不同施氮水平对水稻产量、品质的影响.pdfVIP

中国农学通报 2010,26(14):222-225 Chinese Agricultural Science Bulletin 寒地水稻不同施氮水平对水稻产量、品质的影响 姜 辉，王秋菊，孟 英，孙士臣 （黑龙江省农科院耕作栽培研究所，哈尔滨150086） 摘 要：采用单因素重复试验，研究不同施氮水平对龙稻5 号和东农428 产量及品质的影响。结果表明： 不同施氮水平对龙稻5 号和东农428 的平方米穗数、穗粒数、空瘪粒、千粒重及产量影响差异显著，龙稻 2 5 号的平方米穗数随施氮量的增加而增加，穗粒数、千粒重、产量在施氮水平0~ 135 kg/hm 范围内随施氮 2 量的增加而增加，但施氮量达到175 kg/hm 时，穗粒数下降，空瘪粒高；东农428 也具有相同的变化趋 势。蛋白质含量、直链淀粉含量随施氮量增加而增加；但东农428 直链淀粉含量在施氮量为175 kg/hm2 2 时含量下降。龙稻5 号和东农428 的糙米率、精米率和整精米率以135 kg/hm 施肥水平最高。龙稻5 号 垩白度和垩白率处理间差异显著，东农428 胶稠度处理间差异显著，随施氮水平的提高，胶稠度降低。 关键词：水稻；氮肥；产量；品质 中图分类号：S511 文献标志码：A 论文编号：2010-0264 Study of Different Nitrogen Level on Rice Yield and Quality at Cold Area JiangHui, Wang Qiuju, MengYing, Sun Shichen (Tillage and Cultivation Institute of Heilongjiang Academy of Agricultural Sciences, Harbin 150086) Abstract: The effect of different nitrogen levels on rice yield and quality of Longdao5 and Dongnong428 was studied through single factors experimental design. The results showed that the differences were significant by different nitrogen levels effect on rice panicle per square meters, grains per spike, air shriveled grain, 1000-grain weight and yield. The panicle per square meters of Longdao5 was increased with the increases of 2 nitrogen. During the nitrogen level 0~135 kg/hm , the number of grains per spike, 1000-grain weight and yield was increased with the amount of nitrogen increases, whil