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水稻试验上选用3个氮肥水平和3个栽培密度,探讨肥密互作对2个水稻品种的影响。结果表明在高氮肥条件下,2个水稻品种低密度处理产量相对较高,说明高氮肥用量下稀植能获得相对高的产量,而密度越高则产量越低,原因是施肥量大使稻株贪青晚熟,籽粒饱满程度降低。在中、低氮肥用量条件下,2个水稻品种高密度处理产量均较高,而中等肥力下产量为3种氮肥处理中最高。在不同处理下,辽优5218和辽粳101垩白度和垩白粒率差异均未达显著水平,说明肥密互作对2个品种外观品质影响不显著,但对内在品质如蛋白质含量和食味值方面影响较显著,对直链淀粉含量差异影响未达显著水平。
Three nitrogen fertilizers and three planting densities were selected for rice experiment to investigate the effects of fertilizing and fertilizing on two rice cultivars. The results showed that under the condition of high nitrogen fertilizer, the yield of two rice cultivars at low density was relatively high, indicating that the relatively high yield of plantation could be obtained under the high nitrogen application, but the lower the yield at the higher density. Grebe young and late, reduce the full extent of the grain. Under middle and low levels of nitrogen fertilizer, the yield of two rice cultivars with high density was higher, while the yield of medium fertility was the highest among the three kinds of nitrogen fertilizers. Under the different treatments, the differences of chalkiness degree and chalky grain rate between Liaoyou 5218 and Liaojing 101 were not significant, which indicated that the effect of fertilization and close interaction on the appearance quality of two cultivars was not significant, but the intrinsic quality such as protein content and taste The value of more significant impact on the amylose content difference has not reached a significant level.