不同氮肥用量对沙土地糯玉米生长与产量的影响

The influence of different nitrogen application on the growth and yield of waxy maize on sandy soil

研究不同氮肥用量对沙土地糯玉米生长与产量的影响,结果表明:在施用P2O510 kg/667 m2和K2O 8 kg/667 m2的基础上,随着氮肥用量的增加糯玉米产量增加,当施氮量达到一定量时,随着施氮量增加产量不再增加,以30 kg/667 m2为宜,糯玉米获得最高产量645.93 kg/667 m2.氮肥用量在30 kg/667 m2左右时,施肥措施得当(适当深施、结合灌水、适期施肥)就可以满足糯玉米对氮的需求,获得较高产量.

Sandy soil in the irrigation area of Ningxia are experimentally studied with the influence of different nitrogen fertilizer on waxy maize growth and yield, the results show that： on the basis of applying P20s l0 kg/667 m2 and K20 8 kg/667 m2 ,waxy maize yield increased with the increase of nitrogen fertilizer, when nitrogen application rate reaches a certain amount, production no longer increases with the increase of nitrogen application, with 30 kg / 667 m2 advisable, waxy maize to obtain the maximum yield of 645.93 kg / 667 m2. So nitrogen fertilizer in 30 kg/667 m2 around, proper fertilization measures （appropriate depth, and combined with water, and optimum fertilization） can meet the needs of waxy maize for nitrogen, a higher yield.