不同氮肥施用量对甘蔗的影响

Effects of Nitrogenous Fertilizer Rate on Sugarcane

[目的]为进一步摸清甘蔗氮肥需肥规律,完善其施肥参数和测土配方施肥技术指标体系。[方法]采用甘蔗氮肥不同施用量田间试验方法。[结果]各处理的农艺性状均比空白处理的好,且在一定范围内随着氮肥施用量的增加而增加。[结论]成熟期甘蔗干物质茎的全氮含量和产量在一定范围内随施氮水平的提高而增加,干物质叶的全氮含量则随施氮水平的提高而减少。

[Objective]The research aimed to further ascertain the sugarcane nitrogen fertilizer demanding regularity,and improve the fertilization parameters and formula fertilization by soil testing technology index system. [Method] Test method was different application rate of nitrogen fertilizer in sugarcane field. [Result] Agronomic traits of each treatment were better than that of blank processing,and within a certain range with the increase of the nitrogen application increased. [Conclusion]Total nitrogen content and yield of dry matter in sugarcane stemmature period increased in a certain range with nitrogen increase,and the total nitrogen content of dry matter of leaves was increased with the increase of nitrogen level.