施氮量对津原E28产量和品质的影响

以津原E28为供试品种,研究不同氮肥施用量对该品种水稻产量和稻米品质的影响。结果表明:随着施氮量的增加,水稻产量增加,结实率降低,粒长、宽、厚降低,但当施氮量达到240 kg/hm2以后,各处理组差异不显著;随着施氮量的增加,稻米蛋白质含量显著增加,食味值下降,直链淀粉含量、碘蓝值和透过率变化各处理间差异不显著;对淀粉RVA图谱分析显示,随着施氮量的增加,最高粘度、热浆粘度、冷胶粘度均逐渐下降,且差异显著,崩解值和消减值也逐渐下降,但差异不显著。

Effects of Nitrogen Fertilizer on Yield and Quality of Jinyuan E28

The Jinyuan E28 was selected as experimental materials and the effects of different nitrogen fertilizer amount on rice yield and quality were studied. The results show that with the increase of nitrogen amount, the rice yield increased, the seed setting rate decreased, the grain length, width and thickness decreased, but when the nitrogen fertilizer level reached 240 kg/ hm2, there was no significant difference among them. As nitrogen increased, the protein content of rice increased significantly, the taste value decreased, but there was no significant difference between the amylose content, iodine blue value and transmittance among different treatments. The analyses of starch RVA profiles show that with the increase of nitrogen, the peak viscosity, hot viscosity, cool viscosity of rice decreased gradually, and the difference among treatments were significant, and the breakdown value and setback value of rice gradually decreased, but the differences were not significant.