旱作地区氮素化肥施肥技术的试验初报

Technique of nitrogenous fertilizer application in dryland

旱作区在等氮量条件下，氮素化肥采取春季一次性侧基施试验证明，侧基施比追施氮素化肥的玉米在营养生长和生殖生长时期旺盛、抗旱、增产，可提高氮素化肥的利用率。氮肥通过春季一次性基施，能充分利用天上降水和土壤中水分，调节或缓解作物需肥、施肥与降水时间、多少之间的矛盾，提早或较及时供给作物对氮素的吸收。

In the condition of equal amount of nitrogen in dry area, with the method of applying all essential nitrogenous fertilizer on the side base of corn once in spring, corn grew luxuriantly, behaved droughtresistantandyieldedmoreproductcompared with usual topdressing in both vegetative stage and reproductive stage. The utilization ratio of nitrogenous fertilizer was raised Using the new technique fertilizer of application corn could utilize rainfall and water in soil more efficiently, the contradictions among requiring fertilizer, applying fertilizer, the time and amount of rainfall were regulated or relaxed, the necessary nitrogenous fertilizer for corn growing and developing could be supplied in time.