沙地玉米施肥技术研究  

Research of fertilization technique for maize in sandy soil

作　　者：龚玉琴[1] 白锦红 马晓红[1] 王梅琴[1] 

机构地区：[1]银川市农业技术推广服务中心,宁夏银川750004

出　　处：《农业科学研究》2008年第3期17-19,22,共4页Journal of Agricultural Sciences

基　　金：农业部"测土配方施肥补贴项目"

摘　　要：试验研究了宁夏灌区沙土地氮、磷、钾肥配施,氮肥最佳用量、最佳施用时期及比例对玉米产量的影响.结果表明,试验全肥区玉米产量与缺磷区、缺钾区没有明显差别.氮肥是限制产量的第一要素,氮肥施用量以315 kg/hm2为宜.沙土地玉米氮肥以2次施用,其中50%基施、50%于6月中下旬追施效果最好.The influences of the combination of nitrogen, phosphorus and potassium, optimal dosage and time and proportion of nitrogen on maize yield in sandy soil in Ningxia irrigation region were researched. The results showed that the maize yield with whole fertilizers had no differences compared with that deficient of phosphorus and potassium. Nitrogen was the key factor in controlling yield. The applying amount of nitrogen fertilizer was suitable for 315 kg/hm2 for two times in sandy soil. 50% was applied as basic fertilizer and other 50% was applied as topdressing fertilizer during the later half of June.

关 键 词：玉米 沙土地 施肥技术 

分 类 号：S147.3[农业科学—肥料学]