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进行了两年的温室试验以明确氮素对棉花结铃、棉铃发育和纤维品质的影响。棉株结铃和棉铃成熟期的叶片含氮量变幅为最低施氮处理的1％至最高施氮处理的3％。氮素胁迫降低了棉株叶面积、铃数和单铃重,且单株铃数的下降程度大于铃重。氮素对棉铃成熟期没有影响。氮素胁迫下,棉铃在主茎和果枝上所处的节位影响到单铃纤维重。但是,氮素胁迫只影响纤维品质性状中的纤维齐整度。第二果节棉铃的纤维麦克隆、长度、强度和整齐度值均低于第一果节的,但纤维伸长率较高。
Two years of greenhouse experiments were conducted to clarify the effect of nitrogen on cotton bolls, boll development and fiber quality. The bolls of bolls and cotton bolls at the ripening stage varied from 1% of the lowest nitrogen application to 3% of the highest nitrogen application. Nitrogen stress reduced leaf area, number of bolls and single boll weight, and the number of bolls per plant decreased more than boll weight. Nitrogen had no effect on boll maturity. Under nitrogen stress, the boll node on the main stem and fruiting branch affected the boll weight. However, nitrogen stress affects only fiber uniformity in fiber quality traits. The second fruit of cotton boll fiber micelles, length, strength and uniformity values were lower than the first section, but the fiber elongation higher.