氮肥缓速配施对机插杂交稻氮素利用特征的影响

吕腾飞,谌洁,马鹏,代邹,杨志远,徐徽,郑传刚,马均

Effects of Combined Application of Slow Release Nitrogen Fertilizer and Urea on the Nitrogen Utilization Characteristics in Machine- Transplanted Hybrid Rice

LÜ TengFei,SHEN Jie,MA Peng,DAI Zou,YANG ZhiYuan,XU Hui,ZHENG ChuanGang,MA Jun

表9 杂交稻氮素吸收与产量的相关系数

Table 9 Correlation coefficient between nitrogen uptake and yield in hybrid rice (n=16)

项目 Item 氮积累量 N accumulation 氮积累速率 N accumulation rate 拔节—抽穗氮积累量 N accumulation from elongation to heading 抽穗—成熟氮转运量 N translocation from heading to maturity 拔节期 Elongation 抽穗期 Heading 成熟期 Maturity 播种—拔节 Sowing to elongation 拔节—抽穗 Elongation to heading 抽穗—成熟 Heading to maturity 茎鞘 Stem- sheath 叶片 Leaf 茎鞘 Stem- sheath 叶片 Leaf 产量 Yield 0.88** 0.99** 0.99** 0.83** 0.79** -0.74** 0.72** 0.82** 0.73** 0.98** 有效穗数 Panicles 0.91** 0.98** 0.98** 0.90** 0.70** -0.66** 0.64** 0.73** 0.70** 0.95** 穗粒数 No. of spikelets per panicle 0.65** 0.77** 0.77** 0.41 0.94** -0.93** 0.78** 0.89** 0.66** 0.85** 结实率 Grain filling percentage -0.45 -0.33 -0.39 -0.14 -0.56* 0.71** -0.29 -0.43 -0.23 -0.41 千粒重 1000-grain weight -0.57* -0.57* -0.60* -0.88** 0.03 -0.05 -0.57* -0.15 -0.25 -0.46 单穗重 Panicle weight 0.33 0.60* 0.53* 0.13 0.86** -0.72** 0.60* 0.82** 0.65** 0.68**