中文摘要：

2002-2004年的田间小区试验结果表明，冷型小麦的产量构成因素与暖型小麦无显著差异，但施肥后，冷型小麦的有效穗数、穗粒数、千粒重、单茎粒重和产量的增加幅度均大于暖型小麦，如冷型小麦小偃6号、陕229和RB6的产量增加幅度分别为38．2％、31．6％和40．0％，而暖型小麦NR9405和9430的产量增加幅度分别为9．3％和27．3％。在供肥条件下，暖型小麦的库源矛盾比冷型小麦突出。冷型小麦的肥料农学效率比暖型小麦高，前者分别为7．45、5．94和8．56kg／kg，后者分别为1．52和5．19kg／kg；冷型小麦对肥料有较大的响应度，施肥后增产效果显著。供试土壤中氮肥的农学效率显著高于磷肥，应优先施用氮肥。

英文摘要：

The field experiments were conducted from 2002 to 2004 at the Agricultural Experimental Station of Northwest A＆F University, Yangling, Shaanxi Province, China. The genotypes （XY6, S229 and RB6） with lower canopy temperature were named as cold type wheat （CTW） and those （NR9405 and 9430） with higher canopy temperature were named as warm type wheat （WTW）. Each genotype was treated with four fertilization modes： CK （no fertilizer）, P fertilization （176.25 kg P2O5/hm^2）, N fertilization （237.0 kg N/hm^2）, and NP fertilization （176.25 kg P2O5/hm^2 ＋ 237.0 kg N/hm^2）. The results showed that under no fertilizer condition, there was no significant difference between the yield components of CTW and those of WTW, but under fertilization conditions, the increase rate of effective ears per unit area, grain number per ear, 1000 - grains weight and yields of CTW were all higher than those of WTW; The CTW genotypes presented a more considerable response to fertilization than the WTW genotypes, and the yield of CTW genotypes was increased significantly by fertilization; The agronomic use efficiency of N was significantly higher than that of P.