玉米氮肥和磷肥总量控制试验研究

摘要

Objective] The alm was to provide scientific references for determination of optimal N and P quantities of malze. [Method] The research conducted a test in field to expIore the effects of N and P fertiIizers on malze yield. [Result] Both of N and P fertiIizers have significant effects on malze yield. When malze yield reached the highest, the quantities of N fertiIizers and P fertiIizers were 530.56 and 105.44 kg/hm2, respectiveIy. [Conclusion] Malze yield keeps growing upon N or P fertiIizers to certaln extent, and excessive quantities of N and P fertiIizer wouId reduce malze yield.%[目的]为确定玉米合理的氮肥和磷肥的适宜用量提供科学依据。[方法]采用田间试验，研究了氮肥和磷肥施用量对玉米产量的影响。[结果]氮肥和磷肥的施用量对玉米产量的影响均达显著水平，玉米产量达到最高时氮肥施用量为530.56 kg/hm2，磷肥施用量为105.44 kg/hm2。[结论]玉米的产量在一定范围内随着氮、磷肥施用量的增加而增加，过量地施用氮、磷肥会造成玉米的产量降低。