不同肥料分配方式下高产夏玉米氮、磷、钾吸收、积累与分配的研究

本文设置不同肥料分配方式处理，研究了高产夏玉米氮、磷、钾吸收、积累和分配的变化情况，对肥料分配方式进行了探讨。在氮、磷、钾累进吸收量上，不同处理间存在显著差异（t＝0.05），前重高于前轻，主要表现在吐丝期以前；氮、磷、钾的阶段吸收量和吸收强度，前重高于前轻，但各阶段吸收养分的相对比例和变化动态基本不受肥料分配方式的影响。本研究认为，夏玉米每公顷11250公斤产量以上水平，施肥宜采用前重方式。

Studies on The Absorption,Accumulation and partition of Nitrogen,Phosphrous and Potassium under Different Distribution Style of Fertilizer by High Yield Summer-sown Corn

This paper dealed with the effect of different distribution style of fertilizer on uptake,accumulation and partition of N,P,K by high yield summersown corn,and probed into distribution style of fertilizer.Differences in amounts of N,P,K accumulation between treatments were significant (t to 0.05 level).The amounts of N,P,K accumulation of the treatment which 85 perccent fertilizer was applied before 12-leaf(85PFT)were more than that of the one which 65 percent fertilizer was applied before 12-leaf(65PFT),especialy before silking.The amounts of nutrient stage uptake and uptake rate of 85PFT were more than those of 65PFT,and affected by distribution style of fertilizer.It was suggested suggested that the method of fertilizer application should adopt 85PFT style.