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为明确杂交籼稻新组合内5优8015的耐肥抗倒性,提出合理的氮肥施用方法,进行了不同氮肥施用量处理,研究了不同氮肥施用量对内5优8015在齐穗期后光合产物的积累、产量及其结构的影响。结果表明:内5优8015纯氮总施用量为187.5和225.0 kg/hm2处理的产量结构较优,齐穗期和成熟期干物质产量、齐穗至成熟期的干物质积累量最高,产量显著高于其它处理,但两者之间差异不显著;施氮量187.5 kg/hm2处理的叶面积指数适宜、叶片功能期和光合生产能力较优,植株抗倒性强。内5优8015在生产中以施氮量187.5 kg/hm2为最佳,既可降低氮素用量,又可获得高产。
In order to clarify the resistance to lodging of 5 You 8015 in a new indica hybrid rice combination, a reasonable application of nitrogen fertilizer was proposed and different nitrogen fertilizer rates were applied. The effects of different nitrogen rates on the photosynthate The accumulation, production and the impact of its structure. The results showed that the total yield of 187.5 and 225.0 kg / hm2 was the best, the dry matter yield of heading stage and mature stage, and the highest dry matter accumulation from heading to maturity, the yield was significant Higher than other treatments, but the difference between the two treatments was not significant. The leaf area index of 187.5 kg / hm2 nitrogen application was suitable, the leaf functional stage and photosynthetic production ability were superior, and the plant lodging resistance was strong. Within the 5 You 8015 in the production of nitrogen to 187.5 kg / hm2 is the best, both to reduce the amount of nitrogen, but also to obtain high yield.