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大田条件下,以4个糯玉米品种为试验材料,在等量施氮基础上,研究了不同施氮方式对糯玉米在最适采收期的鲜穗产量及子粒营养品质的影响。结果表明:施氮方式对糯玉米适宜采收期的影响不明显,对鲜穗产量及子粒中主要营养组分含量的影响显著。氮肥分基肥和拔节肥(NF2)2次施入有利于提高子粒淀粉和可溶性糖含量,改善食味品质;氮肥分基肥和抽雄肥(NF3)2次施入,不仅可以提高鲜穗产量,而且可提高子粒蛋白质和赖氨酸含量,有利于改善营养品质。
Under field conditions, four waxy corn varieties were used as experimental materials to study the effects of different nitrogen application methods on fresh ear yield and nutritional quality of waxy corn at optimal harvesting stage. The results showed that the effect of nitrogen application on the suitable harvest period of waxy corn was not significant, and the effect on the fresh ear yield and the content of the main nutritional components in the grain were significant. Nitrogen fertilizer basal application of fertilizer and jointing fertilizer (NF2) twice is conducive to raising the grain starch and soluble sugar content, improve the quality of eating; nitrogen fertilizer basal fertilizer and fertilization (NF3) twice, not only can improve the yield of fresh spike, but also Improve grain protein and lysine content, is conducive to improving nutritional quality.