不同施氮量和追氮时期对强筋小麦产量和粗蛋白的影响

Effects of Different Nitrogen Application Rate and Nitrogen Topdressing Stage on Yield and Contents of Crude Protein in Strong Gluten Wheat

在高产条件下,不同施氮量和施氮时期对强筋小麦的产量和粗蛋白含量的影响极显著。施氮量为15 kg/667m2,底肥和追肥各50%效果最佳;追施氮肥时期后移至孕穗期,方式以拔节期追施40%N+孕穗期追施10%N效果最好。此组合强筋小麦的产量为499.4 kg/667m2,粗蛋白含量为15.40%。

Field test in 2004--2005 showed that under high soil fertility, the effect of the nitrogen application rate and different stage of topdressing nitrogen was extremely notable on the yield and contents of crude protein of strong gluten wheat. It was the best that the nitrogen fertilizer application was 15 kg/667m^2, both contents of base fertilizer and topdressing were half. The stage of nitrogen topdressing was put off till booting stage,and the method of nitrogen topdressing fertilizer was jointing stage 40% N ＋ booting stage 10%N, the yield was 499.4 kg/667m^2 and contents of crude protein was 15.40% of strong gluten wheat under this condition.