杂交香稻泸优明占产量与稻米品质的密度、氮肥、钾肥选优模型的建立

摘要

运用最优设计，对杂交香稻泸优明占进行插植密度、施 K量、施 N量3项栽培措施的研究。通过建立产量和稻米品质与3项栽培措施的回归模型，分析3项栽培措施对产量和稻米品质的影响，结果表明，这3项措施对产量和稻米品质都有不同程度影响。并经计算机模拟筛选出高产、低垩白粒率的优化措施：平均21.45万丛/hm2，施 K2O 140.2 kg/hm2，施纯N 136.6 kg/hm2。%Effects of transplanting density, nitrogen (N) application quantity and potas-sium (K) application quantity on hybrid rice "Luyoumingzhan" were studied by opti-mal design. Regression models between yield, quality and the three cultivation measures were built to study the effects of the three cultivation measures on rice yield and quality. The results showed that the yield and quality were influenced in various degrees. An optimization measure for high yield and low chalky ratio was simulated by computer,which was 214500 clumps per ha, 140.2 kg N per ha and N 136.6 kg per ha.