阴湿山区磷肥施用量对玉米产量的影响

研究了阴湿山区磷肥不同施用量对玉米产量的影响。结果表明,磷肥不同施用量对玉米株高、穗长、百粒重影响不大,对果穗的秃尖影响较大,不施磷秃尖明显加大,从而影响玉米的穗粒数;对玉米产量有较大影响,当施磷量达到135.0 kg/hm2时,产量最高,为6 935.2 kg/hm2。

Effects of Phosphorus Application Rates on Maize Yield in Wet Mountainous Area

A Study on the effect of different application rates of phosphorus fertilizer on the maize yield was made and the result showed that the application rates of phosphorus fertilizer had little effects on the maize plant height, ear length and 100 grain weight and had greater effect on the ear barren tip. The ear barren tip was obviously larger without fertilizing phosphorus and grain number per ear and the yield of maize were affected. When the application rates of phosphorus fertilizer reached 135.0 kg/hm^2, the yield was highest, namely 6 935.2 kg/hm^2.