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以超级稻丰两优香1号为材料,比较研究了3种施氮水平和3种基蘖肥与穗肥比例共9种氮肥运筹对其生长特性和产量及其构成因素的影响。结果表明:在一定氮肥施用水平之内,水稻产量随施氮量的增加而增加,但超过一定施氮量后增加并不明显,氮素适当后移也有利于产量的提高;氮肥运筹方式对水稻产量构成因素、成穗率、叶面积指数和干物质生产特性等有明显影响。施氮量225 kg/hm~2、基蘖肥与穗肥比例为6∶4的氮肥运筹方式可作为丰两优香1号丰产高效栽培的推荐氮肥运筹模式。
Using super rice Liangyougyou 1 as material, the effects of three nitrogen fertilization treatments on growth characteristics, yield and its components were compared among three nitrogen rates and three ratios of basic tiller fertilizer to panicle fertilizer. The results showed that within a certain nitrogen application level, the yield of rice increased with the increase of nitrogen application rate, but it did not increase obviously after a certain amount of nitrogen was applied. Rice yield components, spike rate, leaf area index and dry matter production characteristics have a significant impact. Nitrogen fertilizer application rate of 225 kg / hm ~ 2 and ratio of base tiller fertilizer to panicle fertilizer of 6: 4 could be used as recommended nitrogen fertilizer operation mode for high yield and high efficiency of Fengliangyou 1.