氮磷不同施用水平对极早熟玉米产量影响的研究

Effects of Different Application Levels of Nitrogen and Phosphorus on Yield of Extremely Early Maize

文章以早熟春玉米品种南北73为试验材料,研究了在12个氮磷用量不同施肥水平条件下,氮磷对南北73玉米品种主要农艺性状和产量的影响。研究表明:玉米品种南北73的产量和主要农艺性状受氮磷肥施用量的不同影响较大,两种肥料的施用量掌握在一定合理范围内N、P二种肥料均能显著提高玉米产量,二者作用大小为N>P,氮肥是玉米增产的主导营养元素。

The effects of nitrogen and phosphorus on main agronomic traits and yield of early-maturing spring maize variety Nanbei 73 were studied under 12 different nitrogen and phosphorus application levels.The results showed that the yield and main agronomic traits of maize cultivar Nanbei 73 were greatly affected by the different application rates of N and P fertilizer,and the application rates of N and P fertilizer were controlled within a reasonable range.The effect of N and P fertilizer on maize yield was N>P,and nitrogen fertilizer was the dominant nutrient element for maize yield increase.