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在关中川道灌区以强筋小麦陕253为材料,研究了不同NPK配置对其不同生育期生物产量、群体数量和产量的效应,结果表明提高施肥量可显著增加生物产量、群体数量及产量,处理平均值分别比常规处理增加11.9%~43.6%、4.1%~17.4%和8.3%,其最佳N、P、K配置依次为N135kg hm-2,P2O5和K2O各120kg hm-2、N135kg hm-2,P2O5225kghm-2,K2O120kg hm-2和N225kg hm-2,P2O5和K2O各120kg hm-2。在目前常规投肥水平下适度增加钾肥有利于生物产量的显著提高,增加磷肥和钾肥有利于群体数量的提高,增施氮钾肥有显著的增产效果。产量的最佳NPK配比较常规处理增产19.1%,其增加养分的平均产量4.44 kg kg-1,比各处理平均养分产量高1.6倍。
In the Guanzhong River irrigation area, the gluten wheat wheat 253 was used to study the effects of different NPK allocation on the biomass, population and yield at different growth stages. The results showed that increasing the fertilization rate could significantly increase the biological yield, population and yield, The average values of N, P and K were increased by 11.9% -43.6%, 4.1% -17.4% and 8.3%, respectively, compared with conventional treatments. The best N, P and K configurations were N135kg hm-2, P2O5 and K2O 120kg hm- -2, P2O5225kghm-2, K2O120kg hm-2 and N225kg hm-2, P2O5 and K2O each 120kg hm-2. In the current conventional fertilization level, moderate increase of potassium fertilizer is conducive to significant increase of biological yield, increase of phosphate fertilizer and potassium fertilizer is conducive to the improvement of population quantity, increase of nitrogen and potassium fertilizers have significant yield increase. The best yield of NPK increased by 19.1% compared with the conventional treatment, and the average yield of added nutrients was 4.44 kg kg-1, which was 1.6 times higher than the average nutrient yield of all treatments.