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2000年在国家紫色土肥力和肥料效益监测基地上长期定位试验小区(西南农业大学校本部农场)内,进行的不同施肥处理对稻麦养分吸收利用影响的定位试验结果表明:施N肥能提高稻麦子粒含N量,施用P肥能提高稻麦植株各部位P含量,有机肥与化肥配合施用比单施化肥处理水稻含P量高。施用K肥能提高小麦茎叶含K量,但子粒中K含量变化较小,K主要保留在茎叶中;Cl能促进小麦对K的吸收。小麦对N、P、K肥的利用率分别为27.8%、38.9%和22.9%;水稻对N、P、K肥的利用率分别为35.8%、26.8%和41.8%。水稻对N肥和K肥的利用率高于小麦,而小麦对P肥的利用率则高于水稻。
In 2000, the experiment on the effects of different fertilization treatments on the nutrient uptake and utilization of rice and wheat in the long-term experimental plot (Southwest Agricultural University School-based Farm) on the national purple soil fertility and fertilizer benefit monitoring base showed that the application of N fertilizer could be improved The content of N in rice and wheat grains increased P content in different parts of rice and wheat plants by applying P fertilizer. Application of K fertilizer can improve the K content of wheat stems and leaves, but K content in the kernel changes little, K mainly retained in the stems and leaves; Cl can promote wheat K absorption. The utilization rates of N, P and K in wheat were 27.8%, 38.9% and 22.9% respectively. The utilization rates of N, P and K in rice were 35.8%, 26.8% and 41.8% respectively. Rice utilization of N and K fertilizer was higher than that of wheat, while wheat utilization of P fertilizer was higher than that of rice.