中国稻米Issue(3)：17-22,6.DOI:10.3969/j.issn.1006-8082.2014.03.004
行株距比对超高产晚稻产量和上部三叶的影响
Effects of Row Spacing Ratio on Yields and Top Three Leaves of Super High-Yielding Late Rice
摘要
Abstract
In 2011 and 2012, a split-plot design experiment was carried on the effects of row spacing ratio (RS/IS) on yield and top three leaves of super high-yielding late rice Wufengyou T025 and Ganxin 688 in the same planting density of 31.20 ×104 hille/hm2. The results indicated that the yield of RS/IS 2.0 and RS/IS 2.8 of Ganxin 688 were significant higher than that of RS/IS 5.0 and RS/IS 1.3 in no nitrogen condition, while the yield of RS/IS 5.0 and RS/IS 2.0 were significant higher than that of RS/IS 2.8 and RS/IS 1.3 in nitrogen condition. The yield of RS/IS 1.3 of Wufengyou T025 were significant higher than that of RS/IS 5.0 and RS/IS 2.8 in no nitrogen condition, while the yield of RS/IS 5.0 were significant higher than that of RS/IS 2.0 and RS/IS 1.3 in nitrogen condition. In nitrogen condition, RS/IS 5.0 and RS/IS 2.0 improved total amount of nitrogen accumulation and apparent nitrogen utilization, and RS/IS 5.0 decreased nitrogen demand of grain. Whether nitrogen application or not, the basic angle, stretch angle and leaf length of top three leaves of two rice cultivar in RS/IS 2.0 were small.关键词
水稻/超高产/行/株距比/施氮量/上部三叶/产量Key words
rice/super high yield/row spacing ratio/nitrogen rate/top three leaves/yield分类
农业科技引用本文复制引用
林洪鑫,袁展汽,彭春瑞,肖运萍,刘仁根,汪瑞清..行株距比对超高产晚稻产量和上部三叶的影响[J].中国稻米,2014,(3):17-22,6.基金项目
国家科技支撑计划（2012BAD15B03）；江西省农科院青年创新基金(2010-CQN004) （2010-CQN004）
