阿荣旗旱作丘陵区春玉米配方施肥的研究

Prescriptions of Fertilizer Application for Spring Maize in the Dry and Hilly Land in Arong Banner

春玉米是内蒙古自治区呼伦贝尔盟岭南旱作丘陵区的重要粮食作物。施肥不足,氮、磷配比不合理是该地区玉米低产的重要影响因素。1987～1989年在该地区的中部阿荣旗25个试验点上进行了测土配方施肥的研究,经统计分析,提出了不同土壤肥力条件下氮,磷效应函数;并根据碱解氮、速效磷的土测值确定最佳施肥量的推荐,为岭南旱作丘陵区春玉米丰产栽培提供了施肥依据。

Spring maize is one of important grain crops in the dry and hilly land in the Hulunbe(?)er league,Inner Mongolia.Insufficient fertilizer application and unrational proportions of N、P are main cause of low maize yield in this area. During the period of 1987～1989,the rationalization for fertilizer application were studied at 25 experimental plots in Arong Banner.The effective function of N、P was presented at different soil fertility conditions,and the most suitable amount of fertilizer application was determined on the basis of available N and P contents in soil.The results suggest a basis of fertilizer application for higher yield cultivation of spring maize in this area.