【摘要】 分析了不同肥料运筹方式对杂交籼稻茎蘖动态、穗粒结构、养分吸收及肥料效应的影响,探讨了在高产栽培条件下的施肥指标,百公斤稻谷需N 1.83~1.98 kg,无氮基础产量百公斤稻谷需N 1.11 kg,氮肥利用率36.6~48.0%,氮肥基肥、蘖肥和穗肥的最佳比例40%、20%和40%,应用修正后的stanford公式实现杂交籼稻精确定量施肥。更多还原

【Abstract】 In this paper,it analyzed the effects of different Fertilizer Strategies on tiller dynamic,panicle- grain structure,nutrients uptake and fertilizer response of hybrid indica rice. Under high yield cultivation conditions,100 kilograms of rice needed N 1. 83kg to1. 98kg. Under nitrogen- free conditions,100 kilograms of rice needed 1. 11kg with utilization rate of nitrogen is 36. 6% to 48. 0%.The optimal proportion of basic,tillering,and panicle of nitrogen fertilizer ratio were 40%,20% and 40%. Applying revised stranford formula on hybrid indica rice to achieve fertilization with precise fixed quantity.更多还原