贵州省中低产稻田水稻专用肥配方筛选

Selection of Specific Fertilizer Formula for Rice Planted in Paddy Field with Middle and Low Production in Guizhou

为筛选适宜贵州省中低产稻田的水稻专用肥配方,降低氮肥用量,提高氮肥利用率,以杂交水稻中优85和中优177为试验材料,贵州省中低产稻田面积最大的黄泥田为研究对象,进行水稻配方施肥试验。结果表明:在有效钾较缺乏的中产黄泥田,施用配方肥3(N∶P2O5∶K2O=10∶8∶9)或配方肥5(N∶P2O5∶K2O=10∶7∶9)60kg/667m2,种植杂交稻产量达600kg/667m2以上;从提高肥料利用效率方面考虑,该配方仍可适当调整,氮磷钾配比调整为N∶P2O5∶K2O=10∶8∶10。

Hybrid rice varieties of Zhongyou 85 and Zhongyou 177 planted in yellow mud paddy field with middle and low production were applied with different specific fertilizer formula to screen the suitable specific fertilizer formula for rice planted in paddy field with middle and low production,and reduce nitrogen application amount for improving nitrogen utilization rate.The results showed that the yield of hybrid rice varieties planted in yellow mud paddy field with middle and low production could reach above 600kg/667m2 by applying 60kg/667m^2 specific fertilizer formula with 10 N∶8 P2O5∶9 K2O or 60kg/667m^2 with 10 N∶7 P2O5∶9 K2O.The ratio of N∶P2O5∶K2O can be adjusted to 10∶8∶10 for improving fertilizer utilization rate.