【摘要】 田间和温室试验表明：在供试揭土上，氨、磷肥对陕354小麦具有明显的增产作用，增产效应为氮＞钾＞磷，初步发现钾肥有明显增产效应。此外，硫肥有增产作用，硫锌、硫锰或硫锌锰配施增产显著。试区小麦高产施肥中应注意中、微量元素的缺乏与补充问题．并应注意各种肥料的平衡施用。最佳施肥量为N217kg／hm．P2O599．lkg／hm和K2O107.lkg／hm．N：P2O5：K2O最佳配比为1：O．46：0.49，氮肥基、追比为1：1，追施期为拔节前和开花期，二者分配比为4：1。更多还原

【Abstract】 Both field and greenhouse experiments show that nitrogen,phosphorus, potassium fertiliz-ers all have the profoundly yield-increasing effect on wheat for tested soils in He’nan province,the magni-tude order of yield-increasing effect is as follows: N>K>P. It is discovered initially that potassium fertilizer has profoundly yield-increasing effect on wheat in experimented region. Also, sulfur zinc and m anganese fertilizers have yield-increasing on wheat. Thus, potassium fertilizer also should be applied to winter wheat variety Shaan354, together with nitrogen and phosphorus fertilizers, attention should be paid to the defi-ciencies and replenish of sulfur zinc and manganese nutrients,and to the balanced fertilization of various fertilizers. The optlmum rates of N, P2O5, and K2Oare 217. 0 kg/hm, 99. 1 kg/hm and 1O7. l kg/hm, respec-tively, and the optimum ratio of N: P2O5,: K2Oare 1:0. 46: 0. 49. The distribution ratio of base to topdress amount of N fertilizer is 1: 1, the time of top dressing is be fore stem pushing and in flowering stage of wheat, and the distribution ratio of both top dresses is 4: 1.更多还原