论文部分内容阅读
通过对内蒙古后山地区１０年９３项试验进行分析，研究结果表明，１．每公斤氮素增产小麦５．２５～７．４８ｋｇ，平均为６．９６ｋｇ，每公斤Ｐ２Ｏ５增产小麦５．５４～８．５１ｋｇ，平均为７．３ｋｇ，且肥效与地力产量呈抛物线相关。２．可根据地力产量确定氮磷化肥施用量。３．氮肥的适宜施用方法是秋深施，秋施尿素和碳铵等量等效。４．同一块田，连续施用氮磷化肥仍有较好效果，钾肥和有机肥在麦茬上施用效果较差。５．适期早播、合理密植、增施氮磷化肥是小麦增产的重要措施。
By analyzing 93 experiments in 10 years in Houshan area of Inner Mongolia, the results show that: 1. The yield of nitrogen increased from 5.25 kg / kg to 7.48 kg / kg, with an average of 6.96 kg / kg. The yield of P2O5 per kg was 5.54-8.51 kg with an average of 7.3 kg. The yield and productivity were parabola-related. 2. According to the output of nitrogen and phosphorus fertilizer to determine the amount. 3. Appropriate application of nitrogen fertilizer is autumn Shen Shi, autumn urea and ammonium bicarbonate equal equivalent. 4. The same field, continuous application of nitrogen and phosphorus fertilizers are still better results, potassium and organic fertilizer on wheat stubble application less effective. 5. Early sowing date, reasonable and close planting, adding nitrogen and phosphorus fertilizer is an important measure of wheat yield.