fertilizer ＋ 1, fertilizer （jointing stage）, and ＋ 2 （＇basal dressing at jointing and teaseling）. The results showed that, two fertilizer productions are better than a fertilizer and fertilizer slow release fer- tilizer, each treatment was better than a bombardment of fertilization. Compared with no fertilizer control, two dress＇- ing, dressing, controlled, high nitrogen fertilization were yield were 64.4%, 60.1% and 58.7%, 55%. Recom- mend advocate in late, maize growth, using two dressing method, so as to increase Ihe yield of maize. In the absence of conditions dressing area, can also be considered disposable fertilizer slow release fertilizer.