【摘要】 通过氮肥用量试验 ,探讨了杂交稻汕优 5 5 9在地膜旱管栽培条件下 ,不同氮肥施用量对群体发育、产量形成的影响 ,分析表明该试验条件下最适氮肥施用量为 2 5 1.4kg/hm2 纯氮 ,为大面积水稻地膜旱管栽培科学施肥 ,以肥调控群体结构提供了科学依据。更多还原

【Abstract】 Different N-fertilizer supplying amount treatments in dry cultivation covered with plastics on shanyou 559,a kind of hybrid rice,were conducted to investigate the effect of N-fertilizer supplying amount on population quality and yield formation.Results showed:The most appropriate N supplying amount was 251.4 kg/hm 2. The result offered scientific basis for fertilizer supplying and fertilizer control of population in dry cultivation covered with plastics.更多还原