精品文档---下载后可任意编辑不同施氮时期对夏玉米植株抗倒伏能力的影响的开题报告摘要：夏玉米的倒伏是一种常见的现象，施氮时期对夏玉米植株抗倒伏能力的影响一直备受关注。本文旨在探讨不同施氮时期对夏玉米植株抗倒伏能力的影响，并确定最佳施氮时期。为此，我们将在试验田中进行两个不同施氮时期的比较实验，其中一组在播种前进行氮肥施用，另一组在玉米 8 叶期进行氮肥施用。比较两组的生长情况、倒伏程度以及产量。通过分析结果，得出不同施氮时期对夏玉米植株抗倒伏能力的影响，为推举最佳施氮时期提供科学依据。关键词：夏玉米、施氮时期、抗倒伏能力、产量Abstract:The lodging of summer maize is a common phenomenon, and the effect of nitrogen application timing on the lodging resistance of summer maize plants has long been a concern. This paper aims to explore the effect of nitrogen application timing on the lodging resistance of summer maize plants and determine the best nitrogen application timing.To achieve this, we conducted a comparative experiment of two different nitrogen application timings in the experimental field. One group was applied with nitrogen fertilizer before sowing, and the other group was applied with nitrogen fertilizer at the 8-leaf stage of maize. We compared the growth, lodging level, and yield of the two groups. Through analyzing the results, we obtained the effect of different nitrogen application timings on the lodging resistance of summer maize plants, and provided a scientific basis for recommending the best nitrogen application timing.Keywords: summer maize, nitrogen application timing, lodging resistance, yield.
